What was found
CONT CAB ZONE TEMP CAUTION LT SINGLE CHANNEL FAILURE. GROUNDED - YES. REMOVED AND REPLACED PRIMARY FLIGHT DECK TEMP CONTROL VALVE REF B737-800 AMM 21-61-21, LEAK CHECK GOOD, ACCOMPLISHED BITE CHECK NO FAULTS NOTED.
- Difficulty date
- May 15, 2021
- Submitted
- May 17, 2021
- Operation
- Air carrier
- Aircraft
- N538AS
- Make and model
- Boeing 737890
- Aircraft serial
- 41188
- Aircraft time
- 33,916 hours, 9,887 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Modulating Valve
- Part number
- 3989085
- Part serial
- 24974
- Condition
- Failed
- Location
- Lt Ecs Bay
- Part time
- 19,575 hours, 6,354 cycles
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.