Windows — Jettisoning System — Installation
Superseded. Comply with 2021-0012R1, which replaces this document.
- Published
- Effective
- Deadline
- Replaces
- 2018-0039
- Replaces
- 2016-0049
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected AS 332 and EC 225 LP helicopters must install PTFE skived film on window frames for Group 1 helicopters or remove PTFE film and polychloroprene seals and install silicone seals for Group 2 VIP helicopters within the compliance times specified in the applicable Airbus Helicopters Alert Service Bulletins. Installation or replacement of jettisonable windows must include the appropriate seal installation from 23 February 2018 onward. Compliance deadlines vary based on operational environment as defined in the referenced service bulletins.
Summary
EASA Airworthiness Directive 2018-0039R1 is a regulatory document addressing the installation of the windows jettisoning system on Airbus Helicopters AS 332 and EC 225 LP models. It mandates modifications to reduce friction between the window seal and the helicopter airframe to ensure proper jettisoning of windows in emergency situations. The directive applies to various AS 332 and EC 225 LP helicopter variants, excluding those already modified according to specified Airbus Helicopters modifications and Alert Service Bulletins.
What changed
This revision of EASA AD 2018-0039 excludes helicopters that have already been modified with specific Airbus Helicopters modifications from the applicability. It retains previous requirements for installing PTFE skived film on Group 1 helicopters and silicone seals on Group 2 VIP configuration helicopters, updating compliance instructions and referencing additional Alert Service Bulletins. The revision clarifies compliance and parts installation requirements to restore window jettisoning system performance to the approved design standard.
Why it matters
This directive is critical for aviation professionals as it addresses a safety issue where excessive friction could prevent the jettisoning of helicopter windows, potentially hindering occupant evacuation during emergencies. Operators and maintenance teams must ensure compliance to maintain airworthiness and safety standards. Failure to comply could result in unsafe conditions and regulatory non-conformance, impacting operational readiness and certification.
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