# SDR B1HR719229

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2001
- Submitted: September 26, 2001
- Operation: Air carrier
- Aircraft: [N407AM](https://openairdocs.org/aircraft/N407AM), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53309
- Engine: Allsn 250C47B
- System (JASC): [6420 · Tail Rotor Head](https://openairdocs.org/jasc/6420)
- Part: Yoke
- Part number: 406012102109
- Part serial: AFS1930
- Condition: Out Of Tolerance
- Location: Tail Rotor
- Part time: 1,495 hours
- 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/B1HR719229

## Discrepancy

DURING REPAIR OF TAIL ROTOR YOKE, BEARING BORES WERE FOUND TO BE OUT OF ACCEPTABLE LIMITS.  YOKE WAS REMOVED AND REPLACED.

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