What was found
(AUS) APU TURBINE WHEEL DISINTEGRATED. SUSPECT CAUSED WAS A BI-HUBFAILURE OF THE TURBINE WHEEL DUE TO UNDETECTABLE HANIUM OXIDE INCLUSION FORMED DURING THE CASTING PROCESS.
- Difficulty date
- March 16, 2001
- Submitted
- August 7, 2001
- Operation
- General aviation
- Make and model
- Boeing 73733A
- Engine
- Cfmint CFM563B2
- System (JASC)
- 4920 · APU Core Engine
- Part
- Turbine
- Part number
- 38420723
- Condition
- Failed
- Location
- Apu Core Engine
- Part time
- 8,605 cycles
- Component
- Apu Core Engine · Garrtt · GTCP85129H
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- E
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.