# Proposed AD FAA-2010-0909: Erickson Air-Crane Incorporated Model S-64F Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2011-21-12
- Products: Erickson Air-Crane
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 16, 2010, 75 FR 56487
- Comments due: November 15, 2010
- Became: [AD 2011-21-12](https://openairdocs.org/ad/2011-21-12)
- Docket: FAA-2010-0909 (https://www.regulations.gov/docket/FAA-2010-0909, where comments are filed)
- Project: 2010-SW-026-AD
- FR document: 2010-23097
- Official PDF: https://openairdocs.org/files/sha256/8d/8d/8d8dc87423ec2acd8171d35c34fe15017883b3bcc43750d9509b753e7e3dd547 (from https://www.govinfo.gov/content/pkg/FR-2010-09-16/pdf/2010-23097.pdf)
- Federal Register: https://www.federalregister.gov/documents/2010/09/16/2010-23097/airworthiness-directives-erickson-air-crane-incorporated-model-s-64f-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/18BFDD8FD9905BBF862577A0004781F0.0001
- Page: https://openairdocs.org/proposed/FAA-2010-0909

## Summary

This document proposes adopting a new airworthiness directive (AD) for Erickson Air-Crane Incorporated (Erickson Air-Crane) Model S- 64F helicopters. The AD would require, at specified intervals, certain inspections of the rotating swashplate assembly (swashplate) for a crack. If a crack is found, this AD would also require, before further flight, replacing the swashplate with an airworthy swashplate. This proposal is prompted by a report from the manufacturer of a swashplate cracking during fatigue testing. The actions specified by the proposed AD are intended to prevent loss of a swashplate due to a fatigue crack, loss of control of the main rotor system, and subsequent loss of control of the helicopter.

## Notices in this docket

- Sep 16, 2010: Notice of proposed rulemaking (NPRM). (first notice), FR document 2010-23097, comments due Nov 15, 2010 (https://www.federalregister.gov/documents/2010/09/16/2010-23097/airworthiness-directives-erickson-air-crane-incorporated-model-s-64f-helicopters)

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