What was found
WHILE PERFORMING T/C NG-21EA-23228-1 FOUND TCV FAULT ON ZONE TEMP CONT #1 GROUNDED - YES. REMOVED AND REPLACED L/H TCV REF B737-900 MM 21-51-10-400-801, OPS AND LEAK CHECK OK.
- Difficulty date
- June 9, 2021
- Submitted
- June 10, 2021
- Operation
- Air carrier
- Aircraft
- N477AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 40716
- Aircraft time
- 21,327 hours, 6,705 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 4533
- Condition
- Faulty
- Location
- Left Ecs Bay
- Part time
- 63,029 hours, 24,591 cycles
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.