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1 Airworthiness Requirements of Air Commerce Regulations for Aircraft: Effective January 1, 1931 I (1931)

handle is hein.space/airinss0001 and id is 1 raw text is: U. S. DEPARTMENT OF COMMER CE
AERONAUTICS BRANCH
AERONAUTICS BULLETIN No. 7-A
AIRWORTHINESS REQUIREMENTS
OF
AIR COMMERCE REGULATIONS
FOR

AIRCRAFT
EFFECTIVE JANUARY 1, 1931
O Tr OP
UNITED STATES
GOVERNMENT PRINTING OFFICE
WASHINGTON : 1931