In the United States, DVFR is an aviation acronym for Defense Visual Flight Rules. It refers to one type of flight plan that must be filed for operation within an Air Defense Identification Zone (the alternative being an IFR flight plan). Aviation refers to flying using aircraft, machines designed by humans for atmospheric flight. ... For how a flight plan is produced, see Flight planning. ... North America is surrounded by an area called the Air Defense Identification Zone (ADIZ), which is jointly administered by the United States and Canada. ... in-flight refueling Instrument flight rules Interface Repository Integral Fast Reactor This page concerning a three-letter acronym or abbreviation is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ...
Flight rules under a DVFR plan are not substantially different than under a VFR plan, except that the pilot is required to notify Air Traffic Control prior to deviating from a DVFR plan while inside an ADIZ, and that two-way radio communication is required while inside the ADIZ. The Verein für Raumschiffahrt (VfR - Spaceflight Society) was an association of amateur rocket enthusiasts active in Germany from 1927 to 1933. ...
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