# Proposed AD FAA-2012-0887: Eurocopter Deutschland GmbH Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-16-13
- Products: Eurocopter Deutschland
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 29, 2012, 77 FR 52265
- Comments due: October 29, 2012
- Became: [AD 2013-16-13](https://openairdocs.org/ad/2013-16-13)
- Docket: FAA-2012-0887 (https://www.regulations.gov/docket/FAA-2012-0887, where comments are filed)
- Project: 2009-SW-02-AD
- FR document: 2012-21284
- Official PDF: https://openairdocs.org/files/sha256/17/59/17592bc344db0d7754aea71bb2ca6ba0999bfcc7dab80fc70f4a22bdbb53f407 (from https://www.govinfo.gov/content/pkg/FR-2012-08-29/pdf/2012-21284.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/08/29/2012-21284/airworthiness-directives-eurocopter-deutschland-gmbh-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8BD3B1E4D59DA7DA86257A69004C40EE.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0887

## Summary

We propose to adopt a new airworthiness directive (AD) for Eurocopter Deutschland GmbH (ECD) Model BO-105A, BO-105C, BO-105S, BO- 105LS A-1, BO-105LS A-3, MBB-BK 117 A-1, MBB-BK 117 A-3, MBB-BK 117 A- 4, MBB-BK 117 B-1, MBB-BK-117 B-2, and MBB-BK 117 C-1 helicopters to require inspections for corrosion or thread damage to each tail rotor balance weight (weight) and each tail rotor control lever (lever). This proposed AD is prompted by a European Aviation Safety Agency (EASA) AD and a Transport Canada Civil Aviation (TCCA) AD, both issued based on a report that corrosion was detected on a weight in the area of the attachment thread on a model BO-105 helicopter. The proposed actions are intended to detect corrosion and thread damage in the threaded area of the weight and lever, and to prevent failure of a weight or lever, separation of tail rotor parts, severe vibration, and subsequent loss of control of the helicopter.

## Notices in this docket

- Aug 29, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-21284, comments due Oct 29, 2012 (https://www.federalregister.gov/documents/2012/08/29/2012-21284/airworthiness-directives-eurocopter-deutschland-gmbh-helicopters)

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