What kind of a plane was it that crashed? [originaltext] Washington--A sight

Washington--A sightseeing plane crashed on Wednesday evening in Tsku Inley, Alaska, killing at least three people, authorities said. Reports from Juneau, Alaska, said four other people were missing from the fatal crash of the single-engine float-plane-a plane equipped with pontoons or floats for landing on water.  The plane, with 10 passengers aboard, crashed and sank into sea, the coast guard said.