sentences:  The MacGregor expedition took with them a 1933 model Waco biplane for surveying and exploration.The aircraft had a single, 210 horsepower (hp), Continental air-cooled rotary engine.Schlossbach flew the Waco four times from Etah marking several memorable aviation accomplishments; the first solo flight over Ellesmere Island; the first landing on Ellesmere Island; and the refuting of Perry’s claim that there was another island northwest of Ellesmere Island.