EASA AD CF-2020-40: Fuselage — Understrength Floor Attachment Structure beneath Galley 2 at Fuselage Station 389.90 | RegNotify

Airworthiness DirectiveEASA AD CF-2020-40

Fuselage — Understrength Floor Attachment Structure beneath Galley 2 at Fuselage Station 389.90

Published: Oct 19, 2020
Effective: Oct 29, 2020
Deadline: Oct 29, 2023

AI-generated summary of the official EASA document. Verify against the PDF before acting.

What to do

Operators of affected CL-600-2D15 and CL-600-2D24 aircraft must modify the floor structure as specified in MHI RJ Aviation Service Bulletin 670BA-53-060 or approved revisions. The modification must be completed within 36 months from the effective date of 29 October 2020. Coordination with Transport Canada and adherence to approved procedures is required.

Summary

Canadian Airworthiness Directive CF-2020-40 addresses a structural deficiency in the fuselage floor attachment beneath Galley 2 at fuselage station 389.90 on MHI RJ Aviation ULC model CL-600-2D15 and CL-600-2D24 aircraft. The directive mandates a modification to strengthen the floor structure to meet certification requirements. This applies specifically to certain serial numbers of these regional jet models.

What changed

CF-2020-40 introduces a new mandatory modification requiring reinforcement of the floor structure between fuselage stations 379.00 and 394.00 at right buttock line 37.75. This modification is detailed in MHI RJ Aviation Service Bulletin 670BA-53-060 and aims to correct an understrength condition discovered during a design review. The directive establishes compliance requirements and deadlines for affected aircraft.

Why it matters

This directive is critical for maintaining structural integrity beneath Galley 2, ensuring occupant safety during flight and emergency landings. Failure to comply could result in structural failure that may cause injury or impede emergency egress. Operators, maintenance organizations, and compliance teams must address this to meet regulatory standards and maintain airworthiness.

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