# SDR AU970275

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 18, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Engine: Cont IO520F
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Saddle
- Part number: 2400925R
- Condition: Fretted
- Location: Recip  Eng Main
- Component: Cont, IO520F
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU970275

## Discrepancy

(AUS) AT ENGINE OVERHAUL THE FOLLOWING WAS FOUND: 1. CRANKCASE MAIN BEARING SADDLE EVIDENCE OF FRETTING AND NO4  CAMTUNNEL SCORED 2. CAMSHAFT WAS INSPECTED USING MPI AND CRACKS WERE FOUND ON TWO LOBES.  ENGINE WAS FROM A PNG REGISTERED AIRCRAFT

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