2,828 Flight Controls (ATA 27) service difficulty reports for the Boeing 737 (all variants) — 1.1% of all reported difficulties.
Most reported components
- SENSOR 380
- TRANSMITTER 371
- FLAP SYSTEM 175
- ACTUATOR 163
- MOTOR 139
- FSEU 134
- INDICATOR 106
- PROXIMITY SENSOR 101
- UNKNOWN 96
- TRIM MOTOR 86
- FLAP 66
- SWITCH 50
- CONNECTOR 48
- BUSHING 36
- WARNING SYSTEM 33
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).