# Proposed AD FAA-2013-0020: Eurocopter Deutschland GmbH (ECD) Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-16-20
- Products: Eurocopter Deutschland
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 22, 2013, 78 FR 23696
- Comments due: June 21, 2013
- Became: [AD 2013-16-20](https://openairdocs.org/ad/2013-16-20)
- Docket: FAA-2013-0020 (https://www.regulations.gov/docket/FAA-2013-0020, where comments are filed)
- Project: 2010-SW-107-AD
- FR document: 2013-09410
- Official PDF: https://openairdocs.org/files/sha256/f6/8a/f68a1fe0f5770374e69f60bb4562aa4cdabeb41b3bead6821a62a242039d7b9d (from https://www.govinfo.gov/content/pkg/FR-2013-04-22/pdf/2013-09410.pdf)
- Federal Register: https://www.federalregister.gov/documents/2013/04/22/2013-09410/airworthiness-directives-eurocopter-deutschland-gmbh-ecd-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CFCF0ABEAEF70B8786257B550054D691.0001
- Page: https://openairdocs.org/proposed/FAA-2013-0020

## Summary

We propose to adopt a new airworthiness directive (AD) for ECD Model MBB-BK 117 C-2 helicopters. This proposed AD would require inspecting the rigging of the power-boosted control system and, if there is a nonparallel gap between the rigging wedges and the inner sleeves, performing a rigging procedure. This proposed AD is prompted by the discovery, during rigging of the main rotor controls, of movement of the longitudinal main rotor actuator piston after shut-down of the external pump drive. Such movement could cause incorrect rigging results. The proposed actions are intended to prevent incorrect rigging results, which could impair freedom of movement of the upper controls and subsequent reduced control of the helicopter.

## Notices in this docket

- Apr 22, 2013: Notice of proposed rulemaking (NPRM). (first notice), FR document 2013-09410, comments due Jun 21, 2013 (https://www.federalregister.gov/documents/2013/04/22/2013-09410/airworthiness-directives-eurocopter-deutschland-gmbh-ecd-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.