# Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France)
> **Rule** · Final rule; request for comments. · Published 2015-01-15 · Effective 2015-01-30 · 80 FR 1997
## Document
- **Document number:** 2015-00543
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 80 FR 1997
- **Publication date:** 2015-01-15
- **Effective date:** 2015-01-30
- **FAA docket:** Docket No. FAA-2014-1058
## Abstract

We are adopting a new airworthiness directive (AD) for Airbus Helicopters (previously Eurocopter France) Model EC155B1 and AS 365 N3 helicopters with a certain automated flight control system (AFCS) and with a Garmin global positioning system (GPS) installed. This AD requires revising the Rotorcraft Flight Manual (RFM) to prohibit using the autopilot coupled with a Localizer/Instrument Landing System (LOC/ ILS) or Very High Frequency Omnidirectional Range (VOR) approach. This AD is prompted by a report of unpredictable and unexpected roll oscillations during coupled LOC or VOR approaches.This condition, if not corrected, could result in loss of helicopter control.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2015/01/15/2015-00543/airworthiness-directives-airbus-helicopters-previously-eurocopter-france)
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