Service difficulty report · Shim · Boeing 737990ER

Difficulty date
September 16, 2018
Submitted
September 17, 2018
Operation
Air carrier
Aircraft
N423AS
Make and model
Boeing 737990ER
Aircraft serial
35206
Aircraft time
21,618 hours, 7,143 cycles
Engine
Cfmint CFM567B27E
Part
Shim
Part number
3402523070
Condition
Worn
Location
Nr 1 Engine
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 T/C 78472002 FOUND ALL 24 SHIMS WORN ON NR 1 ENGINE. GROUNDED - YES. REPLACED ALL 24 SHIMS ON NR 1 ENGINE REF T/C 78472002.