1. You can go into any FSS and read NOTAMs in person, or get them by telephone or radio, or on the Nav Canada website. The United States Department of Defense has an international NOTAM site, too.

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2. Ugh, no. There are hundreds of NOTAMs changing every day, and many of them change too quickly to be mailed. A.I.P. updates are mailed to all active piots.

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3. NOTAMS cover airport closures, navaid outages, tractors working near runways, helilogging, airshows, parachute jumping, new radio antennae, airspace changes and many other similar warnings.

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4. NOTAMs are valid until the exact time on the NOTAM, or until cancelled or replaced, if the time on the NOTAM is APROX. Some NOTAMs are valid for a few hours, e.g. for a Snowbirds performance over the town, and others for weeks or months, e.g. for resurfacing of a runway.