# SDR QR9R2025080400001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 4, 2025
- Submitted: August 4, 2025
- 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: 9699
- Aircraft time: 4,375 hours
- System (JASC): [6210 · Main Rotor Blades](https://openairdocs.org/jasc/6210)
- Part: Blade
- Part number: B621M1002104
- Part serial: 3898
- Condition: Cracked
- Location: Main Rotor
- 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/QR9R2025080400001

## Discrepancy

BLUE MAIN ROTOR BLADE HAS CRACK ON TOP SIDE OF BLADE NEAR ROOT OUTSIDE OF PU FILM NEAR VIBRATION ABSORBER. RE-VERIFIED BY USING BOUNCE TEST WITH ALCOHOL. REMOVED AND REPLACED MAIN ROTOR BLADE IAW AMM 62-10-00, 4-1.

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