Aspects of this topic are discussed in the following places at Britannica.
...operating practices, and requirements for continuing training to retain certification to operate. Examples include federal aviation authorities that oversee pilot training (e.g., the U.S. Federal Aviation Administration); road agencies that administer driver’s licenses may exist at the provincial level (as in Canada) or at the national level (as is more common in Europe)....
In 1973 the U.S. Federal Aviation Administration instituted systematic searches of airline passengers and hand luggage. A magnetometer, an electronic device that could detect metal objects, was used to check passengers for weapons. Carry-on baggage and other belongings of passengers were searched by hand or by low-pulse X-ray machines. Local armed guards were stationed at search points and...
We welcome your comments. Any revisions or updates suggested for this article will be reviewed by our editorial staff. Contact us here.
Regular users of Britannica may notice that this comments feature is less robust than in the past. This is only temporary, while we make the transition to a dramatically new and richer site. The functionality of the system will be restored soon.