# SDR 97ZZZX4903

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 30, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N417AL](https://openairdocs.org/aircraft/N417AL), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53054
- System (JASC): [6322 · Rotorcraft Cooling Fan System](https://openairdocs.org/jasc/6322)
- Part: Bearing
- Part number: 406040339105
- Condition: Rough
- Location: T/R Drive
- Part time: 634 hours
- Component: 406040320101
- 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/97ZZZX4903

## Discrepancy

NR 2 SHAFT REMOVED FROM AIRCRAFT DUE TO ROUGH BEARING.  FOUND BEARING 406-040-339-105 INSTALLED AT AIRCRAFT HOURS 808.0 HOURS ROUGH.  ALSO, SHAFT 406-040-320-101, TT 1410.8 HOURS.  FORWARD SPLINES WORN AND CORRODED BEYOND LIMITS.

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