What was found
CONTROL CAB ZONE LT ON RECAL. GROUNDED - YES. COMPLETED PACK/ZONE TEMP CONTROLLER BITE TEST REF B737-800 AMM 21-61-00. FLT DECK TRIM VALVE FAULT FOUND. R&R THE CONTROL CABIN TRIM AIR VALVE(V143) REF AMM 21-61-21/401.
- Difficulty date
- February 6, 2023
- Submitted
- February 10, 2023
- Operation
- Air carrier
- Aircraft
- N594AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35191
- Aircraft time
- 52,759 hours, 15,619 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Valve
- Part number
- 3989083
- Part serial
- 7599
- Condition
- Faulty
- Location
- Left Ecs Bay
- Part time
- 59,881 hours, 20,518 cycles
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.