good foundations for buildings and runways. Its accessibility must be given attention. It should be possible to reach the field by motor, bus, or trolley from the center of the adjoining city or town, and it should have possible rail connection. Further than that, it should be possible to reach it from nearby airways without having to pass over the city or over a long stretch of water. Reasons are evident.
Assuming that certain types of planes will always take-off by running along the ground, every field that is going to be generally useful must be large enough in all directions to take care of even the heaviest planes or airliners. A special incline to give initial speed, as used at Roosevelt Field, Long Island, or a catapult as is used on ships of the Navy, is hardly practicable in an airport where
BOLLING FIELD, WASHINGTON, D. C. ATTENTION IS CALLED TO THE ABSENCE OF OBSTRUCTIONS WHICH MIGHT INTERFERE WITH TAKING-OFF, AND TO THE LINE OF THE MAIN HIGHWAY ON WHICH THE FIELD IS LOCATED.
NOTE ALSO THE MARKERS ON THE ROOFS OF THE DIFFERENT BUILDINGS
(Official photograph, U. S. Army Air Corps) PLAN OF PETERBORO AIRPORT, HASBROUCK HEIGHTS, N. J.
(Courtesy Department of Commerce)
PLAN OF LOWRY FIELD, DENVER, COL.
(Courtesy Department of Commerce)