Service difficulty report · Shutoff Valve · Boeing 767322

Difficulty date
June 29, 2011
Submitted
July 25, 2011
Operation
Air carrier
Aircraft
N675UA
Make and model
Boeing 767322
Aircraft serial
29243
Aircraft time
40,475 hours, 10,364 cycles
Engine
Pwa PW4056
Part
Shutoff Valve
Part number
79027013
Part serial
310
Condition
Faulty
Location
Bleed Air Sys
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
D

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

What was found

RT ENG HPSOV EICAS MSG WITH ASSOCIATED ENG BLEED LIGHT ON. REPLACED HPSOV PER MM, HIGH PRESSURE CONTROLLER PER MM, RIGHT BLEED AIR CONTROL CARD ASSY AND RIGHT BLEED SWITCH. ALL NO HELP. NO MORE TIME IAD. RELOCKED HPSOV IN CLOSED POSITION PER MEL. REF FAULT ISOLATION. PERFORMED HEALTH CHECK ON HIGH STAGE. REF FAULT ISOLATION. PERFORMED HEALTH CHECK ON HIGH STAGE. FOUND TWO LINES LEAKING AT CONTROLLER. HIGH STAGE VALVE RE-ACTIVATED REF MEL. REPAIRED LINES.