Service difficulty report · Shutoff Valve · Boeing 777222

Difficulty date
July 12, 2010
Submitted
July 14, 2010
Operation
Air carrier
Aircraft
N777UA
Make and model
Boeing 777222
Aircraft serial
26916
Aircraft time
61,473 hours, 11,426 cycles
Engine
Pwa PW4077
Part
Shutoff Valve
Part number
32907706
Part serial
44
Condition
Faulty
Location
Apu
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

ON ENG START GOT EICAS ENG AUTO START L&R MESSAGE. APU BLEED STATUS MESSEGE. DEFERED APU BLEED VALVE, MM SG 49-10990 REF FIM. IF NECESSARY WILL REPLACE IGVA. REPLACED APU BLEED SHUTOFF VALVE, VALVE BAD FROM STOCK. IT WOULD NOT CLOSE WHEN BLEED SWITCH SHUTOFF. ANOTHER VALVE AOG'D REF Q5198. REPLACED APU BLEED SHUT-OFF, STILL HAD APU BLEED MESSAGE ON APU STARTUP IAW MM. REPLACED IGV ACTUATOR IAW MM AND MESSAGE CLEARED. ENGINE STARTS NORMAL.