What was found
THE APU SUFFERED DAMAGE TO THE HIGH PRESSURE TURBINE BLADES AND SHEARING OF THE POWER TURBINE SHAFT AND CASING FLANGE BOLTS. P&WC WILL INVESTIGATE THE EVENT AND ADVISE OF ROOT CAUSE ONE DETERMINED.
- Difficulty date
- May 3, 2005
- Submitted
- August 3, 2005
- Operation
- General aviation
- Make and model
- Boeing 747400
- System (JASC)
- 4920 · APU Core Engine
- Part
- Apu
- Part number
- PW901A
- Part serial
- 900401
- Condition
- Damaged
- Location
- Apu Bay
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.