WASHINGTON (AP) – An official with the National Transportation Safety Board says just before a jet crashed into a Maryland  home, killing six, it slowed to just over 100 miles per hour and its computers began sounding an alarm about an impending aerodynamic stall.

NTSB member Robert Sumwalt said at a news conference Tuesday that a preliminary review of the plane's flight data recorder showed the alarm, which meant the plane would no longer be generating enough lift to remain airborne.

A mother and her two young sons, one of them just a month old, were killed when the jet crashed into their two-story wood-frame home in Gaithersburg, Maryland. Three men aboard the plane, all from North Carolina, were also killed in Monday's crash.

There was no indication of engine trouble, Sumwalt said.

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