# SDR QR9R2025040700001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2025
- Submitted: April 7, 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: 9273
- Aircraft time: 4,795 hours
- System (JASC): [6210 · Main Rotor Blades](https://openairdocs.org/jasc/6210)
- Part: Blade
- Part number: B621M1002104
- Part serial: 790
- 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/QR9R2025040700001

## Discrepancy

DURING INSPECTION OF M/R BLADE, MAINTENANCE DETECTED GREEN MAIN ROTOR BLADE HAS HORIZONTAL CRACK ON TRAILING EDGE FROM GRIP OUT TO PU TAPE. REMOVED AND REPLACED M/R BLADE IAW AMM 62-10-00,4-1.

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