What was found
CONT CAB UNABLE TO CONTROL TEMPERATURE WAS TOO COLD AT ALL PHASES OF FLIGHT EVEN AT W SETTING. GROUNDED - YES. REMOVED AND REPLACED TRIM AIR REGULATING AND S/O VALVE REF B737-900 AMM 21-62-01.
- Difficulty date
- August 7, 2022
- Submitted
- August 8, 2022
- Operation
- Air carrier
- Aircraft
- N459AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36352
- Aircraft time
- 31,366 hours, 9,893 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Regulator Valve
- Part number
- 32149721
- Part serial
- 601
- Condition
- Inoperative
- Location
- Left Ecs Bay
- Part time
- 68,000 hours, 31,300 cycles
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.