What was found
APU ON START OIL QTY FLLUXUATION, CHIP DETECTOR HAS DEBRIS AND OIL DRAINS FROM CHECK VALVE TO ZERO QTY. REPLACED APU IAW M57-49-02. APU OPS AND LEAK CHECKED GOOD. (K)
- Difficulty date
- January 11, 2008
- Submitted
- January 22, 2008
- Operation
- Air carrier
- Aircraft
- N550TZ
- Make and model
- Boeing 75733N
- Aircraft serial
- 32584
- Engine
- Rroyce RB211*
- System (JASC)
- 4920 · APU Core Engine
- Part
- Apu
- Part number
- 380029817
- Part serial
- P2504
- Condition
- Unserviceable
- Part time
- 22,108 hours, 6,949 cycles
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- K
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.