What was found
DURING DESCENT CHECK, LEFT PACK LIGHT ILLUMINATED DURING RECALL. RESETS WHEN MASTER CAUTION RESET PUSHED. GROUNDED - YES. REMOVED AND REPLACED NR 1 TCV REF AMM 21-51-10. OPS CHK GOOD.
- Difficulty date
- October 3, 2018
- Submitted
- October 4, 2018
- Operation
- Air carrier
- Aircraft
- N457AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36355
- Aircraft time
- 18,646 hours, 6,195 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Modulating Valve
- Part number
- 3989083
- Part serial
- 9398
- Condition
- Failed
- Location
- Ac Bay
- Part time
- 42,545 hours, 13,998 cycles
- Stage of operation
- DE
- 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.