What was found
ZONE TEMP LIGHT ILLUMINATES UPON RECALL. EXTINGUISHES UPON MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED ZONE TRIM AIR MODULATING VALVE FOR CONT CAB REF B737-800 AMM 21-61-21/401.
- Difficulty date
- April 9, 2023
- Submitted
- April 13, 2023
- Operation
- Air carrier
- Aircraft
- N593AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35107
- Aircraft time
- 54,995 hours, 16,401 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Modulating Valve
- Part number
- 3989085
- Part serial
- 21208
- Condition
- Faulted
- Location
- Lt Ecs Bay
- Part time
- 4,568 hours, 1,331 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.