AD 2021-17-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Canada Model BD-500-1A10 and BD-500-1A11 | Airworthiness Directives; Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes |
| aircraft | Bombardier | Various | Airworthiness Directives; Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes |
Unsafe Condition
A twisted MF flexible fuel line in the shroud can restrict the flow of fuel of the MF and cause fuel imbalance and possible damage including abrasion to the shroud assembly and fuel line, resulting in a fuel leak; as a result, the electrical harness connectors in the wing area are a potential ignition source and pose a risk of fire.
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Required Actions
Inspecting for damage of the left and right MF fuel line assemblies (including the flexible-hose and shroud assemblies), and replacing damaged parts, as specified in TCCA AD CF-2021-09, which is incorporated by reference.
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Compliance Time
Before further flight
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Affected Aircraft
Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500-1A11 airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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