What was found
CONT CAB-ZONE TEMP LIGHT ILLUMINATED ON MASTER RECALL. CAUTION LIGHT RESETS UPON MASTER CAUTION RESET. (AFTER PUSH BACK). GROUNDED - YES. REMOVED & REPLACED TRIM AIR MODULATING VALVE, OPS BITE CK GOOD REF B737-800 AMM 21-61-21.
- Difficulty date
- July 27, 2022
- Submitted
- August 1, 2022
- Operation
- Air carrier
- Aircraft
- N594AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35191
- Aircraft time
- 50,881 hours, 15,092 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Modulating Valve
- Part number
- 3989083
- Part serial
- 7980
- Condition
- Faulty
- Location
- Left Ecs Bay
- Part time
- 62,312 hours, 18,524 cycles
- Stage of operation
- TX
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.