1 1930 â 1939 World History - 1930 â 1939 World History Amelia Earhart (1897â1937) The Library of Congress Picture 2  ... RFC: meaning and definitions-RFC: Definition and Pronunciation. 3  Agencies of the United Nations-Agencies of the United Nations Linked to the United Nations through special agreements, the ...
1 Wood was used on most early airplanes and is now mainly used on homebuilt airplanes. 2  Wood is lightweight and strong, but it also splinters and requires a lot of maintenance. 3  Aluminum (blended with small quantities of other metals) is used on most types of aircraft because it is lightweight and strong.
Boeing designs airplanes to resist corrosion through selection of the proper materials and finishes and the use of drainage, sealants, and corrosion inhibitors. These designs are based on knowledge of what causes corrosion and the types of corrosion that occur in airplane structure. In addition, following a corrosion control program is necessary throughout the service life of the airplane.