Service difficulty report · Modulating Valve · Boeing 737890
FAA SDR system
- Difficulty date
- September 14, 2023
- Submitted
- September 15, 2023
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35179
- Aircraft time
- 61,814 hours, 18,680 cycles
- Part
- Modulating Valve
- Part number
- 3989083
- Part serial
- 11898
- Condition
- Faulty
- Location
- Left Ecs Bay
- Part time
- 46,618 hours, 16,032 cycles
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONT CAB ZONE TEMP ILLUMINATES ON MC RECALL. RESETS W/M RESET. GROUNDED - YES. (RESOLVED ON W/O: 1967872 TASKCARD: N/R-00003 ) CONFIRMED FAULT, CONT CAB ZONE TEMP LIGHT ILLUMINATE ON RECALL, PACK/ZONE TEMP CONTROLLER SHOWS HARD FAIL "FLIGHT DECK TCV" (V143). REMOVED & REPLACED FLIGHT DECK TCV REF AMM 21-61-21, GROUND FUNCTIONAL CK NML REF AMM 21-61-00-700-806-002. AIRCRAFT RELEASED FROM MEL 21-21G, C/N 14032560. SEAMC NOTIFIED "PETER." REVERSAL OF CONFIGURATION CHANGES NOT REQUIRED.