What was found
DURING CLIMBOUT AFT CABIN RAN HIGH AT 46 DEGREES C AND WOULD NOT COOL WITH FULL COLD SELECTED. RAN CHECKLIST AND CABIN COOLED WITH TRIM AIR SELECTED OFF. ACFT GROUNDED. R & R AFT CABIN TRIM AIR MODULATING VALVE IAW AMM 21-61-21.
- Difficulty date
- May 10, 2016
- Submitted
- May 12, 2016
- Operation
- Air carrier
- Aircraft
- N433AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41704
- Aircraft time
- 10,176 hours, 3,267 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Valve
- Part number
- 3989084
- Part serial
- 10108
- Condition
- Failed
- Location
- Cabin Temp
- Part time
- 30,736 hours, 9,546 cycles
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.