Skip to main content
Instrument Flight Rules

The Instrument Flight Rules (IFR) are a set of rules for flights where it can not be assumed that pilots will be able to navigate their aircraft or maintain separation from obstacles, terrain, and other aircraft by reference to features outside the cockpit.

All flights which take place in Instrument Meteorological Conditions (IMC) must be conducted in accordance with the Instrument Flight Rules (IFR). However, flight under the Instrument Flight Rules (IFR) may also be conducted under Visual Meteorological Conditions (VMC).
Looks like the weather forecast is predicting IMC over the airfield tomorrow. We better change our flight plan from VFR to IFR for tomorrow's flight.
IFR by AircraftAndStuff September 4, 2016
IFR mug front
Get the IFR mug.
See more merch
an aviation term for Instrument Flight Rules. it describes a cloudy or foggy day.
The airport i had intended to go to was reporting IFR, with ceilings of 300 ft overcast
IFR by dflyboy June 25, 2005
Related Words
Ifrah iFraud ifrit Ifra Ifraah ifraa ifrazemic iFriend IFR ifrad

IFR, YFP 

I'm fucking rich, You're fucking poor, IFR, YFP
IFR, YFP by Kasper696969 February 5, 2019
iframes is short for invincibility frames. In some video games, after taking damage you will be immune to damage for a short period of time afterward. This period of invincibility is called iframes.
You: How'd you run right over those spikes?
Friend: I had just taken damaged and used my iframes to run through.
iframes by nosam555 July 1, 2021
One of the most spectacular and enticing women you will truly ever meet, people want to be like her, she is the envy of almost every girl. It is impossible not to like this girl, she is bad ass, kind, hilarious, her smile will brighten up your dy no matter fucking WHAT. People are lucky just to meet her and breathe her ir. She is worthy of many things and person of great honor.
Wow, who is THAT girl, I have to meet her!! Whoa, you don't know? That's the one and only Ifrah dude...
Ifrah by ashmcl92 May 1, 2015
Ifra is a very smart girl ,kinda short and has a really aesthetic style, most of the times she’s thriving but also depressed but she’s still one of the coolest people to be around,if she decides to be friends with you consider yourself lucky because she hates a lot of people ,she’s really good at making people laugh with her edgy sense of humour.shes such a wonderful friend 10/10 would recommend
Yeet ifra 🤠✌️
Ifra by Miss steal ya men March 20, 2019
The act of Facebook raping (fraping) via an iphone.
Matt: Fuck! Steve ifraped me!

Steve: Haha do one Matt
ifrape by Andy and Jacque February 18, 2011