Oct 29 (Reuters) - The National Transportation Safety

Board on Wednesday issued an urgent recommendation to operators

of 10 Bombardier 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 February

10 runway incident in Scottsdale, Arizona, 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.​​​​​​​