# SDR QR9R20210902003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 2, 2021
- Submitted: September 2, 2021
- Operation: General aviation
- Make and model: Bolkms BK117C2
- Aircraft serial: 11721899447
- Aircraft time: 1,924 hours
- System (JASC): [6321 · Main Rotor Brake](https://openairdocs.org/jasc/6321)
- Part: Pad
- Part number: B635M18X1301
- Condition: Failed
- Location: Rotor Brake
- Stage of operation: LD
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QR9R20210902003

## Discrepancy

ROTOR BRAKE FAILED TO STOP ROTOR SYSTEM IN ALLOWED TIME. AIRCRAFT RESTRICTED FROM ROTOR BRAKE USE.

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