# Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France) Helicopters
> **Rule** · Final rule. · Published 2016-03-04 · Effective 2016-04-08 · 81 FR 11407
## Document
- **Document number:** 2016-04678
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 81 FR 11407
- **Publication date:** 2016-03-04
- **Effective date:** 2016-04-08
- **FAA docket:** Docket No. FAA-2015-2568
## Abstract

We are superseding Airworthiness Directive (AD) 2014-07-52 for certain Airbus Helicopters (previously Eurocopter France) Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters. AD 2014-07- 52 required repetitively inspecting certain reinforcement angles of the rear structure to tailboom junction frame (reinforcement angles) for a crack at 10 hour time-in-service (TIS) intervals, repairing any cracked reinforcement angle, and allowed an optional repetitive inspection with a 165 hour TIS inspection interval as a terminating action for the 10 hour TIS inspections. This AD retains the inspection requirements of AD 2014-07-52 and requires the inspection of the area around each reinforcement angle screw hole as terminating action to the 10 hour TIS inspections. We are issuing this AD to detect a crack in the reinforcement angle, which if not corrected, could result in loss of the tailboom and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/03/04/2016-04678/airworthiness-directives-airbus-helicopters-previously-eurocopter-france-helicopters)
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