Service difficulty report · Isolation Valve · Boeing 777222

Difficulty date
January 3, 2012
Submitted
January 5, 2012
Operation
Air carrier
Aircraft
N797UA
Make and model
Boeing 777222
Aircraft serial
26924
Aircraft time
62,021 hours, 8,761 cycles
Engine
Pwa PW40903
Part
Isolation Valve
Part number
32907706
Part serial
136
Condition
Faulty
Location
Bleed Air Sys
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
D

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

What was found

BLEED ISLN VALVE R RIGHT BLEED ISOLATION VALVE NOT IN COMMANDED POSITION. STATUS REPLACED R BLEED ISO VLV IAW MM.