# Proposed AD FAA-2012-0356: Eurocopter Deutschland GmbH Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-14-14
- Products: Eurocopter Deutschland
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 4, 2012, 77 FR 20321
- Comments due: May 4, 2012
- Became: [AD 2012-14-14](https://openairdocs.org/ad/2012-14-14)
- Docket: FAA-2012-0356 (https://www.regulations.gov/docket/FAA-2012-0356, where comments are filed)
- Project: 2011-SW-067-AD
- FR document: 2012-8064
- Official PDF: https://openairdocs.org/files/sha256/71/1b/711b544ccfa3129a12d3d351ab6c9f1cd547688c7430ae34fde6dcf986ac266f (from https://www.govinfo.gov/content/pkg/FR-2012-04-04/pdf/2012-8064.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/04/04/2012-8064/airworthiness-directives-eurocopter-deutschland-gmbh-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0CD9A82F2CC50759862579D60040F607.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0356

## Summary

We are proposing a new airworthiness directive (AD) for all Eurocopter Deutschland GmbH (ECD) MBB-BK 117 A-3, MBB-BK 117 A-4, MBB- BK B-1, MBB-BK 117 B-2, and MBB-BK C-1 helicopters equipped with a certain external-hoist system (hoist system) by requiring either deactivating the entire hoist system or deactivating the hoist system cable cutter function on the hoist system operator control handle (operator handle). This AD was prompted by an uncommanded activation of the hoist cable cutter function on an MBB-BK117 C-1 helicopter. This AD is intended to prevent uncommanded cutting of the hoist cable and subsequent injury to persons being lifted by the hoist.

## Notices in this docket

- Apr 4, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-8064, comments due May 4, 2012 (https://www.federalregister.gov/documents/2012/04/04/2012-8064/airworthiness-directives-eurocopter-deutschland-gmbh-helicopters)

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