Maintaining drone flight safety is the key to ensuring stable flight and avoiding accidents. Flight safety not only includes the operating skills of the drone, but also involves factors such as the status of the equipment, the flight environment, laws and regulations. The following are some effective measures to help ensure the safety of the drone during flight:

   
1. Pre-flight preparation

   
1.1 Check the equipment
Battery check: Make sure the battery is fully charged and there is no swelling, damage, etc. It is recommended to check the status of the battery before flight and ensure that the battery is installed correctly.
Propeller check: Check whether the propeller is intact and ensure that there are no cracks, wear or damage. Make sure the propeller is installed tightly to prevent loosening during flight.
Sensor and GPS check: Make sure the GPS signal is stable, the flight controller (FCU) and sensors (such as gyroscopes, accelerometers, and compasses) are working properly. Calibrate sensors regularly to maintain the accuracy of the equipment.
1.2 Flight plan
Flight route planning: Plan the flight path in advance to avoid flying into no-fly zones or restricted areas. Use flight planning software (such as DJI Go, Litchi) to plan waypoint flights.
Flight environment assessment: Choose an open, unobstructed flight site, and avoid obstacles such as tall buildings, trees, and power lines. Check weather conditions to avoid the impact of bad weather (such as strong winds, rain, snow, haze, etc.) on flight.
Check flight restrictions: Understand local flight regulations and no-fly zones, and comply with relevant regulations such as flight altitude and flight range.

     
2. Safety measures during flight

   
2.1 Maintain a reasonable flight altitude
Avoid flying in high-risk areas such as high-voltage lines, buildings, and bridges, and ensure that the drone's flight altitude is within a safe range.
According to the flight environment, comply with the flight altitude regulations of various places. Usually, commercial flights are limited to 120 meters (400 feet).
2.2 Real-time monitoring of flight status
Real-time data monitoring: View the drone's flight data in real time through the remote control or mobile phone application, including flight altitude, flight speed, GPS signal strength, battery power, etc. Check the flight status regularly to ensure that the device is working properly.
Low battery warning: When the battery is low, the drone will usually automatically issue a warning. When the battery is low, return the drone to the take-off point or land in time.
2.3 Avoid flying in bad weather
Wind speed control: Strong winds may cause the drone to fly unstably or even cause it to fall. Avoid flying in weather with wind speeds exceeding 30 km/h.
Rain, snow, and lightning: Avoid flying in bad weather conditions such as rain, snow, fog, or lightning. Water vapor or electric shock may damage the drone and affect flight stability.
Low temperature: Low temperature may affect the performance of the battery, resulting in a shorter battery life. Avoid flying in too low a temperature, especially for LiPo batteries, which are prone to battery damage when the temperature is too low.
2.4 Avoid signal interference during flight
The signal between the flight controller and the drone remains stable: Avoid flying in areas with strong electromagnetic interference (such as high-voltage towers, TV towers, etc.), which can ensure a stable connection between the drone and the remote control.
GPS signal interference: Avoid flying in places with dense buildings, basements, or indoors where the GPS signal is weak. Low signal areas will cause the drone to fly unstably.
2.5 Use the return to home function in a timely manner
Automatic return to home: Modern drones are usually equipped with an automatic return to home (RTH) function. If the signal between the drone and the remote controller is lost, or the battery is low, the system will automatically start the return mode and take the drone back to the take-off point.
Manual return: In case of emergencies, the pilot can manually start the return function to reduce the risk of drone flight.

  
3. Post-flight inspection and maintenance

   
3.1 Battery management
Battery cooling: After the flight, make sure the battery is cooled and charged. Avoid storing the battery in a high temperature environment for a long time to extend the battery life.
Battery storage: If you do not fly for a long time, the battery should be stored in a half-charged state (about 40%-60% power) and avoid over-discharge.
3.2 Cleaning and maintenance
Cleaning equipment: Clean all parts of the drone after flight, especially the motor, propeller and sensor. Dust, sand and other debris may affect the performance of the device.
Regular inspection: Regularly check whether the various parts of the drone (such as motors, sensors, gimbals, etc.) are worn or damaged to ensure that the equipment is in good working condition.

   
4. Laws and regulations and flight permits

   
4.1 Comply with flight regulations
Flight range: Comply with legal regulations on flight altitude and flight range. Depending on the laws of different countries or regions, drone flights are sometimes subject to specific restrictions, especially in areas such as city centers and near airports.
No-fly zones: Avoid flying into no-fly zones such as airports, military bases, and government buildings. Many drone applications (such as DJI Go, Litchi) provide real-time information about no-fly zones.
Flight permits: For some commercial flights, you may need to obtain a flight permit or register your drone with the civil aviation department. Make sure you understand and comply with relevant laws and regulations before flying.
4.2 Avoid privacy violations
Follow privacy protection regulations: Avoid filming in private areas and avoid invading the privacy of others. Comply with local privacy protection laws, especially when filming public or private events.

   
5. Pilot's operating skills

  
5.1 Strengthen flight skills training
Basic flight skills: Pilots should master basic flight operation skills, such as hovering, turning, acceleration, deceleration, etc. Before conducting complex flights (such as filming, waypoint flying), it is recommended to conduct multiple training in open areas.
Emergency operations: Pilots should have the ability to respond to emergency situations, such as signal loss, low battery, or GPS signal interruption. Familiarize yourself with the return function and manual control techniques.
5.2 Flight Simulation
Use a flight simulator: Many drone brands provide flight simulators to help novices practice their flying skills. Through the simulator, pilots can familiarize themselves with flight operations in advance and reduce operational errors in actual flights.

   
Summary
Maintaining drone flight safety requires comprehensive consideration of multiple factors such as equipment status, flight environment, pilot operating skills, and laws and regulations. By regularly checking equipment, reasonably planning flight routes, choosing suitable weather and environment, using the automatic return function in a timely manner, and complying with relevant laws and privacy protection regulations, pilots can greatly reduce risks during flight and ensure flight safety. At the same time, strengthening flight skill training and emergency response capabilities can help pilots cope with emergencies and ensure flight stability and safety.