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Mr. c. J. Stock, Secretary New York Subcommittee on Air Space 385 Madison Avenue New York 17, N. Y. April 17, 1947 Rei'erence: New York Meeting No. 12 Subject No. 26, New York Case :{/:156 Dear Sir: Receipt of' the minutes of the above meeting are acknowledged with thanks. However, on reading them, a discrepancy was noted. We believe the weather conditions agreed upon for P.hase 2 operations were not a cloudless sky, but no ceiling under 20,000 i't. We realize that there might be occasions lilen the clouds present would not constitute a ceiling. Yet, due to chaotic or unstable sky conditions, our balloons might be considered an unseen hazard to aircrai't. It is therefore requested that we be permitted to i'ly these rapidly rising, high altitude balloons ai'ter obtaining clearance on days when there are no more than scattered clouds in thin layers up to 20,000 ft. and visibility greater than three miles. This is an important point, as the phenomena which we hope to measure is not a i'requent one and our chances to investigate the remote phenomena are markedly reduced if' we have to wait far cloudless skies and the phenomena to coincide. This would have been brought to your attention earlier. However, we -are unable, until yesterday, to coni'irm our impressions with the representatives of the Army Air Forces who were present at the meeting. CSS:gm (U) Yours very truly, C. S. Schneider Research Assistant