Service difficulty report · Valve · Boeing 737990ER

Difficulty date
October 13, 2016
Submitted
October 17, 2016
Operation
Air carrier
Aircraft
N472AS
Make and model
Boeing 737990ER
Aircraft serial
60580
Aircraft time
6,099 hours, 1,947 cycles
Part
Valve
Part number
3989084
Part serial
23878
Condition
Failed
Location
Cabin Temp
Part time
6,093 hours, 1,945 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

AFT CABIN UNABLE TO CONTROL TEMP GOING FULL HOT. ACFT GROUNDED. REPLACED AFT CABIN TRIM AIR VALVE, OPS AND LEAK CHECKED GOOD IAW AMM 21-61-21. TEMP CONTROL NORMAL.