# SDR M7KA201101104770

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 9, 2011
- Submitted: January 10, 2011
- Operation: Air carrier
- Aircraft: [N867MH](https://openairdocs.org/aircraft/N867MH), registered now
- Make and model: Urocop EC 130 B4
- Registry model: [Urocop EC 130 B4](https://openairdocs.org/model/eurocopter-ec-130-b4) (OpenAirDocs)
- Aircraft serial: 4770
- Aircraft time: 1,205 hours, 2,399 cycles
- System (JASC): [5302 · Rotorcraft Tail Boom](https://openairdocs.org/jasc/5302)
- Part: Structure
- Part number: UNKNOWN
- Condition: Cracked
- Location: Tailboom
- Part time: 1,205 hours, 2,399 cycles
- Component: Tailboom, Urocop
- Component part number: 350A2300600151
- 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/M7KA201101104770

## Discrepancy

DURING ROUTINE PERIODIC INSPECTION A VISIBLE CRACK IN THE PAINT AROUND A COUNTERSUNK RIVET ON THE TAIL BOOM CONE TO FENESTRON RING JUNCTION WAS NOTED.  FOLLOWING THE STRIPPING OF THE PAINT AND THE COMPLETION OF A DYE PENETRANT INSPECTION IT WAS DETERMINED THAT THE MOUNTING FLANGE FOR THE FENESTRON ATTACHMENT HAD A 1.5 INCH CRACK CENTERED THROUGH THE COUNTERSUNK RIVET BORE AT THE LOCATION OF THE CRACKED PAINT.  THIS DEFECT HAS NO APPROVED FIELD REPAIR AND A REPLACEMENT TAILBOOM HAS BEEN ORDERED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.