# Proposed AD FAA-2013-0340: Eurocopter Deutschland GmbH Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-21-06
- Products: Eurocopter Deutschland
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 15, 2013, 78 FR 22209
- Comments due: June 14, 2013
- Became: [AD 2013-21-06](https://openairdocs.org/ad/2013-21-06)
- Docket: FAA-2013-0340 (https://www.regulations.gov/docket/FAA-2013-0340, where comments are filed)
- Project: 2010-SW-081-AD
- FR document: 2013-08760
- Official PDF: https://openairdocs.org/files/sha256/55/3a/553a2604fe4b94d34b2cb648a22894c600b936953410278a628b8a686bee7d60 (from https://www.govinfo.gov/content/pkg/FR-2013-04-15/pdf/2013-08760.pdf)
- Federal Register: https://www.federalregister.gov/documents/2013/04/15/2013-08760/airworthiness-directives-eurocopter-deutschland-gmbh-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D8CB684688F4FD9586257B4E004F0888.0001
- Page: https://openairdocs.org/proposed/FAA-2013-0340

## Summary

We propose to adopt a new airworthiness directive (AD) for Eurocopter Deutschland GmbH (Eurocopter) Model EC135 P1, EC135 P2, EC135 P2+, EC135 T1, EC135 T2, EC135 T2+, and MBB-BK 117 C-2 helicopters with a certain external mounted hoist system (hoist) with boom support assembly (boom) installed. This proposed AD would require inspecting the boom for a crack and, if a crack exists, replacing the boom with an airworthy boom. This proposed AD is prompted by cracks found on the boom during a pre-flight check of a hoist on an MBB-BK 117 C-2 helicopter. The proposed actions are intended to detect a crack and prevent failure of the boom, loss of the boom and attached loads, and subsequent loss of helicopter control.

## Notices in this docket

- Apr 15, 2013: Notice of proposed rulemaking (NPRM). (first notice), FR document 2013-08760, comments due Jun 14, 2013 (https://www.federalregister.gov/documents/2013/04/15/2013-08760/airworthiness-directives-eurocopter-deutschland-gmbh-helicopters)

---
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.