Service difficulty report · Engine · Boeing 737990ER

Difficulty date
August 20, 2015
Submitted
August 24, 2015
Operation
Air carrier
Aircraft
N478AS
Make and model
Boeing 737990ER
Aircraft serial
44105
Aircraft time
344 hours, 104 cycles
Engine
Cfmint CFM567B27E
Part
Engine
Condition
Faulted
Location
Nr 1
Stage of operation
IN
How discovered
9
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

WHILE PERFORMED T/C 78273000, FOUND NR 1 ENGINE FAULT 79-31121, OIL FILTER SIGNALS DISAGREE, LONG TIME FAULT. ACFT GROUNDED. ON DEFERRAL.