5. Maintenance................................................................................................ 124
5.1 Overview ................................................................................................................................124
5.2 Maintenance schedule .........................................................................................................124
5.2.1 Zoe flight checks ...................................................................................................................127
5.2.1.1 Preflight check.......................................................................................................................127
5.2.1.2 Post-flight check....................................................................................................................127
5.2.2 Airframe maintenance .........................................................................................................127
5.2.2.1 Airframe check ......................................................................................................................127
5.2.2.2 Airframe extensive check.....................................................................................................128
5.2.2.3 Arm replacement ..................................................................................................................129
5.2.2.4 Airframe repair/replacement ..............................................................................................129
5.2.2.5 Battery connector insert check/replacement....................................................................129
5.2.3 Propeller maintenance.........................................................................................................129
5.2.3.1 Visual check ...........................................................................................................................130
5.2.3.2 Propeller track.......................................................................................................................130
5.2.3.3 Balancing the propeller........................................................................................................130
5.2.3.4 Propeller replacement .........................................................................................................131
5.2.4 Motor maintenance..............................................................................................................131
5.2.4.1 Motor check...........................................................................................................................131
5.2.4.2 Motor cleaning ......................................................................................................................132
5.2.4.3 Motor bearing replacement ................................................................................................132
5.2.4.4 Motor replacement...............................................................................................................132
5.2.5 ESC maintenance ..................................................................................................................133
5.2.5.1 Acoustic check .......................................................................................................................133
5.2.5.2 Performance check...............................................................................................................133
5.2.5.3 ESC replacement...................................................................................................................133
5.2.6 Autopilot maintenance.........................................................................................................133
5.2.6.1 IMU calibration......................................................................................................................134
5.2.6.2 GPS (compass) calibration ...................................................................................................134