# SDR GVNA2023F00199

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 13, 2023
- Submitted: June 13, 2023
- Operation: Air carrier
- Aircraft: N454MH
- Make and model: Bolkms BK117C2
- Aircraft serial: 9151
- Aircraft time: 8,464 hours, 38,351 cycles
- System (JASC): [5302 · Rotorcraft Tail Boom](https://openairdocs.org/jasc/5302)
- Part: Spar
- Part number: B535M2062103
- Condition: Cracked
- Location: Zone 300
- Part time: 8,464 hours, 38,351 cycles
- 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/GVNA2023F00199

## Discrepancy

DURING ROUTINE SCHEDULED INSPECTION FOUND CRACK IN TOP L/H SIDE OF THE VERTICAL FIN MAIN SPAR.

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