# SDR QR9R20210901004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 1, 2021
- Submitted: September 1, 2021
- Operation: General aviation
- Filed by: [M1 Support Services, repair station QR9R369D](https://openairdocs.org/faa-repair-station/QR9R369D/m1-support-services.md) (OpenAirDocs)
- Make and model: Bolkms BK117C2
- Aircraft serial: 11722219496
- Aircraft time: 2,303 hours
- System (JASC): [6321 · Main Rotor Brake](https://openairdocs.org/jasc/6321)
- Part: Pad
- Part number: B635M18X1301
- Condition: Unreliable
- Location: Rotor Brake
- Stage of operation: NR
- 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/QR9R20210901004

## Discrepancy

ROTOR BRAKE FOUND TO BE INEFFECTIVE (CAUTION ADVISORY ON CAD INDICATED THAT IT WAS ENGAGING). ROTOR BRAKE CHECK PERFORMED IAW 05-60-00, 6-1. ROTOR BRAKE CONFIRMED AS INEFFECTIVE (TOOK 2 MINUTES AND 25 SECONDS FOR ROTOR TO STOP).

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