passengers. Planes requiring short runways are a distinct advantage inasmuch as the available space, in the direction of the prevailing wind, is very limited on some of the islands. The wind is so constant in direction during the spring of the year that single strips on each island will be adequate. A detailed discussion of requirements and the method of handling wili be found in Section IV of this Report. Design. A complete discussion of the many design problems involved con- stitutes Section IV of this Report. The governing criteria has been that the engineering requirements are special in nature, calling for original thought, and subject to possible changes as scientific discoveries develop ami crystallize. it is understood that many things will be done that have never been done before, and this Report has been prepared with the thought in mind of meeting this challenge with engineering flexibility. Construction. The problems of construction have been carefully consid- ered, and Section V is devoted to analyses of these problems and recommendations of orocedure. The time schedule has been developed to spread the con= struction operations over the entire period prior to the next test, in order to effect economies in these operations. The longer the construction period, the smaller will he the number of men required to do the work and the more efficiently these men can be employed. sented in Section V in five phases. The work has been conceived am pre- Recommendations relative to operation during tests and during the roll-up are given in Section VI and Section VII of this Report. Ifl - 9