# SDR 106476B

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 21, 2003
- Submitted: June 3, 2003
- Operation: General aviation
- 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 ARRIUS2B1
- System (JASC): [6321 · Main Rotor Brake](https://openairdocs.org/jasc/6321)
- Part: Disc
- Part number: C632A2108102
- Condition: Failed
- Location: Rotor Brake
- Part time: 1,068 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/106476B

## Discrepancy

FOUND DURING 500 HOUR INSPECTION.  INSPECTION CHECK WIGH DIAL INDICATOR REQUIRED DISASSEMBLE.  SPLINES INSPECTED AND MEASURED WITH PINS.  BEYOND LIMITS, PART REJECTED.  NOTE: ROTOR BRAKE DISC FREE FLOATS ON THIS SPLINE ASSEMBLY.  WEAR STEP ONLY IN AREA DISC RIDES.

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