# SDR 98ZZZX3254

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 14, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N444G](https://openairdocs.org/aircraft/N444G), registered now
- Make and model: Gulstm 500A
- Aircraft serial: 124974
- Engine: Cont IO520F
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Crankshaft
- Part number: 631716
- Condition: Broken
- Location: Rt Engine
- Part time: 3,413 hours
- Stage of operation: CR
- Nature of condition: Y
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX3254

## Discrepancy

WHILE CRUSING AT 5,000 FEET, 2,300 RPM, 23 INCH MP, 62 PERCENT POWER, ENGINE SHUDDERED AND LOCKED UP.  PROPELLER WAS FEATHERED AND A NORMAL LANDING MADE.  ENGINE TEAR DOWN REVEALED THAT THE VAR CRANKSHAFT FAILED AT THE FORWARD CHEEK OF NR 2 ROD.

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