What was found
LEFT PACK LIGHT ILLUMINATED AFTER TAKEOFF LIGHT EXTINGUISHES WHEN MASTER CAUTION SYSTEM IS RESET. GROUNDED - YES. REMOVED AND REPLACED L/H PACK TEMP CONTROL VALVE ASSY. REF B737-800 AMM 21-51-10. GRD VERIFICATION TESTS SATISFACTORY.
- Difficulty date
- February 1, 2022
- Submitted
- February 3, 2022
- Operation
- Air carrier
- Aircraft
- N581AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35188
- Aircraft time
- 51,945 hours, 15,422 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 9171
- Condition
- Inoperative
- Location
- Left Ecs Bay
- Part time
- 48,184 hours, 14,433 cycles
- Stage of operation
- TO
- 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.