IFR has various meanings in the NASA category. Discover the full forms, definitions, and usage contexts of IFR in NASA.
Plural, Regulations which must be followed when weather conditions do not meet the minima for visual flight.
NASAElectromagnetic radiation of wavelengths between 7500 A, the limit of the visible light spectrum at the red end, and centimetric radio waves.
NASALast updated: