Service difficulty report · Valve · Boeing 7379

Difficulty date
September 20, 2023
Submitted
September 21, 2023
Operation
Air carrier
Aircraft
N291BT
Make and model
Boeing 7379
Aircraft serial
44088
Aircraft time
8,393 hours, 2,414 cycles
Part
Valve
Part number
632920682
Part serial
60A153
Condition
Damaged
Location
#1 Engine
Part time
8,393 hours, 2,414 cycles
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

WHILE ACCOMPLISHING TASK CARD #72-ASA-03 FOUND HIGH PRESSURE SHUTOFF VALVE HPSOV ON #1 ENG LOCKOUT BOLT DAMAGED FROM VALVE. 3 CD PULLED ENG #1 SPAR VLV, ENG #1 IGN L AND IGN R. GROUNDED - YES. PERFORMED ALTERNATE DEACTIVATION PER ASA CHAP 5-07-01 TABLE 3 ITEM 7 51122.REMOVED THE ENG #1 HPSOV REF AMM 36-11-07 INSTALLED NEW HPSOV REF AMM 36-11-07-4--=801 STEPS A THRU H2 RESET 3 CBS 51122 9/20/23. PERFORMED OPERATIONAL CK AND LEAK CK PER AMM 36-11-07 OPS CKS GOOD LW 77617 ALTERNATE DEACTIVATION REVERSED.

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