What was found
CONT CAB ZONE TEMP ILLUM W/ RECALL, LIGHT OUT W/ MASTER CAUTION RESET QRH COMPLETED. GROUNDED - YES. FOUND FAULT WITH FLT DECK TRIM VALVE, REMOVED AND REPLACED TRIM VALVE REF B737-800 AMM 21-61-21 OPS CHECKED GOOD, FAULT CLEARED.
- Difficulty date
- July 10, 2021
- Submitted
- July 13, 2021
- Operation
- Air carrier
- Aircraft
- N513AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35192
- Aircraft time
- 45,813 hours, 13,510 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Modulating Valve
- Part number
- 3989083
- Part serial
- 7103
- Condition
- Faulty
- Location
- Lt A/C Pack
- Part time
- 58,412 hours, 21,309 cycles
- Stage of operation
- NR
- 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.