# SDR 99ZZZX3333

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 27, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N407JR](https://openairdocs.org/aircraft/N407JR), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53245
- System (JASC): [6321 · Main Rotor Brake](https://openairdocs.org/jasc/6321)
- Part: Bolt
- Part number: DD1661
- Condition: Worn
- Location: Rotor Brake
- Part time: 991 hours
- Component: DD1631
- 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/99ZZZX3333

## Discrepancy

BOLTS HAVE STEPS (GROOVES) WORN IN THEM.  THIS CAUSES THE PAD ASSY TO STICK.  BOLTS ARE USED AS GUIDE PINS.

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