Bombardier's Global 7000 business jet, rear, is parked next to a Learjet 75.

The U.S. National Transportation Safety Board on Wednesday issued an urgent recommendation to operators of 10 Bombardier BBD-B-T Learjet airplanes models to ensure main landing gear are attached correctly.

The recommendation to the Federal Aviation Administration to mandate compliance manufacturer service bulletins on landing gear would cover 1,883 airplanes currently in service.

The recommendation stems from the investigation of a fatal Feb. 10 runway incident in Scottsdale, Ariz., involving a Learjet 35A, and three prior events in which Learjet landing gear disconnected from the airframe because a retaining bolt was not engaged through an aft pin. Please enable JavaScript to view this content.

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