Service difficulty report · Selector · Boeing 767322

Difficulty date
March 13, 2012
Submitted
April 3, 2012
Operation
Air carrier
Aircraft
N664UA
Make and model
Boeing 767322
Aircraft serial
29236
Aircraft time
48,654 hours, 13,172 cycles
Engine
Pwa PW4056
Part
Selector
Part number
1305027
Part serial
43
Condition
Defective
Location
Cabin Pressure
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

OUTFLOW VALVE INDICATION DOES NOT SHOW FULL OPEN WHEN OPEN, OUTFLOW VALVE PHYSICAL OPERATION IS NORMAL. FULL OPEN INDICATION SLIGHTLY OFF. CREW UNHAPPY WITH MM REF REGARDING INDICATION BASED ON VALVE, CONTROLLER, SELECTOR PART #, AS DETAILED IN MM. DEFERRED TO COMPLY WITH CREW REQUEST. REPLACED CABIN PRESSURE SELECTOR.