EASA AD CF-2021-47
Fuselage — Pressure Floor Skin — Non Destructive Testing Manual CSP A-010 Part 6 Procedure Number 53-41-194
Summary
The Airworthiness Directive CF-2021-47 titled 'Fuselage — Pressure Floor Skin — Non Destructive Testing Manual CSP A-010 Part 6 Procedure Number 53-41-194' applies to MHI RJ Aviation ULC model CL-600-2B19 aircraft, serial numbers 7003 through 8079, with specific service bulletins incorporated. It mandates updated non-destructive testing procedures for the fuselage pressure floor skin to ensure continued airworthiness. This directive is issued under Canadian Aviation Regulation 521.427 and addresses inspection procedures related to added doublers at fuselage stations FS460 and FS513.
What Changed
This directive prohibits the use of the previous NDTM Part 6 procedure number 53-41-194 dated 10 October 2020 and earlier revisions, replacing them with a revised procedure dated 5 March 2021. The updated procedure corrects deficiencies in the earlier inspection methods to cover all required inspections in the affected fuselage areas. It supersedes the inspection requirements previously mandated by AD CF-2002-39R2 for the affected areas.
Why It Matters
For aviation professionals, this directive ensures that inspections of the fuselage pressure floor skin are thorough and up to date, addressing potential safety risks from incomplete inspections. Operators and maintenance organizations must comply to maintain aircraft airworthiness and avoid regulatory violations. Using the correct inspection procedures helps prevent structural issues that could compromise flight safety.
What To Do
Affected operators must use the revised NDTM Part 6 procedure number 53-41-194 dated 5 March 2021 when performing the associated Airworthiness Limitation task. The use of earlier versions of this procedure is prohibited from the effective date of 27 December 2021. Alternative inspection methods may only be used if approved by Transport Canada Civil Aviation as an alternative means of compliance.
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