Service difficulty report · Filter · Boeing 7379

Difficulty date
June 26, 2023
Submitted
June 29, 2023
Operation
Air carrier
Aircraft
N977AK
Make and model
Boeing 7379
Aircraft serial
43391
Aircraft time
3,756 hours, 1,135 cycles
Part
Filter
Part number
B131605066
Condition
Faulty
Location
#1 Engine
Stage of operation
IN
How discovered
V
Nature of condition
J
Precautionary procedure
K

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

What was found

#1 ENGINE IS ALERTING FOR OIL FILTER DELTA PRESSURE INCREASE AND APPROACHING OIL FILTER BYPASS INDICATION. (#PRI1) CNR 20230626065DO NOT EXTEND. GROUNDED - YES. ACCOMPLISHED TSR STEPS 1 THRU 4.NO OMF MX MSG NOTED, NO DEFECTS OR CONTAMINATIONS NOTED ON OIL FILTER CARTRIDGEINSTALLED NEW OIL FILTER CARTRIDGE REF MM 79-21-07.

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