What was found
APU HAD A COMPLETE FAILURE AFTER NORMAL START. COMPRESSOR CASE SPLIT. FOUND TURBINE WHEEL FAILED. REPLACED APU AND MUFFLER.
- Difficulty date
- March 31, 2002
- Submitted
- April 9, 2002
- Operation
- Air carrier
- Aircraft
- N390UA
- Make and model
- Boeing 737322
- Aircraft serial
- 24665
- Aircraft time
- 35,480 hours, 25,488 cycles
- Engine
- Ge CFM56*
- System (JASC)
- 4920 · APU Core Engine
- Part
- Turbine Wheel
- Part number
- 4500381
- Part serial
- V84HA535
- Condition
- Failed
- Location
- Apu
- Component
- Apu · Hamltn · 62T47C1
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.