- Difficulty date
- April 22, 2015
- Submitted
- April 24, 2015
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35685
- Aircraft time
- 28,610 hours, 8,739 cycles
- Part
- Valve
- Part number
- 3989084
- Part serial
- 11895
- Condition
- Failed
- Location
- Cabin Temp
- Part time
- 22,082 hours, 6,609 cycles
- 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.
What was found
CONTROLLER CAB ZONE TEMP PRIMARY CONTROLLER INOPERATIVE. ACFT GROUNDED. REPLACED CONTROLLER CAB ZONE TEMP PRIMARY CONTROLLER AS REQUIRED. LEAK CKD GOOD, OPS CKD GOOD. PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST, NO FAULTS FOUND. REF AMM 21-61-21-860-008.