# SDR ALG2001F00042

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 4, 2001
- Submitted: November 27, 2001
- Operation: Air carrier
- Aircraft: [N457AL](https://openairdocs.org/aircraft/N457AL), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53151
- Engine: Allsn 250C20
- System (JASC): [6510 · Tail Rotor Drive Shaft](https://openairdocs.org/jasc/6510)
- Part: Coupler
- Part number: 407340340103
- Part serial: RNFS1262
- Condition: Cracked
- Location: Tail Rotor
- Component: T/R Driveshaft, Bell
- Component part number: 407040302103
- 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/ALG2001F00042

## Discrepancy

DAILY 25 HOUR INSPECTION FOUND NR 7 DISC PACK COUPLING CRACKED.

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