Service difficulty report · Controller · Boeing 777222

Difficulty date
September 27, 2012
Submitted
November 15, 2012
Operation
Air carrier
Aircraft
N775UA
Make and model
Boeing 777222
Aircraft serial
26947
Aircraft time
70,246 hours, 12,471 cycles
Engine
Pwa PW4077
Part
Controller
Part number
11511007
Part serial
37
Condition
Faulty
Location
Cabin Pressure
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

REPLACE THE AIR SUPPLY CABIN PRESSURE CONTROLLER FOR LEFT PACK FLOW CONTROL VALVE NOT BEING ABLE TO BE SHUTOFF. REPLACED ASCPC PER AMM, OPS CHECK GOOD AT THIS TIME.