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Notice of proposed rulemaking (NPRM).

We propose to adopt a new airworthiness directive (AD) for certain Piper Aircraft, Inc. Model PA-31-350 airplanes. This proposed AD was prompted by a report of an engine fire caused by a leak in the fuel pump inlet hose. This proposed AD would require inspecting the fuel hose assembly and the turbocharger support assembly for proper clearance between them, inspecting each assembly for any sign of damage, and making any necessary repairs or replacements. We are proposing this AD to correct the unsafe condition on these products.

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