# SDR ASAA2020122533761

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 25, 2020
- Submitted: December 29, 2020
- Operation: Air carrier
- Aircraft: [N569AS](https://openairdocs.org/aircraft/N569AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35184
- Aircraft time: 50,534 hours, 15,307 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7220 · Turbine Engine Air Inlet Section](https://openairdocs.org/jasc/7220)
- Part: Blade
- Part number: 3400010380
- Part serial: DE1743844
- Condition: Deformed
- Location: Nr 2 Eng Fan
- Part time: 20,226 hours, 8,087 cycles
- 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/ASAA2020122533761

## Discrepancy

FOUND DISTORTION ON NR 2, NR 11 FAN BLADE, REF LP NR 6007945.  GROUNDED-YES.  PERFORMED B737-800 AMM 72-21-02-200-801-F00 LIMITS FOR BLADES DEFORMATION AREA K PARAGRAPH K (1) (H) FIG 606.  FOUND DIA Q OUT OF LIMITS.  REMOVED AND REPLACED FAN BLADE NR 11 AND NR 23, IAW AMM 72-21-02.  FOUND FAN BLADE PLATFORM BETWEEN FAN BLADE NR 10 AND NR 11 DAMAGED.  INSPECTED SURROUNDING BLADES PLATFORMS AND SPACERS, IAW AMM 72-21-02, NO OTHER DAMAGE/DEFECTS NOTED.  INSTALLED NEW PLATFORM, IAW AMM 72-21-02.  PERFORMED ENGINE VIBRATION SURVEY, IAW AMM 72-71-00-00.

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