NTSB to investigate Southwest Airlines crash landing

The Southwest airplane, a Boeing 737, was carrying 150 passengers and airline employees, the company has said.

Southwest said on Monday evening that five passengers and three flight attendants were being treated for injuries because of the accident.

The launch of the NTSB's investigation comes on the heels of the agency's ongoing review of the crash landing of an Asiana Airlines airplane on July 6 in San Francisco.

Three passengers were killed and 180 others were injured in the Asiana crash.

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