Fuselage – Cracks on Aft Wing To Body Fairing (WTBF) Structure
Superseded. Comply with CF-2025-27, which replaces this document.
- Published
- Effective
- Deadline
- Replaces
- 2020-32
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must perform initial and repeat inspections of the aft WTBF structure, adjust tie-rod loads as specified, and apply repairs where cracks are found within defined compliance times based on aircraft groupings. They must also verify maintenance records for proper procedures and report inspection data to Airbus Canada Limited Partnership. The effective date for compliance is May 7, 2021, with specific inspection intervals detailed in the directive.
Summary
Airworthiness Directive CF-2020-32R1 is issued by Transport Canada and applies to Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500-1A11 aircraft. It addresses cracks found in the aft wing-to-body fairing (WTBF) structure, specifically around the tie-rod attachments at fuselage station 973. The directive mandates inspections, repairs, tie-rod load adjustments, and incorporation of reinforcement modifications to maintain structural integrity.
What changed
This revision supersedes AD CF-2020-32 by introducing requirements for a new reinforcement modification that strengthens the aft WTBF support structure. It updates inspection intervals and compliance procedures to reflect the availability of this reinforcement and revises maintenance publication requirements to prevent excessive tie-rod preload during installation.
Why it matters
The directive is critical for maintaining the structural integrity of the aft WTBF, preventing potential part departures, loss of radio altimeter functionality, and adverse effects on aircraft stability and performance. Compliance ensures continued airworthiness and safety of affected Airbus Canada Limited Partnership aircraft models, protecting operators from unplanned maintenance and operational disruptions.
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New ADs and bulletins for Airbus BD-500 (A220 Series), Canada BD-500-1A10 and Canada BD-500-1A11, summarized like this page, every Monday.