Service difficulty report · Shutoff Valve · Boeing 767322

Difficulty date
April 21, 2011
Submitted
May 10, 2011
Operation
Air carrier
Aircraft
N668UA
Make and model
Boeing 767322
Aircraft serial
30024
Aircraft time
43,144 hours, 11,574 cycles
Engine
Pwa PW4056
Part
Shutoff Valve
Part number
7732887810
Part serial
167
Condition
Faulty
Location
Bleed Air Sys
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

DUCT PRESS SPLIT DURING CLIMB L 11 PSI R 35 PSI AND DURING CRZ L 15 PSI R 25 PSI. REPLACED LEFT PRSOV PER MM. ACP'D ENG RUN PER JRH, BLEED SHIFT NORMAL, NO SPLIT NOTED.