# SDR 98ZZZX3520

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N487AL](https://openairdocs.org/aircraft/N487AL), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53204
- System (JASC): [6510 · Tail Rotor Drive Shaft](https://openairdocs.org/jasc/6510)
- Part: Disc Pack
- Part number: 406040340101
- Condition: Cracked
- Location: T/R
- Component: 407040302101
- 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/98ZZZX3520

## Discrepancy

WHILE PERFORMING A 25 HOUR INSPECTION, DISC PACK NR 7 WAS NOTED TO BE CRACKED.  THE CRACKED DISC OF THE 10 DISCS IS THE NR 10 DISC.  (THE VERY AFT DISC OF THE NR 7 DISC PACK).

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