120 Indicating & Recording (ATA 31) service difficulty reports for the Boeing 727 — 0.2% of all reported difficulties.
Most reported components
- WARNING HORN 18
- WARNING SYSTEM 17
- SWITCH 13
- T/O WARNING 9
- WARNING LIGHT 6
- BULB 5
- TO WARNING 4
- AURAL WARNING 3
- UNKNOWN 3
- WARNING SWITCH 2
- CIRCUIT CARD 2
- CONNECTOR 2
- INDICATOR 2
- PANEL 1
- AURAL WARN UNIT 1
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).