Monthly Archives: February 2009

Ottawa TFR for President Obama's visit

Four and a half years ago I complained about a Temporary Flight Restriction (TFR) for President Bush’s visit to Ottawa. I like President Obama a lot better than I liked President Bush — and I’m very excited that he’s making … Continue reading

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Class A airports

Update: removed Le Bourget. ICAO Class A (“class alfa”) airspace is the strictest of all, allowing only IFR operations (without special permission). In the U.S. and southern Canada, most airspace between FL180 and FL600 is class A (the floor is … Continue reading

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