AERONAUTICAL CHART RESEARCH AND DEVELOPMENT 
Fig. 2 
Our customers are confronted with a wide variety of requirements as to 
charts scale, format size, use, etc. Scales vary from 1:10,000 target charts to 
1:5,000,000 navigation sheets. The success of a tactical operation, be it bomber, 
reconnaissance, or a fighter mission, depends to a large degree on the availability 
of an up-to-date and correct chart for both planning and actual flight use. 
The Branch must also take into account, in its research program, the require- 
Fig. 3