647 Indicating & Recording (ATA 31) service difficulty reports for the Boeing 737 (all variants) — 0.2% of all reported difficulties.
Most reported components
- WARNING LIGHT 205
- DISPLAY 105
- WARNING MESSAGE 69
- WARNING SYSTEM 56
- UNKNOWN 23
- CDU 20
- LIGHT 12
- DEU 12
- WARNING HORN 11
- SWITCH 10
- INDICATOR 9
- FAULT MESSAGE 8
- MODULE 6
- LAMP 5
- ELECTRONIC UNIT 5
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).