What was found
LEFT PACK LIGHT ILLUMINATES ON MASTER CAUTION RECALL. LIGHT EXTINGUISHES ON RESET. GROUNDED - YES. REMOVED AND REPLACED LEFT PACK TEMP CONTROL VALVE REF B737-900 AMM 21-51-10.
- Difficulty date
- August 12, 2022
- Submitted
- August 15, 2022
- Operation
- Air carrier
- Aircraft
- N491AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44109
- Aircraft time
- 25,040 hours, 7,899 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Control Valve
- Part number
- 3989085
- Part serial
- 25079
- Condition
- Faulty
- Location
- Left Ecs Bay
- Part time
- 20,918 hours, 6,356 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.