Service difficulty report · Control Valve · Boeing 777222

Difficulty date
October 2, 2003
Submitted
October 28, 2003
Operation
Air carrier
Aircraft
N783UA
Make and model
Boeing 777222
Aircraft serial
26950
Aircraft time
29,601 hours, 4,535 cycles
Engine
Pwa PW4090
Part
Control Valve
Part number
8102044
Part serial
9709140
Condition
Failed
Location
Rt Pack Flow
Component
Proximity Switc
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

RT AIR CONDITIONING PACK FLOW CONTROL VALVE STATUS MESSAGE. RT LOWER FLOW CONTROL VALVE FAILED DUE TO BAD PROXIMITY SWITCH. RT LOWER FLOW CONTROL VALVE REPLACED.