What was found
CONTROL CABIN ZONE TEMP ILLUMINATED EXTINGUISHES W/ MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED CONTROL CABIN TRIM MODULATING VALVE IAW B737-800 AMM 21-61-21-000-801 AND AMM 21-61-21-000-801.
- Difficulty date
- September 25, 2022
- Submitted
- September 29, 2022
- Operation
- Air carrier
- Aircraft
- N513AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35192
- Aircraft time
- 49,622 hours, 14,903 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Modulating Valve
- Part number
- 3989083
- Part serial
- 2173
- Condition
- Faulty
- Location
- Left Ecs Bay
- Part time
- 85,593 hours, 43,122 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.