# SDR 98ZZZX2443

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 29, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N6699U](https://openairdocs.org/aircraft/N6699U), registered now
- Make and model: Mooney M20C
- Registry model: [Mooney M20C](https://openairdocs.org/model/mooney-m20c) (OpenAirDocs)
- Aircraft serial: 2426
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: Interconnect
- Part number: 7150
- Condition: Failed
- Location: Rudder Horn
- Part time: 2,643 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/98ZZZX2443

## Discrepancy

OWNER REPORTED VIOLENT NOSEWHEEL SHIMMY ON LANDING ROLL-OUT.  INSPECTION REVEALED RUDDER HORN INTERCONNECT, PN 7150, BROKE AT WELD.  RESULTANT DAMAGE TO UPPER GEAR STRUCTURE, P/N 5074, WAS NOTED.  INSPECTION OF SUBJECT WELD REVEALED THE EVIDENCE OF A PRE-EXISTING CRACK.  SUGGEST RECURRING NDT INSPECTION OF OLD STYLE HORNS FOR CRACKS.

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