Fuselage — Non-Destructive Testing Manual — Revision of Calibration Standards for Ultrasonic Inspection Procedures
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of MHI RJ Aviation ULC CL-600-2B19 aircraft must perform the specified Airworthiness Limitations and Structural Deviation Inspection Requirements using the revised ultrasonic inspection procedures by the effective date of December 5, 2023. If inspections were previously done with older procedures, repeat inspections must be completed within specified flight cycle limits. Use of outdated procedures is prohibited from the effective date onward.
Summary
Airworthiness Directive CF-2023-74 is issued by Transport Canada and applies to all serial numbers of the MHI RJ Aviation ULC model CL-600-2B19 aeroplanes. This directive addresses revisions to the Non-Destructive Testing Manual Part 4 Ultrasonic Inspection Procedures for fuselage inspections. It mandates updated calibration standards to improve crack detection during structural inspections.
What changed
CF-2023-74 prohibits the use of previous ultrasonic inspection procedures that lacked faying surface sealant in calibration reference standards, which could fail to detect cracks. The directive introduces revised Non-Destructive Testing Manual Part 4 procedures with new calibration reference standards that include faying surface sealant. It also specifies updated inspection tasks and intervals for affected fuselage components.
Why it matters
This directive is critical for aviation professionals because undetected cracks in fuselage structures can lead to structural failure and compromise flight safety. Operators and maintenance organizations must ensure compliance with the revised inspection procedures to maintain airworthiness. The directive also clarifies compliance requirements and phase-in periods to facilitate proper implementation.
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