# SDR 106459B

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 21, 2003
- Submitted: May 28, 2003
- Operation: Air carrier
- Aircraft: [N255SD](https://openairdocs.org/aircraft/N255SD), registered now
- Make and model: Urocop EC120B
- Registry model: [Urocop EC120B](https://openairdocs.org/model/eurocopter-ec120b) (OpenAirDocs)
- Aircraft serial: 1102
- Engine: Tmeca ARRIU2F
- System (JASC): [6510 · Tail Rotor Drive Shaft](https://openairdocs.org/jasc/6510)
- Part: Disc
- Part number: C635C1003203
- Part serial: OHTAF28
- Condition: Inoperative
- Location: Tail Rotor Drive
- Part time: 500 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/106459B

## Discrepancy

FOUND DURING 500 HOUR INSPECTION:  VISIBLE WEAR STEP, REPLACED IAW MFG TECH.  NOTE:  DISC FREE FLOATS ON MAIN GEAR BOX TAILROTOR OUTPUT SHAFT.  (P/N: 632A2108102) WHICH SEES INCREASED WEAR.

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