Fitting Aviation Learning Center Online Nexus

Control tower position responsible for transmitting departure clearances to IFR flights.

The fix, point, or location to which an aircraft is cleared when issued an air traffic clearance.

An IFR clearance not yet received after filing a flight plan.

Used by ATC, the time at which the departure clearance is automatically canceled if takeoff has not been made. The pilot must obtain a new clearance or cancel the IFR flight plan if not off by the specified time.

The ratio between lift pressure and dynamic pressure.

The boundary between two air masses where cold air is replacing warm air.

A true course corrected for variation and deviation errors.

A low-power, low- or medium-frequency (L/MF) radio beacon installed at the site of the outer or middle marker of an ILS.

A small circle graduated in 360° increments, to show direction expressed in degrees.

An aircraft with retractable landing gear, flaps, and a controllable-pitch propeller.