# Airworthiness Directives; Leonardo S.p.a. Helicopters
> **Rule** · Final rule. · Published 2024-07-09 · Effective 2024-08-13 · 89 FR 56191
## Document
- **Document number:** 2024-14890
- **Category:** airworthiness
- **Manufacturer:** Leonardo S.p.a.
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 89 FR 56191
- **Publication date:** 2024-07-09
- **Effective date:** 2024-08-13
- **FAA docket:** Docket No. FAA-2024-0236
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Leonardo S.p.a. Model AW189 helicopters. This AD was prompted by a report of abnormal oscillatory behavior during automated glide slope approaches, due to sealant on the glide slope (G/S) antenna coaxial connectors. This AD requires visually inspecting certain G/S antennas and G/S antenna coaxial connectors for the presence of any sealant; cleaning parts and removing any sealant; performing an external G/S acceptance test procedure (ATP); and taking corrective actions if necessary. This AD would also prohibit installing certain G/S antennas and G/S antenna coaxial connecters. These requirements are specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2024/07/09/2024-14890/airworthiness-directives-leonardo-spa-helicopters)
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