Service difficulty report · Isolation Valve · Boeing 777222

Difficulty date
January 3, 2011
Submitted
January 15, 2011
Operation
Air carrier
Aircraft
N229UA
Make and model
Boeing 777222
Aircraft serial
30557
Aircraft time
37,684 hours, 4,593 cycles
Engine
Pwa PW40903
Part
Isolation Valve
Part number
32907706
Part serial
91
Condition
Faulty
Location
Rt Bleed Sys
Stage of operation
IN
How discovered
O
Nature of condition
J
Precautionary procedure
K

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

What was found

RIGHT BLEED ISOLATION VALVE NOT IN COMMANDED POSITION. STATUS MSG-3610430 LATCHD TA MODE. POSITION INDICATION WAS BLANK ON MFD CH 36 PAGE FOR RT ISOLATION VALVE, ALSO SHOWS OPEN WHEN VALVE WAS CLOSED, SUSPECT RVDT FAULTY. REPLACED RT VALVE.