LOUISVILLE, Ky. — Federal aviation officials added more Boeing Company models to an emergency directive Friday, following the deadly crash at the UPS global aviation hub in Kentucky.

The Emergency Airworthiness Directive, previously issued Nov. 8 for McDonnell Douglas MD-11 planes, now include the older McDonnell Douglas DC-10 aircraft.

"The FAA is issuing this emergency AD because the agency has determined the unsafe condition described previously is likely to exist or develop in other products of the same type design," the directive said.

The order keeps the planes from being flown until they are inspected.

DC-10 aircraft are mostly retired and now only eight are in operation, working as water bombers, tankers and cargo holders, according to Simple Flying . This updated directi

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