# SDR ALG2003F00059

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 11, 2003
- Submitted: June 18, 2003
- Operation: Air carrier
- Aircraft: [N5734M](https://openairdocs.org/aircraft/N5734M), registered now
- Make and model: Bell 206L-1
- Registry model: [Bell 206L-1](https://openairdocs.org/model/bell-helicopter-textron-206l-1) (OpenAirDocs)
- Aircraft serial: 45449
- Engine: Allsn 250C*
- System (JASC): [6510 · Tail Rotor Drive Shaft](https://openairdocs.org/jasc/6510)
- Part: Bearing
- Part number: VNMK47498
- Condition: Binding
- Location: T/R Driveshaft
- Part time: 17,439 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/ALG2003F00059

## Discrepancy

DURING DAILY SERVICE CHECK WHEN MAIN ROTOR BLADES WERE BEING ROTATED TO BE SECURED.  BINDING/ RATCHETING NOISE WAS HEARD WHEN MAIN ROTOR BLADES WERE ROTED.  FURTHER INVESTIGATION REVEALED THAT NOISE WAS COMING FROM NR4 TAIL ROTOR DRIVESHAFT BEARING.  BEARING DID NOT LOOK OVERHEATED.

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