HC,
Most likely -
AGREEMENT BETWEEN THE GOVERNMENT OF CANADA
AND
THE GOVERNMENT OF THE UNITED STATES OF AMERICA
FOR
PROMOTION OF AVIATION SAFETY
In order to refine the type certification process and to gain maximum benefit from existing bilateral airworthiness agreements or other similar agreements, greater reliance is to be placed on the acceptance of foreign Type Certificates. Hitherto, with few exceptions, TCCA had accepted, without review, all normal, utility and aerobatic aircraft from the United States, including gliders and balloons on the basis of the Federal Aviation Administration type certification. By contrast,
transport, commuter and restricted category aircraft designed and manufactured in the United States were subject to a validation process between 1970 and 1985, which was replaced by
a familiarization process in 1985 as a result of a revised Canada/US Bilateral Airworthiness Agreement.