# SDR 99ZZZX2932

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 24, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N40677](https://openairdocs.org/aircraft/N40677), registered now
- Make and model: Maule M-4-220C
- Registry model: [Maule M-4-220C](https://openairdocs.org/model/maule-m-4-220c) (OpenAirDocs)
- Aircraft serial: 2181C
- Engine: Frnkln 6A350C1A
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Piston
- Part number: 20736
- Condition: Failed
- Location: Engine
- Part time: 1,046 hours
- Stage of operation: CL
- Nature of condition: E, R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX2932

## Discrepancy

APPROXIMATELY 15 MINUTES AFTER TAKEOFF, THE NR 4 PISTON SEPARATED FROM ITS CONNECTING ROD.  THIS CAUSED THE NR 4 CYLINDER TO FRACTURE RESULTING IN A COMPLETE LOSS OF OIL.  THE ENGINE STALLED FORCING AN EMERGENCY LANDING ON A RIVER BANK.  UPON LANDING, THE LEFT MAIN GEAR COLLAPSED WHICH FORCED THE AIRCRAFT INTO TREES LINING THE BANK.  AIRCRAFT SUFFERED SUBSTANTIAL DAMAGE.  PILOT WAS UNINJURED.

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