SDR ASAA2017120522788

Service difficulty report · Shim · Boeing 737890

Difficulty date: December 5, 2017
Submitted: December 6, 2017
Operation: Air carrier
Aircraft: N560AS
Make and model: Boeing 737890
Aircraft serial: 35179
Aircraft time: 43,246 hours, 13,056 cycles
Engine: Cfmint CFM567B27
System (JASC): 7220 · Turbine Engine Air Inlet Section
Part: Shim
Part number: 3402523060
Condition: Damaged
Location: Nr 1 Engine Fan
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

#1 ENG ALL BLADE SHIMS HAS MOLYDAG COATING LOSS MORE THAN 25% NO WEAR TO BASE MATERIAL, #1 BLADE SHIM HAS A CRACK AND AXIAL RETENTION DISTORTION, AND BLADE SHIMS #2, #14, #16 HAS AXIAL RETENTION DISTORTION. REF B737-800AMM 72-21-02-200-801 STEP 2L. GROUNDED - YES. REPLACED ALL #1 ENGINE FAN BLADE SHIMS PER T/C #78472002.