Service difficulty report · Control Valve · Boeing 777222

Difficulty date
November 22, 2008
Submitted
November 26, 2008
Operation
Air carrier
Aircraft
N780UA
Make and model
Boeing 777222
Aircraft serial
26944
Aircraft time
49,579 hours, 9,169 cycles
Engine
Pwa PW4077
Part
Control Valve
Part number
8102044
Condition
Faulty
Location
Rt Ac Pack
Stage of operation
CR
How discovered
O
Nature of condition
W
Precautionary procedure
A

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

What was found

LOSS OF RIGHT PACK. FLIGHT DIVERTED. REPLACED RIGHT PACK LOWER FLOW CONTROL VALVE. ACP AIR ON TESTS ON MAT. ALL OPS CHECK SATISFACTORILY. MSGS NOT ACTIVE.