What was found
DURING TAXI OUT, AFT CABIN TEMP MESSAGE APPEARED BEFORE ENG START. AIRCRAFT RETURNED TO GATE (BTB). MAINTENANCE DEFERRED AFT ZONE TEMP MOD TRIM VALVE IAW ABX B767 MEL 21-61-1-2. AIRCRAFT RETURNED TO SERVICE.
- Difficulty date
- December 4, 2025
- Submitted
- December 5, 2025
- Operation
- Air carrier
- Aircraft
- N227CY
- Make and model
- Boeing 767316
- Aircraft serial
- 26327
- Aircraft time
- 97,603 hours, 22,329 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Valve
- Condition
- Faulted
- Location
- Zone 100
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.