Service difficulty report · Engine · Boeing 737990ER

Difficulty date
February 24, 2023
Submitted
March 1, 2023
Operation
Air carrier
Aircraft
N409AS
Make and model
Boeing 737990ER
Aircraft serial
41733
Aircraft time
36,279 hours, 11,577 cycles
Engine time
54,174 hours, 24,444 cycles
Part
Engine
Part number
CFM567B27
Part serial
874470
Condition
Worn
Location
Left Wing
Part time
54,174 hours, 24,444 cycles
Stage of operation
IN
How discovered
V
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 ASA T/C 78472010 IT WAS NOTED THAT ALL FAN BLADE SHIMS FOR THE #1 ENGINE TO BE WORN. GROUNDED - YES. REMOVED #1 ENGINE ESN 874470. REF ASA SHOP W/O # 1944222.