What was found
ZONE TRIM AIR MODULATING VALVE GAUGE FLUCTUATES ERRATICALLY EVERY TIME VALVE MOVES. OPS CHECKED THE A/C PACKS IAW AMM 21-61-00. FOUND ZONE TRIM VALVE TO BE INOPERATIVE.
- Difficulty date
- April 29, 2018
- Submitted
- May 1, 2018
- Operation
- Air carrier
- Aircraft
- N1427A
- Make and model
- Boeing 767306
- Aircraft serial
- 28098
- Aircraft time
- 76,670 hours, 16,000 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Valve
- Condition
- Inoperative
- Location
- A/C Pack
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.