What was found
ZONE TEMP CAUTION LIGHT ILLUMINATES DURING RECALL. GROUNDED - YES. REPLACED THE CONTROL CABIN TRIM AIR MODULATING VALVE, LEAK AND OPS CHECK GOOD REF B737-800 AMM 21-61-21/401 AND B737-800 FIM 21-62 TASK 842.
- Difficulty date
- May 1, 2022
- Submitted
- May 4, 2022
- Operation
- Air carrier
- Aircraft
- N512AS
- Make and model
- Boeing 737890
- Aircraft serial
- 39043
- Aircraft time
- 49,350 hours, 14,540 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Modulating Valve
- Part number
- 3989085
- Part serial
- 18522
- Condition
- Faulty
- Location
- Left Ecs Bay
- Part time
- 30,301 hours, 9,327 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.