What was found
LEFT PACK LIGHT ILLUMINATED AFTER ENGINE START, RESET WITH MASTER CAUTION. GROUNDED - YES. REMOVED AND REPLACED L/H PACK TEMPERATURE CONTROL VALVE REF B737-800 AMM 21-51-10. OPS CHECK GOOD. GROUND VERIFICATION SUCCESSFUL.
- Difficulty date
- October 16, 2021
- Submitted
- October 20, 2021
- Operation
- Air carrier
- Aircraft
- N589AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35686
- Aircraft time
- 50,427 hours, 14,880 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Modulating Valve
- Part number
- 3989085
- Part serial
- 24061
- Condition
- None
- Location
- Left Ecs Bay
- Part time
- 20,257 hours, 5,652 cycles
- Stage of operation
- TX
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.