What was found
APU TREND DATA SHOWS CT5ATP TEMP IS AT OR ABOVE THE THRESHOLD 593 DEGREES BUT LESS THAN 605 DEGREES. GROUNDED - YES. REF B737-900 AMM 49-61-12 REMOVED AND REPLACED ECU. OPS CHECK GOOD.
- Difficulty date
- June 10, 2022
- Submitted
- June 10, 2022
- Operation
- Air carrier
- Aircraft
- N494AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41729
- Aircraft time
- 23,207 hours, 7,133 cycles
- System (JASC)
- 4960 · APU Controls
- Part
- Ecu
- Part number
- 707208601
- Part serial
- 6505150201735
- Condition
- Faulty
- Location
- Aft Cargo Door
- Part time
- 23,207 hours, 7,133 cycles
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.