# SDR 3D9A2014120600001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 2, 2014
- Submitted: December 6, 2014
- Operation: Air carrier
- Aircraft: N401DC
- Make and model: Bolkms BK117B2
- Aircraft serial: 7101
- Aircraft time: 7,753 hours, 21,800 cycles
- System (JASC): [5302 · Rotorcraft Tail Boom](https://openairdocs.org/jasc/5302)
- Part: Skin
- Condition: Cracked
- Location: Tailboom
- Part time: 7,753 hours, 21,800 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/3D9A2014120600001

## Discrepancy

0.75 INCH CRACK ON FUSELAGE TAIL CONE SKIN UNDER TOP RIVET OF AFT UPPER ECU MOUNT DISCOVERED DURING 6000 HOUR/6 YEAR INSPECTION.

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