Service difficulty report · Control Valve · Boeing 777222

Difficulty date
August 25, 2010
Submitted
August 27, 2010
Operation
Air carrier
Aircraft
N228UA
Make and model
Boeing 777222
Aircraft serial
30556
Aircraft time
35,975 hours, 4,405 cycles
Engine
Pwa PW4090
Part
Control Valve
Condition
Malfunctioned
Location
Rt A/C Pack
Stage of operation
IN
How discovered
9
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

RT PACK FLOW CONTROL VALVE NOT IN THE COMMANDED POSITION. STATUS MSG-2124304 LATCHD ER MODE. MSG-2124304 LATCHD ER MODE: SWAPPED RT PACK UPPER FCV WITH LOWER FCV, LOCKED UPPER FCV CLOSED AND CHECKED LOWER FCV WORKS NORMAL, LEAK CHECKED OK AND ALL TEST & INDICATION NORMAL IAW MM 21-51-01 AND 21-51-02.