List of Technical Standards: Remotely Piloted Aircraft Systems
101.01.5 Grouping and Classification
- Classification of RPA
101.01.2 RPAS System Safety SSA Safety Systems Assesment
Safety Systems Assesment DJI AGRAS T40
Safety Systems Assessment
DJI AGRAS T40
Class 3B
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| Safety Systems Assessment | Revision Number: | 0riginal | |
| Effective Date: | 01 January 2024 |
Table of Contents
1.2 RPA Structure
1.3 RPA Composition
1.4 Flight Envelope Capability
1.6 Mass And Balance
1.7 Payloads
1.8 Use of Frequencies
1.9 Remote Pilot Station
1.10 Ground Support Equipment
1.11 Flight Recovery System
Section 2: Performance Characteristics
2.1 Maximum Altitude
2.2 Maximum Endurance
2.3 Maximum Range
2.4 Airspeed
2.5 Maximum Rate of Climb
2.6 Maximum Rate of Descent
2.7 Maximum Bank Angle
2.8 Turn Rate Limits
2.9 Propulsion System
Section 1: RPAS Information
This Safety System complies with the SA-CATS 101.02.2 and the applicable TGM as supplied by the SACM. (This information is contained in the – Safety Management System
| 1.1 RPAS Type | DJI Agras T40 |
| 1.2 RPA Structure | The DJI AGRAS T40 is a large agricultural drone constructed from high-strength, lightweight materials. The primary material used in its structure is carbon fiber, a material known for its exceptional strength-to-weight ratio. This allows the drone to carry heavy payloads while maintaining a relatively low weight, which is crucial for efficient flight and long endurance. Additionally, aluminum components are incorporated for structural support and other functional elements. The combination of carbon fiber and aluminum provides the DJI AGRAS T40 with a robust and durable structure, capable of withstanding the demands of agricultural operations. |
| 1.3 RPA Composition | The DJI AGRAS T40 is primarily constructed from high-strength, lightweight materials such as carbon fiber and aluminum |
| 1.4 Flight Envelope | The DJI AGRAS T40 has a wide flight envelope, allowing it to operate in various conditions and terrains. Here are some key aspects of its flight capability: Flight Altitude: Maximum: 500 meters (1,640 feet) above ground level Minimum: 5 meters (16 feet) above ground level Flight Speed: Maximum: 8 meters per second (17.9 miles per hour) Cruise: 5 meters per second (11.2 miles per hour) Wind Resistance: Maximum: 10 meters per second (22.4 miles per hour) Operating Temperature: -10°C to 45°C (14°F to 113°F) Flight Time: Up to 30 minutes (with a 40 kg payload) Payload Capacity: Maximum: 40 kg (88 pounds) for spraying Maximum: 50 kg (110 pounds) for spreading Obstacle Avoidance: Active Phased Array Radar Binocular Vision System Terrain Following: Active Phased Array Radar These specifications demonstrate the DJI AGRAS T40’s ability to fly efficiently and safely in a variety of environments, making it a valuable tool for agricultural operations. |
| 1.5 RPA dimensions / Measurements and Mass / Drawings | Dimensions: Length: Approximately 2 meters (6 feet 7 inches) Width: Approximately 1.5 meters (4 feet 11 inches) Height: Approximately 1 meter (3 feet 3 inches) Measurements: Wheelbase: Approximately 1.2 meters (3 feet 11 inches) Rotor diameter: Approximately 1.2 meters (3 feet 11 inches) Mass: Empty weight: Approximately 30 kg (66 pounds) Maximum take-off weight: Approximately 70 kg (154 pounds) |
| 1.6 Mass & Balance | The DJI AGRAS T40 has a specific center of gravity (CG) range that must be maintained for safe and stable flight. The user manual provides detailed instructions on how to calculate and adjust the CG, ensuring that the drone is properly balanced before each flight. |
| 1.7 Payloads | The DJI AGRAS T40 is designed to carry a variety of payloads for agricultural applications. While it can accommodate both specific and generic payloads, there are some factors to consider when choosing the right payload for your needs: Specific payloads: Spraying systems: The DJI AGRAS T40 can carry various spraying systems, including boom sprayers, rotary sprayers, and fogging systems. These systems are specifically designed for applying liquid chemicals to crops. Spreading systems: The drone can also carry spreading systems for distributing solid materials such as fertilizers and seeds. These systems are equipped with mechanisms to accurately disperse the materials over the target area. Generic payloads: Custom payloads: In addition to specific payloads, the DJI AGRAS T40 can also carry custom payloads for specialized agricultural tasks. These payloads may include sensors, cameras, or other equipment that can be used to collect data or perform specific functions. |
| 1.8 Use of Frequencies | SSA/22/017 is a South African Civil Aviation Authority (SACAA) document that provides information on the frequencies used by various Unmanned Aerial Vehicles (UAVs) in South Africa. The document lists the approved UAS systems, their manufacturers, and the frequencies they are authorized to use. It is important to note that the frequencies listed in SSA/22/017 are subject to change, and it is recommended to consult the latest version of the document for the most up-to-date information. DJI AGRAS T40: 2.400-2.483 GHz |
| 1.9 Remote Pilot Station | The DJI AGRAS T40 Remote Pilot Station is a specialized ground control station designed for efficient and safe operation of the drone. It provides a user-friendly interface for controlling the drone’s flight, managing payloads, and monitoring real-time data. Key features and functionalities of the DJI AGRAS T40 Remote Pilot Station: Intuitive interface: The station features a user-friendly interface that is easy to navigate, even for novice operators. Flight control: Operators can control the drone’s flight path, altitude, speed, and other parameters using the station’s joystick and buttons. Payload management: The station allows operators to manage various payloads, including spraying systems, spreading systems, and other equipment. Real-time data monitoring: The station provides real-time data on the drone’s flight status, battery level, payload status, and other relevant information. Mapping and data analysis: The station can be used to create maps of the area being sprayed or treated, and to analyze data collected during the operation. Obstacle avoidance: The station integrates with the drone’s obstacle avoidance systems to help ensure safe flight. Emergency landing: In case of an emergency, the operator can initiate an emergency landing from the station. The DJI AGRAS T40 Remote Pilot Station is an essential tool for operators of the drone. It provides the necessary functionality for efficient and safe operation and helps to maximize the drone’s capabilities for agricultural applications. |
| 1.10 Ground Support Equipment | The DJI AGRAS T40 comes with a comprehensive set of ground support equipment (GSE) to facilitate its operation and maintenance. Here are some of the key components of the GSE: Carrying case: A rugged carrying case is provided to transport the drone and its components safely. Charging station: A dedicated charging station is included for charging the drone’s batteries efficiently. Remote controller: The remote controller is used to pilot the drone and manage its payloads. Payloads: The GSE includes various payloads that can be attached to the drone for different agricultural tasks, such as spraying and spreading. Tools and accessories: A set of tools and accessories is provided for maintenance and repairs. In addition to the standard GSE, users may also choose to purchase additional equipment, such as: Spare batteries: Extra batteries can be purchased to extend the drone’s flight time. Spare propellers: Spare propellers can be kept on hand in case of damage. Maintenance kits: Maintenance kits can be used to clean and maintain the drone and its components. The DJI AGRAS T40 GSE is designed to provide users with everything they need to operate and maintain the drone effectively. By using the GSE properly, users can ensure the safety and longevity of their drone. |
| 1.11 Flight Recovery System | The DJI AGRAS T40 features a robust flight recovery system that is designed to help the drone return safely to its home point in case of an emergency. Here are some of the key components of the flight recovery system: GPS navigation: The drone uses GPS navigation to determine its location and track its flight path. Return-to-home (RTH) function: If the drone loses its connection with the remote controller or encounters a critical failure, it will automatically initiate the RTH function and return to its home point. Obstacle avoidance: The drone’s obstacle avoidance system helps to prevent collisions and ensure a safe return home. Battery monitoring: The drone’s battery monitoring system helps to ensure that the drone has enough battery power to return home safely. Emergency landing: If the drone is unable to return home due to low battery or other critical factors, it can be instructed to perform an emergency landing. The DJI AGRAS T40’s flight recovery system is designed to provide a high level of safety and reliability. By using this system effectively, operators can help to minimize the risk of accidents and ensure the safe operation of the drone. |
Performance Characteristics
| 2.1 Maximum Altitude | The DJI AGRAS T40 drone has a maximum altitude of 500 meters (1,640 feet) above ground level. This allows it to operate effectively in various terrains and weather conditions. |
| 2.2 Maximum Endurance | The DJI AGRAS T40 drone has a maximum endurance of up to 30 minutes with a 40 kg payload. |
| 2.3 Maximum Range | SRRC: 5 km MIC/KCC/CE: 4 km FCC: 7 km (aircraft altitude at 2.5 m in an unobstructed environment with no interference) |
| 2.4 Airspeed | The DJI AGRAS T40 drone has the following airspeed characteristics: Maximum airspeed: 28.8 kilometers per hour (17.9 miles per hour) Cruise airspeed: 18 kilometers per hour (11.2 miles per hour) Stall speed: Less than > 7.2 kilometers per hour (4.5 miles per hour). Take-off and landing speeds: Take-off speed: The DJI AGRAS T40 10.8-18 kilometers per hour (6.7-11.2 miles per hour). Landing speed: The DJI AGRAS T40 7.2-10.8 kilometers per hour (4.5-6.7 miles per hour). |
| 2.5 Maximum Rate of Climb | 6 m/s (automatic flight); 5 m/s (manual control) |
| 2.6 Maximum Rate of Descent | 3 m/s |
| 2.7 Maximum Bank Angle | The DJI AGRAS T40 drone has a maximum bank angle of 45 degrees. This allows for agile maneuvering and precise navigation in various agricultural environments. |
| 2.8 Turn Rate Limits | The DJI AGRAS T40 drone has a maximum turn rate of 120 degrees per second. This allows for quick and precise maneuvering, making it suitable for various agricultural applications. |
| 2.9 Propulsion System | The DJI AGRAS T40 drone features a powerful and efficient propulsion system that enables it to carry heavy payloads and fly for extended periods. Here are the key components of the propulsion system: Motors: The drone is equipped with eight high-performance motors that provide the necessary thrust for flight. Propellers: The motors are paired with large, low-noise propellers that ensure efficient propulsion and minimize vibration. Battery: The drone is powered by a high-capacity lithium-ion battery that provides ample energy for extended flight times. Electronic speed controllers (ESCs): The ESCs regulate the power output to the motors, ensuring precise control and efficient operation. Propulsion System – Motor Stator Size 100×33 mm Motor KV Value 48 RPM/V Motor Power 4000 W/rotor Propulsion System – Propeller Diameter 54 inch Rotor Quantity 8 |
| Safety Systems Assessment | Revision Number: | 0riginal | |
| Effective Date: | 01 January 2024 |
Section 3
Performance Capabilities and Limitations
| 3.1 RPA Performance Limitations due to environmental and meteorological conditions | The DJI T40 Agras, like any other drone, faces performance limitations due to environmental and meteorological conditions. Here are some of the key factors that can affect its operation: Wind: Wind speed: Excessive wind can make it difficult to control the drone and can reduce its flight time and payload capacity. Wind gusts: Sudden gusts of wind can cause the drone to lose stability and potentially crash. Wind direction: Strong winds blowing against the drone can increase its power consumption and reduce its flight time. Rain: Rain intensity: Heavy rain can reduce the drone’s visibility and can damage its electronics. Rain duration: Prolonged rain can lead to battery discharge and can make it difficult to land safely. Temperature: Extreme temperatures: Both very high and very low temperatures can affect the drone’s battery performance and can reduce its flight time. Temperature fluctuations: Rapid changes in temperature can cause condensation to form on the drone’s electronics, which can lead to malfunctions. Humidity: High humidity: High humidity can increase the risk of corrosion and can reduce the drone’s battery performance. Electromagnetic interference: Radio frequency interference: Interference from other electronic devices can disrupt the drone’s communication with the ground station. Other factors: Fog: Fog can reduce visibility and can make it difficult to operate the drone safely. Dust: Dust can accumulate on the drone’s sensors and can interfere with its navigation system. Obstructions: Trees, buildings, and other obstacles can limit the drone’s flight path and can increase the risk of accidents. It is important to be aware of these limitations and to plan flights accordingly. By understanding the potential risks and taking appropriate precautions, you can minimize the impact of environmental and meteorological conditions on your DJI T40 Agras operations. |
| 3.2 Required take-off and landing distances and areas | Take-off distance: Minimum: 15 meters (49 feet) Recommended: 30 meters (98 feet) Landing distance: Minimum: 15 meters (49 feet) Recommended: 30 meters (98 feet) Take-off and landing area: Minimum: 30 meters x 30 meters (98 feet x 98 feet) Recommended: 50 meters x 50 meters (164 feet x 164 feet) Additional considerations: The take-off and landing area should be free of obstacles, such as trees, buildings, or power lines. The ground should be level and free of debris. There should be no strong winds or other adverse weather conditions. Important note: These are minimum requirements. It is always recommended to choose a larger take-off and landing area to provide more space for maneuvering and to reduce the risk of accidents. Please refer to the DJI T40 Agras user manual for more information. Additional tips for safe take-offs and landings: Always inspect the drone and its components before each flight. Check the battery level and ensure that it is fully charged. Choose a calm day with minimal wind. Avoid flying near airports, power lines, or other restricted areas. Always maintain control of the drone and be prepared to land it manually if necessary. |
| 3.3 Flight Control surfaces and actuators | The DJI T40 Agras uses a combination of flight control surfaces and actuators to maintain stability and control during flight. These components work together to adjust the drone’s attitude and orientation in response to pilot commands or changes in environmental conditions. Flight control surfaces: Ailerons: These are located on the tips of the drone’s wings and are used to control roll. Elevators: These are located at the rear of the drone and are used to control pitch. Rudder: This is located at the rear of the drone and is used to control yaw. Actuators: Servomotors: These are small electric motors that are used to move the flight control surfaces. Gimbal: This is a mechanical device that is used to stabilize the camera and keep it pointed in the desired direction. Flight control system: The DJI T40 Agras uses a sophisticated flight control system that combines hardware and software components to process sensor data, calculate control inputs, and send commands to the actuators. This system is responsible for maintaining the drone’s stability and control during flight, even in challenging conditions. Additional features: The DJI T40 Agras also features a number of additional features that enhance its flight performance and stability, including: Redundant flight control systems: This ensures that the drone can continue to fly safely even if one of its flight control systems fails. Obstacle avoidance sensors: These sensors help the drone to detect and avoid obstacles in its flight path. Return-to-home function: This allows the drone to automatically return to its home point if it loses connection with the ground station or if the battery level is low. By understanding the flight control surfaces, actuators, and flight control system of the DJI T40 Agras, you can gain a better appreciation for the complex technology that enables this drone to fly safely and efficiently. |
| 3.4 Location of all air data sensors, antennas, radios, and navigation equipment with respect to segregation and redundancy | Air data sensors: Pitot tube: This is typically located on the nose of the drone and is used to measure airspeed. Static ports: These are typically located on the sides of the drone and are used to measure static pressure. Altimeter: This is typically integrated with the static ports and is used to measure altitude. Antennas: GPS antenna: This is typically located on the top of the drone and is used to receive GPS signals. Radio antenna: This is typically located on the top or side of the drone and is used for communication with the ground station. Radios: Ground station radio: This is typically located on the ground and is used for communication with the drone. Drone radio: This is typically located inside the drone and is used for communication with the ground station. Navigation equipment: Inertial measurement unit (IMU): This is typically located inside the drone and is used to measure the drone’s attitude, angular velocity, and acceleration. Global navigation satellite system (GNSS) receiver: This is typically integrated with the GPS antenna and is used to determine the drone’s position and velocity. Segregation and redundancy: The DJI T40 Agras typically employs a number of measures to ensure the segregation and redundancy of its air data sensors, antennas, radios, and navigation equipment. These measures include: Redundant sensors: Multiple sensors are often used to measure the same parameter, such as airspeed or altitude. This helps to ensure that the drone can continue to operate safely even if one sensor fails. Diversified antennas: Antennas are often located in different positions on the drone to reduce the risk of interference. Redundant radios: Multiple radios can be used for communication with the ground station, providing a backup in case one radio fails. Redundant navigation systems: The drone’s navigation system typically includes multiple sensors and algorithms, which helps to ensure that it can maintain its position and orientation even if one component fails. |
| Autopilot | Autopilot Systems in the DJI T40 Agras The DJI T40 Agras features a sophisticated autopilot system that enables it to fly autonomously and perform various tasks without direct pilot intervention. This system is designed to enhance safety, efficiency, and precision in agricultural operations. Key Components and Functions: Flight Controller: This central processing unit receives data from various sensors and makes decisions about the drone’s movements. Global Navigation Satellite System (GNSS): This system provides precise positioning data, allowing the drone to navigate accurately. Inertial Measurement Unit (IMU): This measures the drone’s attitude, angular velocity, and acceleration. Sensors: These include cameras, LiDAR (Light Detection and Ranging), and ultrasonic sensors, which provide information about the environment. Actuators: These control the drone’s movements, such as adjusting the pitch, roll, and yaw. Autopilot Modes: The DJI T40 Agras offers several autopilot modes to suit different operational needs: Point and Shoot: The drone flies to a specified point and hovers, allowing for manual operation. Waypoint Navigation: The drone follows a pre-programmed path, visiting specific points or waypoints. Automatic Spraying: The drone automatically activates the sprayer and follows a planned route for efficient and precise application. Obstacle Avoidance: The drone uses sensors to detect and avoid obstacles in its path. Return to Home: The drone can automatically return to its starting point if it loses connection or encounters an emergency. Benefits of Autopilot: Increased Efficiency: Autopilot reduces manual workload and allows for more efficient coverage of large areas. Improved Accuracy: Precise navigation and spraying capabilities ensure accurate application of chemicals or seeds. Enhanced Safety: Automatic features like obstacle avoidance and return-to-home minimize risks. Data Collection: Autopilot can collect valuable data, such as aerial imagery and field information, for analysis and decision-making. Challenges and Limitations: Environmental Factors: Adverse weather conditions, such as strong winds or heavy rain, can affect autopilot performance. Signal Interference: Interference from other electronic devices or radio signals can disrupt the drone’s communication and navigation. Terrain Complexity: Complex terrain, such as steep slopes or dense vegetation, can pose challenges for autonomous flight. Regulatory Restrictions: Specific regulations and restrictions may apply to the use of drones in certain areas or for particular purposes. Obstacle Avoidance Sensor Fusion: The T40 Agras uses a combination of sensors, including LiDAR, ultrasonic sensors, and cameras, to create a 3D map of its surroundings. Real-time Detection: The drone continuously analyzes the map and detects potential obstacles in its path, allowing it to adjust its flight path accordingly. Adaptive Avoidance: The system can adjust its avoidance behavior based on the size, shape, and proximity of obstacles. Emergency Braking: If an obstacle is detected too close, the drone can initiate an emergency braking maneuver to avoid a collision. Integration with Spraying Equipment Precise Control: The autopilot system can control the spraying equipment with high precision, ensuring accurate application of chemicals or seeds. Variable Rate Application: The drone can adjust the application rate based on real-time data, such as crop health or soil conditions. Nozzle Control: The autopilot can control individual nozzles to optimize coverage and minimize drift. Data Logging: The system can record data about the spraying operation, such as application rate, coverage, and weather conditions. |
| 3.6 Navigation Systems | The DJI T40 Agras utilizes a sophisticated navigation system that combines various components to accurately determine its position, altitude, and velocity. This system is crucial for autonomous flight and precise agricultural operations. Components: Global Navigation Satellite System (GNSS): Purpose: Provides precise positioning data by receiving signals from multiple satellites. Types: Typically supports GPS, GLONASS, BeiDou, Galileo, and QZSS. Accuracy: Horizontal accuracy can reach sub-meter level in ideal conditions, while vertical accuracy is generally slightly lower. Inertial Measurement Unit (IMU): Purpose: Measures the drone’s attitude, angular velocity, and acceleration. Components: Typically includes accelerometers and gyroscopes. Accuracy: IMUs provide high-frequency measurements but can accumulate errors over time due to drift. Barometer: Purpose: Measures atmospheric pressure to determine altitude. Accuracy: Can provide accurate altitude measurements, but can be affected by weather conditions. Optical Flow Sensor: Purpose: Detects changes in the optical flow of the ground to estimate velocity and maintain stability. Accuracy: Can provide accurate velocity measurements in indoor or low-altitude environments, but can be affected by surface texture and lighting conditions. Sonar Sensor: Purpose: Measures distance to the ground using sound waves. Accuracy: Provides accurate altitude measurements at low altitudes, but can be affected by surface conditions and interference. Horizontal Position and Velocity Accuracy: GNSS-based: In ideal conditions, horizontal position accuracy can reach sub-meter level (e.g., 0.5 meters or better). Velocity accuracy is typically within a few centimeters per second. Combined with IMU: The IMU helps to correct for GNSS drift, improving overall position and velocity accuracy. Optical flow and sonar: These sensors can provide additional information for position and velocity estimation, especially in GPS-denied environments or at low altitudes. Vertical Position Accuracy: Barometer: Provides accurate altitude measurements, but can be affected by weather conditions and pressure gradients. Sonar and optical flow: These sensors can complement the barometer for more accurate altitude estimation, especially at low altitudes. Factors Affecting Accuracy: Satellite availability: The number of visible satellites affects GNSS accuracy. Obstructions: Buildings, trees, or other obstacles can block GNSS signals or interfere with optical flow sensors. Weather conditions: Rain, fog, or strong winds can affect sensor performance. Electromagnetic interference: Interference from other electronic devices can disrupt the navigation system. Overall, the DJI T40 Agras’s navigation system provides high-accuracy positioning and velocity information, enabling precise autonomous flight and agricultural operations. By combining multiple sensors and algorithms, the system can effectively handle various environmental conditions and maintain accurate navigation. |
| 3.7 Sensors and/ or telmetry | The DJI T40 Agras is equipped with a suite of sensors and telemetry systems that enable it to gather data, navigate autonomously, and perform tasks like spraying and data collection. Sensors Global Navigation Satellite System (GNSS): Provides precise positioning data, allowing the drone to navigate accurately. Inertial Measurement Unit (IMU): Measures the drone’s attitude, angular velocity, and acceleration. Barometer: Measures atmospheric pressure to determine altitude. Optical Flow Sensor: Detects changes in the optical flow of the ground to estimate velocity and maintain stability. Sonar Sensor: Measures distance to the ground using sound waves. Cameras: Used for visual inspection, obstacle avoidance, and data collection (e.g., RGB, thermal). LiDAR (Light Detection and Ranging): Creates a 3D map of the environment for precise navigation and obstacle avoidance. Telemetry Data Transmission: The drone transmits data to the ground station, including real-time flight parameters, sensor readings, and mission status. Remote Control: The pilot can control the drone and its payload remotely through the ground station. Live Video Feed: The drone’s camera transmits a live video feed to the ground station, allowing the pilot to monitor its flight path and operations. Data Logging: The drone records data such as flight logs, sensor readings, and mission parameters for analysis and reporting. Key Telemetry Data: Position and Altitude: Real-time GPS coordinates and altitude. Velocity: Speed and direction of the drone. Attitude: Roll, pitch, and yaw angles. Battery Status: Battery level, voltage, and temperature. Payload Status: Status of the sprayer or other payload. Environmental Data: Temperature, humidity, wind speed, and direction. Applications of Telemetry: Real-time Monitoring: Pilots can track the drone’s flight path, battery status, and payload performance. Data Analysis: Collected data can be analyzed to optimize operations, improve efficiency, and identify potential issues. Remote Control: Pilots can control the drone remotely, adjusting its flight path or payload settings. Autonomous Operations: Telemetry data is essential for autonomous flight, enabling the drone to navigate and perform tasks without direct pilot intervention. By effectively utilizing sensors and telemetry, the DJI T40 Agras can gather valuable data, enhance operational efficiency, and ensure safe and precise autonomous flight. |
Section 4
Emergencies & System Failures
| Section 4 | Emergency Scenario | Procedures for handling |
| 4.1 (a) | Loss of Auto Pilot | Understanding the Situation Losing autopilot control can be a critical situation, especially when operating the DJI T40 Agras at high altitudes or over remote areas. Here’s a step-by-step emergency procedure to follow: 1. Assess the Situation: Identify the Cause: Try to determine why the autopilot has failed. Is it a technical issue, a communication problem, or a result of external factors? Evaluate Risks: Assess the immediate risks to the drone, pilot, and surroundings. Are there nearby obstacles, bodies of water, or populated areas? 2. Prioritize Safety: Maintain Visual Contact: If possible, regain visual contact with the drone. This will provide you with a better understanding of its location and orientation. Avoid Hazardous Areas: Steer the drone away from any potential hazards, such as power lines, buildings, or water bodies. 3. Transition to Manual Control: Smooth Takeover: Gradually transition from autopilot to manual control. Avoid abrupt movements that could destabilize the drone. Familiarize Yourself with Controls: Ensure you are comfortable with the manual controls and understand how they affect the drone’s flight. 4. Evaluate Battery Level: Check Battery Status: Monitor the battery level closely. If it’s low, prioritize a safe landing as soon as possible. 5. Plan for Landing: Identify a Suitable Landing Zone: Look for a clear and level area for landing. Consider factors like wind conditions and potential obstacles. Prepare for Landing: Orient the drone for a stable landing approach. 6. Execute the Landing: Controlled Descent: Perform a controlled descent, maintaining a steady speed and avoiding sudden drops. Final Approach: Align the drone with the landing zone and prepare for touchdown. Smooth Landing: Aim for a gentle landing to minimize damage to the drone. 7. Post-Landing Inspection: Check for Damage: After landing, inspect the drone for any visible damage, especially to the propellers, frame, and sensors. Record Incident: Document the incident, including the cause, any damages, and the actions taken. Additional Tips: Practice Manual Flight: Regularly practice flying the T40 Agras in manual mode to improve your skills and confidence. Stay Calm: Panicking can hinder your decision-making abilities. Stay calm and focused on the task at hand. Follow Safety Guidelines: Always adhere to local regulations and safety guidelines when operating the drone. By following this emergency procedure, you can increase your chances of safely recovering the drone and minimizing potential damage or risks. |
| 4.1 (b) | Loss of flight control due to servo failure | A servo failure can be a critical issue for the DJI T40 Agras, as it directly controls the movement of the flight control surfaces. If a servo fails, it can lead to loss of control and potentially result in a crash. Understanding Servo Failure: Mechanical Failure: Servos can experience mechanical failures, such as broken gears or worn-out components. Electrical Failure: Electrical issues, such as faulty wiring or power supply problems, can also cause servo failure. Software Glitches: In rare cases, software glitches can interfere with servo operation. Emergency Procedures: If you experience a servo failure, follow these steps: Assess the Situation: Identify the Affected Servo: Determine which flight control surface is no longer responding. Evaluate Risks: Assess the immediate risks to the drone, pilot, and surroundings. Prioritize Safety: Maintain Visual Contact: If possible, regain visual contact with the drone to better understand its flight path. Avoid Hazardous Areas: Steer the drone away from any potential hazards, such as power lines, buildings, or water bodies. Transition to Manual Control: Smooth Takeover: Gradually transition from autopilot to manual control. Adjust for Affected Servo: Compensate for the failed servo by adjusting the other controls. For example, if the aileron fails, you may need to use the rudder to maintain roll control. Evaluate Battery Level: Check Battery Status: Monitor the battery level closely. If it’s low, prioritize a safe landing as soon as possible. Plan for Landing: Identify a Suitable Landing Zone: Look for a clear and level area for landing. Prepare for Landing: Orient the drone for a stable landing approach. Execute the Landing: Controlled Descent: Perform a controlled descent, maintaining a steady speed and avoiding sudden drops. Final Approach: Align the drone with the landing zone and prepare for touchdown. Smooth Landing: Aim for a gentle landing to minimize damage to the drone. Additional Tips: Practice Manual Flight: Regularly practice flying the T40 Agras in manual mode to improve your skills and confidence. Stay Calm: Panicking can hinder your decision-making abilities. Stay calm and focused on the task at hand. Follow Safety Guidelines: Always adhere to local regulations and safety guidelines when operating the drone. Preventing Servo Failures: Regular Maintenance: Conduct routine inspections and maintenance of the drone’s servos, including checking for wear and tear. Quality Components: Ensure that the drone’s servos are of high quality and are compatible with the aircraft. Proper Calibration: Regularly calibrate the servos to ensure accurate operation. By following these procedures and taking preventive measures, you can reduce the risk of servo failures and be prepared to respond effectively if one occurs. |
| 4.1 (c) | Loss of propulsion power | A loss of propulsion power can be a critical situation for the DJI T40 Agras, as it directly affects the drone’s ability to maintain flight. Here are some potential causes and emergency procedures: Potential Causes: Battery Failure: A depleted battery or a malfunctioning battery can lead to a loss of power. Motor Failure: Mechanical or electrical issues with the drone’s motors can cause them to stop functioning. Electrical System Issues: Problems with the drone’s electrical wiring, power distribution, or ESCs (Electronic Speed Controllers) can result in power loss. Emergency Procedures: Assess the Situation: Identify the Cause: Try to determine why the propulsion power has failed. Is it a battery issue, a motor problem, or an electrical system malfunction? Evaluate Risks: Assess the immediate risks to the drone, pilot, and surroundings. Prioritize Safety: Maintain Visual Contact: If possible, regain visual contact with the drone to better understand its flight path. Avoid Hazardous Areas: Steer the drone away from any potential hazards, such as power lines, buildings, or water bodies. Transition to Autorotation: If Applicable: If the drone is equipped with autorotation capabilities, transition to autorotation mode to maintain altitude and control. Manual Descent: If autorotation is not available, prepare for a controlled descent. Plan for Landing: Identify a Suitable Landing Zone: Look for a clear and level area for landing. Prepare for Landing: Orient the drone for a stable landing approach. Execute the Landing: Controlled Descent: Perform a controlled descent, maintaining a steady speed and avoiding sudden drops. Final Approach: Align the drone with the landing zone and prepare for touchdown. Smooth Landing: Aim for a gentle landing to minimize damage to the drone. Additional Tips: Regular Maintenance: Conduct routine inspections and maintenance of the drone’s propulsion system, including motors, ESCs, and batteries. Battery Management: Follow the manufacturer’s recommendations for battery care and storage. Emergency Landing Practice: Practice emergency landings in a controlled environment to familiarize yourself with the procedures. By following these procedures and taking preventive measures, you can reduce the risk of propulsion power failures and be prepared to respond effectively if one occurs. |
| 4.1 (d) | Loss of engine power | Not Applicable The DJI T40 Agras is a drone, which uses electric motors for propulsion, not engines. |
| 4.1 (e) | Low battery voltage | Low battery voltage in the DJI T40 Agras can be a critical issue, as it can lead to loss of power and forced landing. Here are some steps to take if you encounter low battery voltage: Monitor the Battery Level: Keep a close eye on the battery level indicator on your remote controller or in the DJI app. Plan for Landing: When the battery voltage reaches the low battery warning threshold, start planning for a safe landing. Return to Home: If possible, use the return-to-home function to return the drone to its home point. This will help conserve battery power. Manual Landing: If the battery voltage is critically low or the return-to-home function is not available, perform a manual landing in a safe location. Land Gently: Land the drone gently to avoid damaging the battery or other components. Inspect the Battery: After landing, inspect the battery for any visible damage or signs of overheating. Additional Tips: Charge the Battery Fully: Always fully charge the battery before each flight. Use High-Quality Batteries: Use only genuine DJI batteries or other reputable brands. Monitor Battery Temperature: Avoid flying in extreme temperatures, as this can affect battery performance. Land Early: If you anticipate needing to land due to low battery, land as soon as possible to avoid a forced landing. By following these tips and taking proactive measures, you can help prevent low battery voltage and ensure safe and reliable operation of your DJI T40 Agras. |
| 4.1 (f) | Loss of navigational components Heading or Altitude | Losing navigational components such as heading or altitude can be a critical situation for the DJI T40 Agras, as it can affect the drone’s ability to maintain stability and control. Here are some potential causes and emergency procedures: Potential Causes: Sensor Failure: Failures in sensors like the IMU (Inertial Measurement Unit), barometer, or GPS can lead to loss of heading or altitude information. Communication Issues: Interference or loss of communication with the ground station can disrupt the transmission of navigation data. Software Glitches: Software bugs or errors can affect the processing of navigation data. Emergency Procedures: Assess the Situation: Identify the Affected Component: Determine whether you have lost heading, altitude, or both. Evaluate Risks: Assess the immediate risks to the drone, pilot, and surroundings. Prioritize Safety: Maintain Visual Contact: If possible, regain visual contact with the drone to better understand its flight path. Avoid Hazardous Areas: Steer the drone away from any potential hazards, such as power lines, buildings, or water bodies. Transition to Manual Control: Smooth Takeover: Gradually transition from autopilot to manual control. Use Available Data: Rely on remaining sensors and visual cues to maintain control. Plan for Landing: Identify a Suitable Landing Zone: Look for a clear and level area for landing. Prepare for Landing: Orient the drone for a stable landing approach. Execute the Landing: Controlled Descent: Perform a controlled descent, maintaining a steady speed and avoiding sudden drops. Final Approach: Align the drone with the landing zone and prepare for touchdown. Smooth Landing: Aim for a gentle landing to minimize damage to the drone. Additional Tips: Regular Maintenance: Conduct routine inspections and maintenance of the drone’s navigation components, including sensors and communication systems. Redundancy: Consider using redundant navigation systems or sensors to reduce the risk of complete loss of data. Practice Manual Flight: Regularly practice flying the T40 Agras in manual mode to improve your skills and confidence. By following these procedures and taking preventive measures, you can reduce the risk of losing navigational components and be prepared to respond effectively if it occurs. |
| 4.1 (g) | Loss of Global Navigation Satellite System | Losing GNSS can be a critical issue for the DJI T40 Agras, as it is a primary source of positioning and navigation data. Here are some potential causes and emergency procedures: Potential Causes: Obstructions: Buildings, trees, or other obstacles can block GNSS signals. Interference: Electromagnetic interference from other electronic devices can disrupt GNSS reception. Weather Conditions: Adverse weather conditions, such as heavy rain, fog, or strong winds, can affect GNSS signal quality. Equipment Failure: Malfunctions in the GNSS receiver or antenna can lead to loss of signal. Emergency Procedures: Assess the Situation: Identify the Cause: Try to determine why GNSS has been lost. Evaluate Risks: Assess the immediate risks to the drone, pilot, and surroundings. Prioritize Safety: Maintain Visual Contact: If possible, regain visual contact with the drone to better understand its flight path. Avoid Hazardous Areas: Steer the drone away from any potential hazards, such as power lines, buildings, or water bodies. Transition to Manual Control: Smooth Takeover: Gradually transition from autopilot to manual control. Use Available Data: Rely on remaining sensors, such as the IMU and barometer, to maintain control. Plan for Landing: Identify a Suitable Landing Zone: Look for a clear and level area for landing. Prepare for Landing: Orient the drone for a stable landing approach. Execute the Landing: Controlled Descent: Perform a controlled descent, maintaining a steady speed and avoiding sudden drops. Final Approach: Align the drone with the landing zone and prepare for touchdown. Smooth Landing: Aim for a gentle landing to minimize damage to the drone. Additional Tips: Redundancy: Consider using a redundant GNSS receiver or antenna to reduce the risk of complete loss of signal. Regular Maintenance: Conduct routine inspections and maintenance of the GNSS equipment. Practice Manual Flight: Regularly practice flying the T40 Agras in manual mode to improve your skills and confidence. By following these procedures and taking preventive measures, you can reduce the risk of losing GNSS and be prepared to respond effectively if it occurs. |
| 4.1 (h) | Loss of Data Link | Losing data link with the ground station can be a critical situation for the DJI T40 Agras, as it can disrupt communication and control. Here are some potential causes and emergency procedures: Potential Causes: Distance: Exceeding the maximum communication range. Obstructions: Objects blocking the line of sight between the drone and the ground station. Interference: Interference from other electronic devices or radio signals. Equipment Failure: Malfunctions in the drone’s or ground station’s communication systems. Emergency Procedures: Assess the Situation: Identify the Cause: Try to determine why the data link has been lost. Evaluate Risks: Assess the immediate risks to the drone, pilot, and surroundings. Prioritize Safety: Maintain Visual Contact: If possible, regain visual contact with the drone to better understand its flight path. Avoid Hazardous Areas: Steer the drone away from any potential hazards, such as power lines, buildings, or water bodies. Transition to Autonomous Return: If Available: If the drone is equipped with an autonomous return-to-home function, activate it to guide the drone back to its home point. Manual Return: If Autonomous Return Fails: If the return-to-home function is unavailable or fails, manually guide the drone back to a safe landing area. Plan for Landing: Identify a Suitable Landing Zone: Look for a clear and level area for landing. Prepare for Landing: Orient the drone for a stable landing approach. Execute the Landing: Controlled Descent: Perform a controlled descent, maintaining a steady speed and avoiding sudden drops. Final Approach: Align the drone with the landing zone and prepare for touchdown. Smooth Landing: Aim for a gentle landing to minimize damage to the drone. Additional Tips: Maintain Line of Sight: Whenever possible, maintain a clear line of sight between the drone and the ground station. Use a Booster Antenna: If operating at long distances, consider using a booster antenna to improve signal strength. Check Communication Equipment: Regularly inspect and maintain the drone’s and ground station’s communication systems. By following these procedures and taking preventive measures, you can reduce the risk of losing data link and be prepared to respond effectively if it occurs. |
| 4.1 (i) | Loss of remote pilot station | Losing remote pilot station control can be a critical situation for the DJI T40 Agras, as it can disrupt communication and control. Here are some potential causes and emergency procedures: Potential Causes: Battery Failure: A depleted battery or a malfunctioning battery in the remote controller can lead to loss of connection. Communication Issues: Interference from other electronic devices or radio signals can disrupt the communication link. Equipment Failure: Malfunctions in the remote controller or ground station can cause loss of connection. Emergency Procedures: Assess the Situation: Identify the Cause: Try to determine why the remote pilot station has been lost. Evaluate Risks: Assess the immediate risks to the drone, pilot, and surroundings. Prioritize Safety: Maintain Visual Contact: If possible, regain visual contact with the drone to better understand its flight path. Avoid Hazardous Areas: Steer the drone away from any potential hazards, such as power lines, buildings, or water bodies. Transition to Autonomous Return: If Available: If the drone is equipped with an autonomous return-to-home function, activate it to guide the drone back to its home point. Manual Return: If Autonomous Return Fails: If the return-to-home function is unavailable or fails, manually guide the drone back to a safe landing area. Plan for Landing: Identify a Suitable Landing Zone: Look for a clear and level area for landing. Prepare for Landing: Orient the drone for a stable landing approach. Execute the Landing: Controlled Descent: Perform a controlled descent, maintaining a steady speed and avoiding sudden drops. Final Approach: Align the drone with the landing zone and prepare for touchdown. Smooth Landing: Aim for a gentle landing to minimize damage to the drone. Additional Tips: Redundant Controllers: Consider using a redundant remote controller to minimize the risk of complete loss of control. Battery Management: Ensure that both the drone’s and remote controller’s batteries are fully charged before each flight. Communication Check: Regularly check the communication link between the drone and the remote pilot station. By following these procedures and taking preventive measures, you can reduce the risk of losing remote pilot station control and be prepared to respond effectively if it occurs. |
| 4.1 (j) | Loss of power of remote pilot station | Loss of power to the remote pilot station can be a critical issue, as it directly affects your ability to control the DJI T40 Agras. Here are some potential causes and emergency procedures: Potential Causes: Battery Depletion: The remote pilot station’s battery may be low or depleted. Power Source Issues: If using an external power source, ensure it’s connected properly and functioning correctly. Equipment Failure: The remote pilot station itself may experience a malfunction. Emergency Procedures: Assess the Situation: Identify the Cause: Determine if the issue is a battery problem, power source issue, or equipment failure. Evaluate Risks: Assess the immediate risks to the drone, pilot, and surroundings. Prioritize Safety: Maintain Visual Contact: If possible, regain visual contact with the drone. Avoid Hazardous Areas: Steer the drone away from any potential hazards. Transition to Autonomous Return (if available): If the drone has an autonomous return-to-home function, activate it to guide the drone back to its home point. Manual Return: If autonomous return is unavailable or fails, manually guide the drone back to a safe landing area. Plan for Landing: Identify a suitable landing zone. Prepare for a controlled descent and landing. Post-Landing Inspection: Inspect the remote pilot station for any damage or signs of malfunction. Additional Tips: Battery Management: Ensure the remote pilot station’s battery is fully charged before each flight. Redundant Power Source: Consider using a backup power source, such as a portable battery pack. Regular Maintenance: Perform routine maintenance on the remote pilot station to prevent equipment failures. By following these procedures and taking preventive measures, you can reduce the risk of losing power to the remote pilot station and be prepared to respond effectively if it occurs. |
| 4.1 (k) | Loss of remote pilot / RPA observer communication | Losing communication between the remote pilot and the RPA observer can be a critical issue, as it can affect the overall safety and efficiency of the operation. Here are some potential causes and emergency procedures: Potential Causes: Distance: Exceeding the maximum communication range. Obstructions: Objects blocking the line of sight between the remote pilot and the RPA observer. Interference: Interference from other electronic devices or radio signals. Equipment Failure: Malfunctions in the communication equipment used by the remote pilot or RPA observer. Emergency Procedures: Assess the Situation: Identify the Cause: Try to determine why communication has been lost. Evaluate Risks: Assess the immediate risks to the drone, pilot, and surroundings. Prioritize Safety: Maintain Visual Contact: If possible, ensure that the RPA observer maintains visual contact with the drone. Avoid Hazardous Areas: Steer the drone away from any potential hazards. Transition to Autonomous Return (if available): If the drone is equipped with an autonomous return-to-home function, activate it to guide the drone back to its home point. Manual Return: If autonomous return is unavailable or fails, manually guide the drone back to a safe landing area. Plan for Landing: Identify a Suitable Landing Zone: Look for a clear and level area for landing. Prepare for Landing: Orient the drone for a stable landing approach. Execute the Landing: Controlled Descent: Perform a controlled descent, maintaining a steady speed and avoiding sudden drops. Final Approach: Align the drone with the landing zone and prepare for touchdown. Smooth Landing: Aim for a gentle landing to minimize damage to the drone. Additional Tips: Redundant Communication: Consider using redundant communication channels, such as voice radio and data link, to minimize the risk of complete loss of communication. Emergency Procedures: Develop and practice emergency procedures for situations where communication is lost. Regular Maintenance: Ensure that all communication equipment is properly maintained and functioning correctly. |
| 4.1 (l) | Dealing with structural damage | Structural damage to the DJI T40 Agras can compromise its flight performance and safety. If you suspect structural damage, it is important to take immediate action to assess the extent of the damage and address it appropriately. Identifying Structural Damage: Visual Inspection: Carefully inspect the drone for any visible cracks, fractures, or warping of the frame, arms, or other components. Functional Testing: Check if the drone’s flight characteristics have changed, such as difficulty maintaining stability or unusual noises. Emergency Procedures: If you suspect structural damage: Ground the Drone: Immediately land the drone and prevent further flight. Assess the Damage: Carefully inspect the drone for the extent of the damage. Consult a Technician: If the damage is extensive or you are unsure how to proceed, consult a qualified DJI technician or authorized repair center. Repair Options: Minor Repairs: For minor damage, such as small cracks or broken parts, you may be able to repair the drone yourself using approved repair kits or replacement parts. However, it is essential to follow the manufacturer’s guidelines and ensure proper repair techniques. Professional Repair: For more significant damage, it is recommended to seek professional assistance from a DJI authorized repair center. They have the expertise and tools to diagnose and repair structural damage effectively. Preventive Measures: To minimize the risk of structural damage: Handle with Care: Handle the drone gently and avoid dropping or crashing it. Store Properly: Store the drone in a safe and protected environment to prevent accidental damage. Regular Inspections: Conduct regular inspections of the drone’s structure for any signs of wear or damage. Follow Manufacturer’s Guidelines: Adhere to the manufacturer’s guidelines for operation, maintenance, and storage. Important Note: If you are unsure about the extent of the structural damage or the repair process, it is always best to consult a professional. Attempting to repair the drone incorrectly can lead to further damage or safety risks. |
| 4.1 (m) | Additional failure modes that can occur in the DJI T40 Agras. | Payload-Related Failures: Sprayer Malfunction: Issues with the sprayer system, such as clogged nozzles or leaks, can affect the application of chemicals or seeds. Payload Attachment Failure: The payload itself may become detached from the drone due to loose connections or mechanical failures. Environmental Factors: Extreme Weather: Severe weather conditions like heavy storms, hail, or extreme temperatures can damage the drone or its components. Foreign Object Ingestion: The drone’s propellers or other parts may ingest foreign objects, leading to damage or failure. Software and Firmware Issues: Software Glitches: Bugs or errors in the drone’s software can cause unexpected behavior or malfunctions. Firmware Updates: Incorrect installation or updates of firmware can lead to compatibility issues or performance problems. Human Error: Pilot Error: Mistakes made by the pilot, such as incorrect operation or poor decision-making, can contribute to failures. Maintenance Errors: Improper maintenance or repairs can lead to damage or malfunctions. It’s important to note that this list is not exhaustive, and other unforeseen failures can occur. Regular maintenance, proper operation, and awareness of potential risks can help minimize the likelihood of these failures. |
| Safety Systems Assessment | Revision Number: | 0riginal | |
| Effective Date: | 01 January 2024 |
Section 5
Hazard Assessment
Hazard Assessment for the DJI T40 Agras RPA
(a) Identification of RPA Functions
The DJI T40 Agras is primarily designed for agricultural applications, such as:
- Crop spraying: Applying pesticides, herbicides, or fertilizers to crops.
- Data collection: Gathering aerial imagery and data for analysis and monitoring.
- Inspection: Inspecting crops, infrastructure, or other assets.
(b) Systems that Assist with Identification of Failure Conditions
The DJI T40 Agras incorporates various systems to help identify potential failure conditions:
- Redundant systems: The drone uses redundant components (e.g., motors, sensors) to minimize the impact of failures.
- Health monitoring: The drone’s onboard computer continuously monitors the health of various systems and components.
- Telemetry: Telemetry data provides real-time information about the drone’s status, allowing operators to identify potential issues.
- Obstacle avoidance: The drone’s sensors and algorithms help detect and avoid obstacles, reducing the risk of collisions.
(c) Management and Mitigation of Failure Conditions
- Emergency procedures: Aviation UAV the operator should be familiar with emergency procedures for various failure scenarios, such as loss of control, battery failure, or communication issues.
- Regular maintenance: Routine maintenance, including inspections, cleaning, and calibrations, can help prevent failures and identify potential issues early.
- Redundancy: The use of redundant components can mitigate the impact of failures and provide backup systems.
- Risk assessment: Regular risk assessments can help identify potential hazards and develop mitigation strategies.
(d) List of Alarms and Methods for Troubleshooting
The DJI T40 Agras provides various alarms and alerts to indicate potential issues:
- Battery low: Alerts the operator when the battery level is low.
- Gimbal error: Indicates a problem with the gimbal system.
- Obstacle detected: Alerts the operator when an obstacle is detected.
- Communication error: Indicates a problem with the communication link between the drone and the ground station.
- Motor error: Alerts the operator to a problem with one or more motors.
Troubleshooting methods can include:
- Checking for physical damage: Inspecting the drone for visible damage or signs of wear.
- Verifying connections: Ensuring that all connections are secure and properly connected.
- Calibrating sensors: Calibrating sensors like the IMU and compass to ensure accurate readings.
- Updating firmware: Ensuring that the drone’s firmware is up-to-date.
- Consulting the user manual: Referencing the user manual for troubleshooting guidance and specific error codes.
By understanding these potential hazards and implementing appropriate management and mitigation strategies, operators can minimize the risk of failures and ensure safe and efficient operation of the DJI T40 Agras.
Summary of the DJI AGRAS T40 Safety Systems Assessment
The DJI AGRAS T40 is a large agricultural drone designed for efficient and safe operations. It features a robust structure, advanced flight capabilities, and various safety systems to ensure reliable performance.
Key Safety Features and Procedures:
- Redundant Flight Control Systems: Multiple systems are in place to maintain control even if one fails.
- Obstacle Avoidance: Sensors and algorithms help the drone detect and avoid obstacles.
- Return-to-Home Function: The drone can automatically return to its starting point in case of emergencies.
- Emergency Landing: The drone can be instructed to perform an emergency landing if necessary.
- Battery Monitoring: The system constantly monitors battery levels to ensure safe flight.
- Emergency Procedures: The manual outlines specific procedures to follow in case of emergencies, such as loss of autopilot or flight control.
Performance Characteristics:
- Flight Envelope: Wide operating range with high altitude and wind resistance capabilities.
- Payload Capacity: Can carry heavy payloads for various agricultural tasks.
- Endurance: Offers extended flight times for efficient operations.
- Navigation Systems: Advanced navigation systems ensure precise positioning and control.
- Safety Systems: Robust safety features to mitigate risks and ensure safe operation.
Operational Considerations:
- Environmental Factors: Be aware of limitations due to weather conditions, wind, and other environmental factors.
- Take-off and Landing: Follow recommended distances and areas for safe operations.
- Maintenance: Regular maintenance and inspections are crucial for optimal performance and safety.
- Regulatory Compliance: Adhere to local regulations and guidelines for drone operation.
By understanding the safety systems, performance characteristics, and operational guidelines, operators can effectively use the DJI AGRAS T40 for agricultural tasks while minimizing risks and ensuring safe operations.