What was found
ZONE TEMP LIGHT CONT CAB ON RECALL DURING DESCENT. GROUNDED - YES. REPLACED CABIN TRIM AIR MODULATING VALVE - B737-900 AMM 21-61-21.
- Difficulty date
- June 12, 2022
- Submitted
- June 14, 2022
- Operation
- Air carrier
- Aircraft
- N403AS
- Make and model
- Boeing 737900ER
- Aircraft serial
- 41730
- Aircraft time
- 35,706 hours, 11,430 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Modulating Valve
- Part number
- 3989083
- Part serial
- 2591
- Condition
- Faulty
- Location
- Left Ecs Bay
- Part time
- 83,549 hours, 44,300 cycles
- Stage of operation
- DE
- 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.