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By month
February 1955

ADs published in February 1955

3 Airworthiness Directives: 1 rotorcraft, 1 propeller, 1 appliance.

January 1955 March 1955

Rotorcraft

AD 55-05-01 · published 1955

Scotts-Bell 47 Inc Helicopters

Scotts-Bell 47 Inc Helicopters

Propeller

AD 55-05-02 · published 1955

Hamilton Standard Division Propellers

Hamilton Standard Division Propellers

Appliance

AD 55-04-01 · published 1955

Cessna Aircraft Company, Federal Skis Appliances

Cessna Aircraft Company, Federal Skis Appliances

Not the official record. The text is the Federal Register's, laid out for reading, and for older ADs the FAA's own index; the original linked on each AD is the legal version, and the FAA's DRS shows the current revision.