Airworthiness DirectiveEASA AD CF-2022-05

Pneumatic — Air System — Wing Ice Protection System (WIPS) Duct Clearance Low Through Fuselage

Published: Mar 10, 2022
Effective: Mar 10, 2022
Deadline: Dec 10, 2023

Bombardier BD-700 2A12

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

What to do

Operators of affected Bombardier BD-700-2A12 aircraft must inspect the WIPS bleed air ducts and surrounding structure within 21 months from March 10, 2022. If clearance is below the minimum required, the ducts must be adjusted and any damage repaired before further flight. Compliance must follow the instructions in Bombardier Service Bulletin 700-36-7502 or later approved revisions.

Summary

The Canadian Airworthiness Directive CF-2022-05 addresses the Pneumatic Air System Wing Ice Protection System (WIPS) duct clearance issue on Bombardier Inc. model BD-700-2A12 aircraft, specifically serial numbers 70006, 70007, 70009 through 70019, 70021 through 70029, and 70031. This directive mandates inspection and adjustment of the bleed air ducts supplying the WIPS in the rear fuselage to ensure proper clearance and prevent potential bleed air leaks. The directive aims to maintain the structural integrity of the aircraft by preventing heat stress damage caused by undetected leaks.

What changed

CF-2022-05 introduces a new requirement for inspecting the clearance between the WIPS bleed air ducts and surrounding fuselage structure on specified Bombardier BD-700-2A12 aircraft. It requires corrective actions including adjustment of ductwork and repair of any damage found, following Bombardier Service Bulletin 700-36-7502. This is a new regulation addressing a production-discovered clearance issue rather than an amendment to a previous directive.

Why it matters

This directive is critical for aviation professionals because insufficient clearance in the WIPS bleed air ducts can lead to undetected bleed air leaks, which may cause heat stress and compromise the aircraft's structural integrity. Operators, maintenance organizations, and compliance teams must ensure timely inspections and repairs to avoid safety risks and regulatory non-compliance. Proper adherence helps maintain aircraft airworthiness and operational safety.

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