# Airworthiness Directives; Eurocopter Deutschland GmbH Helicopters
> **Rule** · Final rule. · Published 2014-01-27 · Effective 2014-03-03 · 79 FR 4267
## Document
- **Document number:** 2014-00837
- **Category:** airworthiness
- **Manufacturer:** Eurocopter Deutschland GmbH
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 79 FR 4267
- **Publication date:** 2014-01-27
- **Effective date:** 2014-03-03
- **FAA docket:** Docket No. FAA-2013-0634
## Abstract

We are adopting a new airworthiness directive (AD) for certain Eurocopter Deutschland GmbH (Eurocopter) Model EC135P2+ and EC135T2+ helicopters. This AD requires inspecting the mechanical air conditioning system compressor bearing block upper bearing (upper bearing) for corrosion, leaking grease, condensation, or water. This AD was prompted by metallic debris from an upper bearing found in the air inlet areas of both engines in a Model EC135P2+ helicopter. The actions of this AD are intended to prevent metallic debris from damaging the engine, causing loss of engine power, and subsequent loss of helicopter control.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/01/27/2014-00837/airworthiness-directives-eurocopter-deutschland-gmbh-helicopters)
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