National Geographic : 1926 Jan
THE NATIONAl, GEOGRAPHIC MAGAZINE Photograph by Willard Schmitt ONE OF TE M OF T OTOSOF TllS PLANE STOPPED ON ITS TAKE-OFF The pilot escaped, but the mechanic was killed. This was a type of bimotored airplane used for a time in the early days of the Air Mail. Photograph by Captain A. W\.Stevens STARTING TIE MOTOR OF A MAIL PLANE (SEE TEXT, PAGE 8) Note the propeller, made of duralumin metal. After 1oo hours of service (about 10,000 miles), motors are taken out of the planes for overhauling. The planes are sent to the central repair shops at Chicago (Maywood) after 750 hours, or about 75,000 miles of flying, where they are put in condition as good as new at a cost of about $2,000.