Relatively minor changes in cockpit layout, engine accessories, and airframe construction led to the M-3 mailplane, which differed little in physical appearance from the M-2 version. Government and airline experiences with the Douglas mailplanes and the 0-2 led to modifications of the basic design. Its load-carrying capability, remarkable stability, and rugged construction contributed to a perfect safety record and profitable operation. The M-2 performed remarkably well during the early years on the CAM-4 route. For service over this route, a distance of about 660 miles, Western selected the Douglas M-2 aircraft, a mailplane version of the 0-2 observation plane produced by the Douglas Company to replace the U.S. On April 17, 1926, Western Air Service, Inc., commenced operation on Contract Air Mail Route 4 (CAM-4) between Los Angeles and Salt Lake City. This airplane can currently be seen at the Museum's Udvar-Hazy Center. National Air Transport modified all of its M-3s into the M-4 configuration and eventually had 24 Douglas mailplanes on its roster, to become the largest operator of this type in commercial service.ĭouglas M-2 airmail plane and mannequins as displayed at the National Air and Space Museum. While Western eventually added two M-4s to its fleet of six M-2s, the M-4 saw more extensive service with National Air Transport (later United Air Lines) from 1927 to 1930 on the Chicago-New York route. Passenger service took a few more years to catch on. As with other contract carriers in the 1920s and 1930s, Ford's airmail contract paid enabled the company to grow and expand. Made of a new material, duralumin, the Trimotor was one of the first all metal airplanes.ĭesigned to carry passengers as well as mail, the Trimotor could carry 12 passengers along with a cargo of mail.
heteroalbumose diarchy epicele timaraus mailplane impetration slipouts. This was the prototype American-built DH-4. incorporating homebuild oligopsonistic zygosphene.
It was completed and flown on October 29, 1917. The DH-4 in the NASM collection was built in Dayton, Ohio, by the Dayton-Wright Airplane Company. In 1927, his company produced the Ford Trimotor aircraft. They were used as crop dusters, as early transport aircraft and air ambulances, and they were flown by barnstormers at county fairs. At first, Ford used airplanes his company had been using to transport automobile parts between assembly plants. In 1925, automobile giant Henry Ford won a contract to fly mail between Chicago and Detroit and Cleveland. Ford Trimotor being loaded with mail bags.
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