What was found
ON RECALL ZONE TEMP CONT CAB ILLUMINATES CLEARS ON RECALL. GROUNDED-YES. REMOVED AND REPLACED TRIM MODULATING VALVE, REF B737-800 AMM 21-61-21. OPERATIONS CHECK GOOD.
- Difficulty date
- November 28, 2020
- Submitted
- December 2, 2020
- Operation
- Air carrier
- Aircraft
- N537AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35204
- Aircraft time
- 33,446 hours, 9,746 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Modulating Valve
- Part number
- 3989083
- Part serial
- 9374
- Condition
- Faulty
- Location
- Lt A/C Pack
- Part time
- 49,204 hours, 15,580 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.