# SDR 99ZZZX3523

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 5, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N427AL
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53107
- System (JASC): [6510 · Tail Rotor Drive Shaft](https://openairdocs.org/jasc/6510)
- Part: Bearing
- Part number: 407340339103
- Condition: Rough
- Location: T/R Drive
- Part time: 87 hours
- Component: 407044303105
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX3523

## Discrepancy

UNIT WAS REMOVED FOR VIBRATIONS.  FOUND 2 EACH 407-340-339-103 BEARINGS ROUGH.  FOUND 1 EACH 206-061-432-116 HOUSING CRACKED.

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