NEW YORK - The National Transportation Safety Board says it is conducting a full investigation into a hard nose gear landing at LaGuardia Airport yesterday.

Officials say the nose gear of Southwest Airlines flight 345, a Boeing 747 arriving from Nashville, Tenn., collapsed Monday after the plane touched down.

Michael Candors, a former pilot who teaches at Farmingdale State College, says the NTSB has a lot of work ahead. He says officials will look at the landing gear and thoroughly interview the pilots and crew.

An FAA database shows that there were 11 cases of landing gear problems with Boeing 737s over the last 10 years.

The aircraft's cockpit voice recorder arrived at the NTSB's Washington, D.C. lab earlier today.

LaGuardia was closed following the incident, but operations have since returned to normal.