noun
abbreviation for Instrument Flight Rules, which are a set of regulations and procedures for flying in conditions where visibility is restricted
adjective
describing something related to or in accordance with Instrument Flight Rules
-
The pilot must adhere to IFR regulations when flying in low visibility conditions.
-
If you're flying in bad weather, make sure to follow IFR rules.
-
Don't mess around with IFR, it's serious business.
-
Navigating through life can be like flying IFR, sometimes you have to rely on instruments rather than what you see.