What was found
LEFT ECS PACK ANALOG DISCRETE TO FMC DOES NOT INDICATE "OFF" WITH LEFT PACK SWITCH PLACED TO OFF. GROUNDED - YES. REMOVED AND REPLACED LH PACK CONTROL VALVE REF AMM 21-51-01-400-805-002.
- Difficulty date
- January 17, 2023
- Submitted
- January 19, 2023
- Operation
- Air carrier
- Aircraft
- N462AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36362
- Aircraft time
- 32,156 hours, 10,177 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Control Valve
- Part number
- 3966081
- Part serial
- 7497
- Condition
- Faulted
- Location
- Lt Acm
- Part time
- 32,160 hours, 10,178 cycles
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.