What was found
APU REPORTS SHOWS CT5ATP TEMP IS STILL AT/BEYOND THE 605 DEGREE THRESHOLD. GROUNDED - YES. REMOVED AND REPLACED APU REF B737-900 AMM 49-11-00/401. OPS AND LEAK CHECK GOOD.
- Difficulty date
- January 3, 2023
- Submitted
- January 4, 2023
- Operation
- Air carrier
- Aircraft
- N431AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 43255
- Aircraft time
- 33,913 hours, 10,752 cycles
- System (JASC)
- 4920 · APU Core Engine
- Part
- Apu
- Part number
- 38007021
- Part serial
- P9990
- Condition
- Overtemp
- Location
- Zone 100
- Part time
- 10,728 hours, 19,067 cycles
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.