- Difficulty date
- November 5, 2021
- Submitted
- November 9, 2021
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41734
- Aircraft time
- 32,025 hours, 10,299 cycles
- Part
- Unknown
- Part number
- UNKNOWN
- Condition
- Unknown
- Location
- Unknown
- 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. REF B737-900 FIM 21-62 TASK 848, #2 PZTC FREV FLT LOGGED FLT DECK TRIM VLV FAULT, FAULT RESETTABLE. BOTH PZTC'S BITE VERIFY TESTED GOOD W/O CURRENT FAULTS. VERIFIED BOTH PACKS OPS CHECKED NORMAL ON GND W/O FAULT LIGHTS.