Fix em when they break crash sound funny look bad smell funny or don't do anything but sit there and look stupid at you. KeithWas there any parts replaced during this 2 years? reason i ask is I have seen the yuneec recommended maintenance and do not agree with all of it, however they did mention motor replacements, battery replacements due to high use. I'm sure these little electric motors dont last forever. brushed or brushless.. Did you do any of this?
Recommended Replacement Interval
This is recommended -- NOT LAW -- each operator will have a different experience do to many variables with flight conditions.
Replace batteries every 200-250 cycles.
Replace landing gear actuators
Replace motor arm lock/catch
Replace RealSense internal cooling fan
Replace ST16S Ground Station cooling fan
Replace ST16S Ground Station battery
TBO (Time Between Overhaul)
500 hours of operation, at an Authorized Yuneec repair station. Users may choose to set a more conservative TBO.