What was found
AFT CABIN ZONE TEMP ON RECALL - CLEARS WHEN MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED RH AFT TRIM MODULATING VALVE REF B737-800 AMM 21-61-21.
- Difficulty date
- December 14, 2022
- Submitted
- December 16, 2022
- Operation
- Air carrier
- Aircraft
- N559AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35178
- Aircraft time
- 56,592 hours, 16,638 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Modulating Valve
- Part number
- 3989083
- Part serial
- 2922
- Condition
- Faulted
- Location
- Rt Ecs
- Part time
- 80,955 hours, 32,290 cycles
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.