# SDR AU510001772

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 12, 2005
- Submitted: June 6, 2006
- Operation: General aviation
- Make and model: Boeing 737476
- Engine: Cfmint CFM563C
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Turbine Blades
- Condition: Damaged
- Location: Engine
- Stage of operation: IN
- How discovered: B
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU510001772

## Discrepancy

(AUS) NR 1 ENGINE MAKING (POPPING) SOUNDS.  SOUNDS INCREASED WHEN THRUST LEVER INCREASED AND DECREASED WHEN THRUST LEVER RETARDED. BORESCOPE INSPECTION FOUND HPC BLADES DAMAGED BEYOND LIMITS. INVESTIGATION CONTINUING. (CASA NR 510001772)

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