# SDR AOC05004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 13, 2005
- Submitted: December 13, 2005
- Operation: General aviation
- Aircraft: [N2869F](https://openairdocs.org/aircraft/N2869F), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53623
- Engine: Allsn 250C47B
- System (JASC): [6220 · Main Rotor Head](https://openairdocs.org/jasc/6220)
- Part: Spring
- Part number: 407310104105
- Condition: Broken
- Location: Rotor Head
- Part time: 291 hours, 495 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AOC05004

## Discrepancy

DURING A 300 HR INSPECTION, A LEAD/LAG DAMPER SPRING WAS FOUND BROKEN IN 2 PLACES. JUDGING FROM THE BREAK LINES, THE SPRING HAD BEEN CRACKED FOR SOME TIME.

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