# Airworthiness Directives; Airbus Helicopters Deutschland GmbH (Type Certificate Previously Held by Eurocopter Deutschland GmbH Helicopters) (AHD)
> **Rule** · Final rule; request for comments. · Published 2014-07-15 · Effective 2014-07-30 · 79 FR 41095
## Document
- **Document number:** 2014-15527
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 79 FR 41095
- **Publication date:** 2014-07-15
- **Effective date:** 2014-07-30
- **FAA docket:** Docket No. FAA-2014-0440
## Abstract

We are adopting a new airworthiness directive (AD) for AHD Model EC135P1, P2, P2+, T1, T2, and T2+ helicopters. This AD requires repetitive visual inspections of the ring frame X9227 for a crack and, if there is a crack, replacing the ring frame before further flight. This AD is prompted by a fatigue crack in the ring frame. These actions are intended to detect a crack in the ring frame and prevent loss of the tail rotor and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/07/15/2014-15527/airworthiness-directives-airbus-helicopters-deutschland-gmbh-type-certificate-previously-held-by)
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