H.A.C.A. Tech. Ma>.io. 664 o ^ c\3 ^ co Figs.1,2 CO i-i CO CO ' ft) o jOO ! CO C\i lO CO C\3 OlrHl CO r 00 i O • j • 'vt^ to : CO Ti C\i j CO j M o (Ti CO in lO n • ! • i • CO • i • 05 lO i ^ in Ji o o o to a) CO CO 05 CD CD cn ^Pilot- Weather Design Pov/er Maintenance and plant ing and misc.… … plane Fig.2 Causes of all accidents in 1930 in ;l and in nvimber per 1,000 flying hours. Letters*rofor to corresponding lines of'Valiles IV and V. (See footnote to Ta^blo IC-CII.)
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