3DR H520-G, Flight Manual

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2.2.6 MANUFACTURER RECOMMENDED PART REPLACEMENT
PART INTERVALS
Propellers 20 Flights
Landing Pads/Feet 100 Flights
Batteries 200 - 250 Cycles*
Motors 400 Flights
Landing Gear 400 Flights
Motor Arm Lock/Catch 400 Flights
Internal Cooling Motor 400 Flights
ST10C Controller Fan 400 Flights
ST10C Controller Battery 400 Flights
Time Between Overhaul 500 Hours**
*Batteries
Batteries may fail due to overheating, being dropped or any number of other causes. Any battery that is
bulged or distorted in the casing should be immediately disposed of to avoid impending failure that may
lead to mid-air power loss or explosion. Self-contained batteries may not be repaired.
Dispose of batteries by placing the battery in a salt water bath for 24 hours. Deliver to a recycling center or
dispose of them safely.
**Time Between Overhaul (TBO)
See 2.2.5 Annual Flight Maintenance that is recommended to be done at an Authorized 3DR repair facility.
Users may choose to set a more conservative TBO.