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Memo to Maynard L. Pennell from William H. Cook, subject: "727 risks," March 21, 1960. Discusses Cook's concerns about the Boeing Model 727 and describes possible development and production risks. Three (3) typed pages.
Memo to Maynard L. Pennell from William H. Cook, subject: "Problem areas and potential inconsistencies in the 727," March 21, 1960. Discusses potential engineering issues with the Boeing Model 727, such as proper handling during take-off and landing and the possibility of a Dutch roll problem. Two (2) typed pages.
Memo to Maynard L. Pennell from William H. Cook, subject: "SST cabin arrangement," December 11, 1964. Letter is cc'd to L. T. Goodmanson, V. Hudson, H. Lacey, R. Little, and B. Williams. Discusses possible cabin arrangement and cabin priorities for a supersonic passenger jet. Two (2) typed pages.