3DR H520-G, Flight Manual

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13
2.2.4 ROUTINE MAINTENANCE
PREFLIGHT/EACH FLIGHT:
Aircraft
• Check motors for smooth rotation
• Batteries fully charged
• Battery fully seated and locked to airframe
• Check propellers for lock on motor
• Check propellers for nicks, cuts or other damage (replace if necessary)
• Check propellers for symmetry (replace if necessary)
• Landing gear for matched angle
• Gimbal properly attached to pin rails
• Gimbal vibration dampers properly seated, pinned for safety
• Check camera for full motion
ST10C Controller
• Fully charged
• Antenna(s) firmly seated
• Vents not blocked
• Always hover UAS at a height of approximately 10’ (to avoid being at eye level)
• Perform a controllability check prior to a mission (pitch, roll and yaw)
25 FLIGHTS MAINTENANCE (approx. 15 hours per cycle):
Aircraft
• Clean gimbal vibration dampers of debris and dust
• Check arm locks for positive operation
• Check the motor wire sleeves leading into the airframe for wear
• Clean motors of debris and dust using compressed air can
• Manually spin to assure there is no grit inside, and all propellers spin freely
• Clean leg actuators of debris and dust and check for leg tightness
• Inspect camera rails for wear
• Inspect camera filter threads for thread integrity
• Verify all screws are secure and hand tighten if necessary
• Listen to cooling fan for consistency/no unusual noise
• Wipe arms/legs of dust clean sonar ports, removing debris and dust
• Calibrate the compass, accelerometer and gimbal
ST10C Controller
• Verify all screws are secure and hand tighten if necessary
• Check vents for debris and dust and vacuum if necessary
• 3DR does not recommend blowing compressed air into these vents
• Check switch retainer rings for tightness