Service difficulty report · Shutoff Valve · Boeing 767323

Difficulty date
December 1, 2024
Submitted
December 10, 2024
Operation
Air carrier
Aircraft
N321CM
Make and model
Boeing 767323
Aircraft serial
29431
Aircraft time
90,175 hours, 16,011 cycles
Part
Shutoff Valve
Part number
79775515
Part serial
891254
Condition
Failed
Location
Lt Engine
Part time
6,522 hours, 1,986 cycles
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

AFTER START LEFT ENGINE BLEED EICAS STAYS ON UNTIL THRUST IS MOVED TO > 80 N2. REPLACED PRSOV, OPS TEST GOOD IAW AMM 36-11-19