What was found
LEFT PACK LIGHT ILLUMINATED DURING RECALL. GROUNDED - YES. LT ZONE TEMP CONTROLLER BITE SHOWED TCV FAULT. FAULT CLEARED. REMOVED AND REPLACED LT TEMP CONTROL VALVE REF AMM 21-51-10. GROUND VERIFICATION SUCESSFUL REF AMM 21-51-10.
- Difficulty date
- September 11, 2019
- Submitted
- September 16, 2019
- Operation
- Air carrier
- Aircraft
- N491AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44109
- Aircraft time
- 15,347 hours, 5,009 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Control Valve
- Part number
- 3989085
- Part serial
- 21485
- Condition
- Faulted
- Location
- Ac Bay
- Part time
- 15,677 hours, 5,412 cycles
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.