# Airworthiness Directives; Airbus Helicopters
> **Rule** · Final rule. · Published 2025-12-08 · Effective 2026-01-12 · 90 FR 56666
## Document
- **Document number:** 2025-22225
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 90 FR 56666
- **Publication date:** 2025-12-08
- **Effective date:** 2026-01-12
- **FAA docket:** Docket No. FAA-2025-1350
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model EC 155B and EC 155B1 helicopters. This AD was prompted by a determination that the required forces to jettison the windows exceed the maximum jettisoning effort requirements and the development of a modification of the jettisonable windows. This AD requires replacement of the jettisonable windows and seals on the sliding doors and fixed panels on the left-hand and right-hand sides. This AD also requires the installation of new labels. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/12/08/2025-22225/airworthiness-directives-airbus-helicopters)
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