# Airworthiness Directives; Airbus Helicopters
> **Rule** · Final rule; request for comments. · Published 2017-04-21 · Effective 2017-05-08 · 82 FR 18690
## Document
- **Document number:** 2017-07777
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 82 FR 18690
- **Publication date:** 2017-04-21
- **Effective date:** 2017-05-08
- **FAA docket:** Docket No. FAA-2016-4674
## Abstract

We are superseding Emergency Airworthiness Directive (Emergency AD) 2015-24-51 for Airbus Helicopters Model EC120B. Emergency AD 2015-24-51 required inspections of the air conditioning system. This supersedure revises the applicability, some of the terminology, and the inspection requirements. This AD was prompted by a report of an abnormal noise during flight of a Model EC120B helicopter that resulted in a precautionary landing. We are issuing this AD to prevent an unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/04/21/2017-07777/airworthiness-directives-airbus-helicopters)
---
*AI Analytics · CC0 1.0*