Service difficulty report · Control Valve · Boeing 737990ER
FAA SDR system
- Difficulty date
- June 10, 2020
- Submitted
- June 12, 2020
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41703
- Aircraft time
- 22,234 hours, 7,103 cycles
- Engine
- Cfmint CFM567B27E
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 1476
- Condition
- Faulty
- Location
- Ac Bay
- Part time
- 82,045 hours, 43,681 cycles
- Stage of operation
- NR
- 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.
What was found
AFTER ENGINE START CONTROL CABIN ZONE TEMP LIGHT ILLUMINATED. LIGHT EXTINGUISHED WITH MASTER CAUTION LTS PUSHED. GROUNDED - YES. CONFIRMED FAULT, "CONT CAB" ZONE LIGHT ON RECALL. NR 2 PACK/ZONE TEMP CONTROLLER BITE SHOWS HARD FAIL "FLIGHT DECK TCV" (V143). REMOVED & REPLACED FLIGHT DECK TCV REF AMM 21-61-21, LK CK & OPS CK NML REF AMM 21-61-00-700-806-002.