# SDR 98ZZZX4508

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 6, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N6639D](https://openairdocs.org/aircraft/N6639D), registered now
- Make and model: Beech C 23
- Registry model: [Beech C 23](https://openairdocs.org/model/beech-c-23) (OpenAirDocs)
- Aircraft serial: M2223
- System (JASC): [3252 · Shimmy Damper](https://openairdocs.org/jasc/3252)
- Part: Shimmy Dampener
- Part number: 1693800297
- Condition: Failed
- Location: Nlg
- Part time: 30 hours
- 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/98ZZZX4508

## Discrepancy

AIRCRAFT EXPERIENCED NOSE WHEEL SHIMMY.  A NEW SHIMMY DAMPENER INSTALLED.  THE USUAL PRECAUTIONS AND TROUBLESHOOTING PROCEDURES WERE UTILIZED TO DETERMINE SHIMMY DAMPENER.   WITHIN A FEW HOURS, ACFT REPORTED WITH SAME PROBLEM.  INSTALLED NEW SHIMMY DAMPENER MFG BY COMMERCIAL ACFT PRODUCTS (CAP P/N C100016-1A) AND THIS FLIGHT REPORTED NO SHIMMY.  S/N 638 MFG 7-97.  ANOTHER UNIT, S/N 574 MFG 1/95 FAILED IN LESS THAN 2 YEARS AS WITH S/N 596 MFG 4-96.

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