# SDR ASAA2017120522788

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2017
- Submitted: December 6, 2017
- Operation: Air carrier
- Aircraft: [N560AS](https://openairdocs.org/aircraft/N560AS), registered now
- 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](https://openairdocs.org/jasc/7220)
- 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
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017120522788

## Discrepancy

#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.

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