Service difficulty report · Valve · Boeing 757222

Difficulty date
September 27, 2012
Submitted
October 5, 2012
Operation
Air carrier
Aircraft
N590UA
Make and model
Boeing 757222
Aircraft serial
28708
Aircraft time
58,276 hours, 16,318 cycles
Engine
Pwa PW2037
Part
Valve
Part number
3987865
Part serial
378
Condition
Faulty
Location
Cabin Temp
Stage of operation
NR
How discovered
O
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

CABIN TEMP STILL HARD TO CONTROL, HAD TO GO TRIM OFF. THEN OK. ZONE TEMP CNTR FAILED FORWARD TRIM VALVE. REPLACED VALVE, OPS CHECK GOOD.