Service difficulty report · Modulating Valve · Boeing 737890
FAA SDR system
- Difficulty date
- February 7, 2022
- Submitted
- February 15, 2022
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35187
- Aircraft time
- 54,388 hours, 15,997 cycles
- Part
- Modulating Valve
- Part number
- 3989083
- Part serial
- 11578
- Condition
- Faulty
- Location
- Left Ecs Bay
- Part time
- 40,170 hours, 13,749 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
CONT CAB ZONE TEMP LIGHT ILLUMINATED ON RECALL EXTINGUISHES ON MASTER CAUTION RESET. GROUNDED - YES. CONFIRMED FAULT, #2 PACK/ZONE TEMP CONTROLLER SHOWS "FLIGHT DECK TCV (V143) FAIL & CONT CAB ZONE TEMP LIGHT ILLUMINATE WHEN RECALL. REMOVED & REPLACED SAME PER B737-800 AMM 21-61-21. GROUND FUNCTIONAL CK NML REF AMM 21-61-00-700-806-002.