Aero-Terms are designed to be a daily reminder of the terms,
names, acronyms and explanations of the unique language that
populates the aviation world. Aerospace, sport aviation, fixed
wing, helo, you name it... it's all fair game.
Aero-Terms should serve as a quick but intriguing reminder
of the terms you may use every day, or an introduction to an
aspects of the Aero-World you may not yet be familiar with. ANN
also encourages readers to go beyond the FMI link, and further
research any intriguing terms.
Instrument Meterological Conditions -- Weather conditions
expressed in terms of visibility, distance from clouds, and cloud
ceilings during which all aircraft are required to operate using
instrument flight rules (IFR). In other words, stay home unless you
are IFR rated.