What was found
LEFT PACK LIGHT ILLUMINATES ON RECALL. PACK LIGHT EXTINGUISHES ON MASTER CAUTION RESET. GROUNDED - YES. REMOVED & REPLACED TRIM MODULATING VALVE. IAW B737-800 AMM 21-61-21/401. ORIG SUB DATE: 12/16/2022
- Difficulty date
- December 12, 2022
- Submitted
- December 22, 2022
- Operation
- Air carrier
- Aircraft
- N513AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35192
- Aircraft time
- 50,145 hours, 15,027 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Modulating Valve
- Part number
- 3989C83
- Part serial
- 1538
- Condition
- Faulted
- Location
- Lt Ecs
- Part time
- 88,834 hours, 44,949 cycles
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.