# Proposed AD FAA-2010-0780: Eurocopter Deutschland GmbH (ECD) Model MBB-BK 117 C-2 Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2010-22-07
- Products: Eurocopter Deutschland
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 11, 2010, 75 FR 48617
- Comments due: September 10, 2010
- Became: [AD 2010-22-07](https://openairdocs.org/ad/2010-22-07)
- Docket: FAA-2010-0780 (https://www.regulations.gov/docket/FAA-2010-0780, where comments are filed)
- Project: 2009-SW-68-AD
- FR document: 2010-19817
- Official PDF: https://openairdocs.org/files/sha256/c2/a9/c2a90c13bd098c8c2cf4206654fe91c2bf55796d53d20baa2b41dc3e82d4a56a (from https://www.govinfo.gov/content/pkg/FR-2010-08-11/pdf/2010-19817.pdf)
- Federal Register: https://www.federalregister.gov/documents/2010/08/11/2010-19817/airworthiness-directives-eurocopter-deutschland-gmbh-ecd-model-mbb-bk-117-c-2-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DDF862BB5A84EF798625777C0051D7B1.0001
- Page: https://openairdocs.org/proposed/FAA-2010-0780

## Summary

We propose to supersede an existing airworthiness directive (AD) for ECD Model MBB-BK 117 C-2 helicopters. This proposed AD results from a mandatory continuing airworthiness information (MCAI) AD issued by the European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community. The MCAI AD states there was an in-flight incident in which a dynamic weight broke off the control lever leading to considerable vibrations. A visual inspection revealed that the threaded bolt of the control lever had broken off. The proposed actions are intended to prevent separation of dynamic weights, severe vibration, and subsequent loss of control of the helicopter.

## Notices in this docket

- Aug 11, 2010: Notice of proposed rulemaking (NPRM). (first notice), FR document 2010-19817, comments due Sep 10, 2010 (https://www.federalregister.gov/documents/2010/08/11/2010-19817/airworthiness-directives-eurocopter-deutschland-gmbh-ecd-model-mbb-bk-117-c-2-helicopters)

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