PRIVACY ACT MATERIAL REMOVEO VI During this mission for the B-S7A aircraft was APFLE II, fired on 5 May, the airplane, piloted by with observing, was inside the cloud a total of 6 minutes . ? From these experiences, the Air Force Special Weapons Center constructed an evaluation of the B-S7A as a sampler, Hal Plank from Los Alamos discussed performance of the B-57A airplane with the crews after each mission, Following RA Shot reported that because — of the high altitude of the mission, he had to concentrate on flying duties at all times, A slipeht error handling the B-57A, for example, caused a loss of from 500 to 1,000-feetaltitude and he was unable to keep the miclear cloud in sight while maneuvering the airplane. Because the cloud scattered and stratified above 50,000 feet, there was difficulty in identifying for a sampling run. . could not help because he was - buried back in the fuselage of the airplane and had almost no visible contact with anything save the radiation instruments. Most of the samples collected, therefore, were probably taken in the “radiation flux" area outside or below the cloud. On the other hand " flying 500 feet above samples, but explained that as «gathered fairly adequate "a matter of luck" he happened to get a good view of the cloud just before penetration. Although both crews received nearly the same radiation exposure, the latter's sample was far superior? These discussions indicated that mch of the performance 12h AFWL/HO SVEH@}2-003), 4