# SDR ASAA2017080721557

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2017
- Submitted: August 8, 2017
- Operation: Air carrier
- Aircraft: [N566AS](https://openairdocs.org/aircraft/N566AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35182
- Aircraft time: 40,595 hours, 12,150 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7220 · Turbine Engine Air Inlet Section](https://openairdocs.org/jasc/7220)
- Part: Blades
- Part number: 3400010380
- 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/ASAA2017080721557

## Discrepancy

DURING ACCOMPLISMENT OF T/C 78472002,  FOUND DAMAGED CU-NI COATING GREATER THAN AREA X WITH NO WEAR ON BASE MATERIAL DOVE TAIL PRESSURE FACE, IAW AMM 72-21-200-801-F00 STEP 2K(1)(C). NR 1 ENGINE BLADES 1, 4, 9, 11, 18, 19, 20, 22, 23, AND 24.  ACFT GROUNDED. REMOVED AND REPLACED ALL 24 FAN BLADES ON NR 1 ENGINE IAW AMM 72-21-02-900-801-F00.

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