Service difficulty report · Control Valve · Boeing 737890
FAA SDR system
- Difficulty date
- January 10, 2020
- Submitted
- January 14, 2020
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35691
- Aircraft time
- 43,752 hours, 13,025 cycles
- Part
- Control Valve
- Part number
- 3989085
- Part serial
- 18274
- Condition
- Failed
- Location
- Cockpit
- Part time
- 25,651 hours, 8,110 cycles
- Stage of operation
- TX
- How discovered
- O
- 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
AFTER START, FLT DECK CONT CAB ZONE LIGHT ILLUMINATED. GROUNDED - YES. RT PACK ZONE TEMP CONTROLLER SHOWS FLIGHT DECK TCV (V143) FAIL. REMOVED & REPLACED TCV REF AMM 21-61-21, LK CK & OPS CK NML. ACCOMPLISHED RT PACK ZONE TEMP CONTROLLER BITE TEST REF AMM 21-61-00-700-806-002, OPS CK NML. NO FAULTS LOGGED ON LT SIDE.