# Proposed AD FAA-2017-0404: Airbus Helicopters (Previously Eurocopter France)

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-09-01
- Products: Airbus Helicopters
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 31, 2019, 84 FR 72254
- Comments due: March 2, 2020
- Became: [AD 2020-09-01](https://openairdocs.org/ad/2020-09-01)
- Docket: FAA-2017-0404 (https://www.regulations.gov/docket/FAA-2017-0404, where comments are filed)
- FR document: 2019-27978
- Official PDF: https://openairdocs.org/files/sha256/ac/95/ac957874e97a7e35fda9fc42af11a202526f32b9bfebf96ecbb4041e5927893a (from https://www.govinfo.gov/content/pkg/FR-2019-12-31/pdf/2019-27978.pdf)
- Federal Register: https://www.federalregister.gov/documents/2019/12/31/2019-27978/airworthiness-directives-airbus-helicopters-previously-eurocopter-france
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DAE3B85001C9E596862584E1004E9D99.0001
- Page: https://openairdocs.org/proposed/FAA-2017-0404

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2008-24-04 for Eurocopter France (now Airbus Helicopters) Model AS355E, AS355F, AS355F1, AS355F2, and AS355N helicopters. AD 2008-24-04 requires repetitively inspecting the lubricating pump and checking the magnetic chip detector plug (chip detector) and the main gearbox (MGB) oil-sight glass. Since the FAA issued AD 2008-24-04, Airbus Helicopters has developed an alteration of the MGB oil flow distribution that corrects the unsafe condition. This proposed AD would retain the requirements of AD 2008-24-04 and would allow the option of altering the MGB oil flow distribution as a terminating action for the inspections. The actions of this proposed AD are intended to address an unsafe condition on these products.

## Notices in this docket

- Dec 31, 2019: Notice of proposed rulemaking (NPRM). (first notice), FR document 2019-27978, comments due Mar 2, 2020 (https://www.federalregister.gov/documents/2019/12/31/2019-27978/airworthiness-directives-airbus-helicopters-previously-eurocopter-france)

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