Service difficulty report · Modulating Valve · Boeing 737890
FAA SDR system
- Difficulty date
- January 25, 2023
- Submitted
- January 31, 2023
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 41188
- Aircraft time
- 38,588 hours, 11,277 cycles
- Part
- Modulating Valve
- Part number
- 3989083
- Part serial
- 10470
- Condition
- Inoperative
- Location
- Lh Ecs Bay
- Part time
- 51,735 hours, 15,984 cycles
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"PACK" LIGHT LEFT. ILLUMINATES ONLY ON RECALL, EXTINGUISH MASTER RESET. GROUNDED - YES. (RESOLVED ON W/O: 1939921 TASKCARD: N/R-00002 ) REMOVED AND REPLACED L/H PACK TEMP CONTROL VALVE REF B737-800 AMM 21-61-21. BITE CHECK AND LEAK CHECK GOOD. THIS CLEARS MEL 21-32B FOR DEFECT NO. 60295533. PLACARDS REMOVED. SEAMC CARL NOTIFIED.