Airworthiness Directives; Bombardier, Inc., Airplanes
Published Date: 7/30/2026
Rule
Summary
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model BD-700-1A10 and BD-700-1A11 airplanes. This AD was prompted by an in-service event where a main landing gear tire burst upon landing. This AD requires an inspection to determine if an affected brake control unit (BCU) is installed and replacement of affected BCUs. This AD also prohibits the installation of affected parts. The FAA is issuing this AD to address the unsafe condition on these products.
Analyzed Economic Effects
3 provisions identified: 0 benefits, 3 costs, 0 mixed.
Required replacement of affected BCUs
If an affected brake control unit (BCU) is found on a Bombardier BD-700-1A10 or BD-700-1A11 airplane, the FAA requires that the affected BCUs be replaced. The replacement requirement is part of the airworthiness directive issued to address the unsafe condition observed after a landing tire burst.
Mandatory inspection for certain Bombardier BCUs
The FAA requires operators of Bombardier Model BD-700-1A10 and BD-700-1A11 airplanes to perform an inspection to determine whether an affected brake control unit (BCU) is installed. This action follows an in-service event in which a main landing gear tire burst upon landing.
Prohibition on installing affected parts
The AD prohibits installation of the affected brake control units (BCUs) on Bombardier Model BD-700-1A10 and BD-700-1A11 airplanes. Operators may not install the specified affected parts as long as the directive is in effect.
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