# SDR 2024FA0000524

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2024
- Submitted: July 23, 2024
- Operation: Air carrier
- Aircraft: [N390SF](https://openairdocs.org/aircraft/N390SF), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53407
- Aircraft time: 9,230 hours, 31,585 cycles
- Engine: Allsn 250C47B
- Engine time: 9,114 hours, 24,200 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Washer
- Part number: 14000725S22E6
- Condition: Cracked
- Location: Zone 200
- 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/2024FA0000524

## Discrepancy

WHILE CHANGING TRANSMISSION ASSEMBLY TECHNICIAN FOUND PYLON RETAINING BOLT WASHER PN:140-007-25S22E6 CRACKED ACROSS ONE SIDE ALL THE WAY THROUGH.

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