# SDR CA020208003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 31, 2002
- Submitted: March 4, 2002
- Operation: Air carrier
- Make and model: Bell 206B
- Registry model: [Bell 206B](https://openairdocs.org/model/bell-206b) (OpenAirDocs)
- Aircraft time: 15,471 hours
- Engine: Allsn 250C20
- System (JASC): [6210 · Main Rotor Blades](https://openairdocs.org/jasc/6210)
- Part: Washer
- Part number: 2060101543
- Condition: Cracked
- Location: M/R Head
- Component: Main Rotor Head, Bell, 206011100021
- 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/CA020208003

## Discrepancy

(CAN)   2060101543 WASHER WAS USED ON A BLADE BOLT WITH A NAS1022A14 NUT.  THE NUT IS A SMALLER NUT AND TENDS TO COVER ONLY 2/3 OF THE AREA OF THE WASHER. THE TORQUE REPETITIVE TORQUE CYCLES OVER TIME AND THE CUPPING OF THE WASHER CAUSED IT TO CRACK IN 3 PLACES AND BREAK.

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