Doors — Baggage Doorstop Fittings — Improperly Torqued Bolts
- Published
- Effective
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Bombardier BD-700-1A10 and BD-700-1A11 aircraft must perform a torque check of the specified bolts within 15 months of the AD's effective date, June 24, 2025. If any bolts fail the torque check, corrective actions including re-torquing, re-installation, or replacement must be carried out following the applicable Bombardier service bulletin instructions. Compliance with these steps is mandatory to continue legal operation of the aircraft.
Summary
Canadian Airworthiness Directive CF-2025-28 addresses improperly torqued bolts on baggage doorstop fittings for Bombardier Inc. model BD-700-1A10 and BD-700-1A11 aircraft, specifically serial numbers 60057, 60058, 60060 through 60063, and 60065 through 60121. The directive mandates inspection and corrective actions to ensure the structural integrity of these fittings. This AD aims to prevent potential fitting failures that could lead to cabin depressurization.
What changed
CF-2025-28 introduces a new requirement for operators of affected Bombardier BD-700-1A10 and BD-700-1A11 aircraft to perform torque checks on the bolts securing baggage doorstop fittings. If bolts fail the torque check, they must be re-torqued, re-installed, or replaced according to Bombardier service bulletins 700-52-5505, 700-52-6505, and 700-52-6013. This is a new regulation addressing an unsafe condition caused by improper torque application during assembly.
Why it matters
This directive is critical for aviation professionals because improperly torqued bolts on principal structural elements like baggage doorstop fittings can compromise aircraft structural integrity and safety. Operators and maintenance teams must ensure compliance to prevent potential bolt failure and cabin depressurization. Timely adherence to this AD helps maintain airworthiness and regulatory compliance under Canadian Aviation Regulations.
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