IAS (Indicated Airspeed) is the speed shown on the aircraft’s airspeed indicator, based on pitot-static pressure, and it is the primary speed reference a simmer uses for handling the aircraft....

IFR, or Instrument Flight Rules, is the set of rules used to operate an aircraft by reference to instruments and air traffic control clearance rather than primarily by outside visual cues....

ILS, or Instrument Landing System, is a radio-based approach aid that provides lateral and vertical guidance to help an aircraft align with the runway and descend safely during an instrument approach....

IVAO, or the International Virtual Aviation Organisation, is an online network that allows flight simulator pilots and virtual air traffic controllers to operate together in a shared, live environment...

LNAV, or lateral navigation, is an aircraft guidance mode that follows the programmed horizontal flight path in the flight management system....

LOD, or Level of Detail, is a graphics technique that uses simpler versions of a 3D model or scene element as viewing distance increases to improve performance....

Mach Number is the aircraft’s speed expressed as a ratio of the local speed of sound, commonly used in flight simulation at higher altitudes instead of knots....

A METAR is a standardised aviation weather report that describes the observed conditions at an aerodrome at a specific time....

Microsoft is a technology company that develops operating systems, software platforms, cloud services, and consumer and business applications used widely across computing and flight simulation....

Mmo is the maximum operating Mach number, the highest speed an aircraft should fly as a Mach value before compressibility and high-speed aerodynamic effects become unsafe....