Service difficulty report · Control Valve · Boeing 737890
FAA SDR system
- Difficulty date
- April 11, 2021
- Submitted
- April 19, 2021
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35103
- Aircraft time
- 53,473 hours, 16,047 cycles
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 6697
- Condition
- Failed
- Location
- Cockpit Temp
- Part time
- 61,680 hours, 24,356 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
ON MASTER CAUTION RECALL CONT CAB ZONE TEMP LIGHT ILLUMINATES EXTINGUISHES ON MASTER CAUTION RESET. GROUNDED - YES. CONFIRMED FAULT, #2 PACK/ZONE TEMP CONTROLLER SHOWS HARD FAIL "FLIGHT DECK TCV". REMOVED & REPLACED FLIGHT DECK TCV (V143) REF B737-800 AMM 21-61-21, OPS CK NML REF AMM 21-61-00-700-806-002.