In controlled airspace, ATC separates IFR aircraft from obstacles and other aircraft using a flight clearance _______ route, distance and speed.
A. due to
B. because of
C. regardless of
D. based on
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ATC monitors IFR flights on radar, or through procedural control where radar coverage is not ______ .
A. necessary
B. available
C. needed
D. sufficient
Aircraft position reports are ______ if ATC can see an aircraft on radar.
A. required
B. necessary
C. unnecessary
D. possible
A flight operating under IFR is required to provide _______ if ATC advises a pilot that the plane is not visible on radar.
A. speed reports
B. heading reports
C. altitude reports
D. position reports
In uncontrolled airspace, IFR aircrafts separate themselves from each other by using charted _______ altitudes to avoid terrain and obstacles.
A. maximum
B. minimum
C. necessary
D. best