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Notice of proposed rulemaking (NPRM).

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes. This proposed AD was prompted by reports of low clearance between the variable frequency generator (VFG) power feeder cables and adjacent hydraulic lines and/or fuel lines in the aft equipment bay, which could cause chafing damage. This proposed AD would require modifying the routing of the VFG power feeder cables and harnesses in the aft equipment bay. We are proposing this AD to address the unsafe condition on these products.

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