EDWARDS AIR FORCE BASE, Calif. (AP) _ A cargo plane leased by the Navy crashed Monday on a runway at Edwards Air Force Base, killing two of nine people on board, officials said.

The other seven passengers were taken to hospitals, and six were listed in serious condition.

The MU-2, a military cargo version of a twin-turboprop Mitsubishi business aircraft, crashed at 12:30 p.m., said Tech. Sgt. Melvin L. Wilson, a spokesman at the base's Flight Test Center.

The airplane, carrying civilians as well as Navy personnel, was on a test mission from the nearby Naval Air Weapons Station at China Lake.

''We don't know if it was trying to land or trying to take off,'' Wilson said.

China Lake spokeswoman Cathy Partusch said she didn't know the nature of the test mission or what contractor had leased the plane to the Navy.

None of the passengers' names were immediately released.

Edwards is in the Mojave Desert about 70 miles north of Los Angeles.