Service difficulty report · Control Valve · Boeing 757222

Difficulty date
December 11, 2010
Submitted
December 17, 2010
Operation
Air carrier
Aircraft
N510UA
Make and model
Boeing 757222
Aircraft serial
24780
Aircraft time
69,430 hours, 21,935 cycles
Engine
Pwa PW2037
Part
Control Valve
Part number
3987505
Part serial
305
Condition
Faulty
Location
Cabin Pressure
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

BLEED & CABIN PRESSURE ISSUES. FLIGHT DIVERTED. REPLACED LEFT PACK TEMP CONTROL VALVE.