# Proposed AD FAA-2012-0773: Eurocopter Deutschland GmbH Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-03-18
- Products: Eurocopter Deutschland
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 26, 2012, 77 FR 43736
- Comments due: September 24, 2012
- Became: [AD 2013-03-18](https://openairdocs.org/ad/2013-03-18)
- Docket: FAA-2012-0773 (https://www.regulations.gov/docket/FAA-2012-0773, where comments are filed)
- Project: 2009-SW-71-AD
- FR document: 2012-18254
- Official PDF: https://openairdocs.org/files/sha256/65/3f/653fd67ec21a976d20f438f9a21ece88f57f6110b834d0a03549783bb20550d1 (from https://www.govinfo.gov/content/pkg/FR-2012-07-26/pdf/2012-18254.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/07/26/2012-18254/airworthiness-directives-eurocopter-deutschland-gmbh-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1B6C578A9DF26C0E86257A470048E89A.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0773

## Summary

We propose to adopt a new airworthiness directive (AD) for the Eurocopter Deutschland GmbH (Eurocopter) Model MBB-BK 117 C-2 helicopters. This proposed AD is prompted by the discovery that some helicopters have blind rivets installed in the place of solid rivets in the long tail rotor drive shaft. The proposed actions are intended to detect blind rivets installed in the long tail rotor drive shaft, which could lead to failure of the tail rotor drive shaft and subsequent loss of control of the helicopter.

## Notices in this docket

- Jul 26, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-18254, comments due Sep 24, 2012 (https://www.federalregister.gov/documents/2012/07/26/2012-18254/airworthiness-directives-eurocopter-deutschland-gmbh-helicopters)

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