67 Auxiliary Power Unit (APU) (ATA 49) service difficulty reports for the Boeing 727 — 0.1% of all reported difficulties.
Most reported components
- APU 32
- BEARING 3
- TURBINE WHEEL 2
- CONNECTOR 2
- SEAL 2
- EXHAUST PIPE 2
- FUEL CONTROL 2
- OIL SYST 1
- APU WIRING 1
- EXHAUST CLAMP 1
- BLEED SYST 1
- RELAY 1
- EXHAUST SHROUD 1
- OIL SEAL 1
- TURBINE 1
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).