Cessna G1000 IFR Operation

What Does VFR and IFR Mean in Flying?

VFR means Visual Flight Rules—flying in clear weather you can see through. IFR means Instrument Flight Rules—flying by reference to instruments, including when weather limits outside visibility. Aircraft in the National Airspace System operate under one or both of these rule sets on every flight.

Understanding VFR vs IFR matters early in training: most student flying starts under VFR, and earning an instrument rating is what unlocks IFR privileges on the path toward commercial and airline flying.

What Does VFR Mean?

VFR stands for Visual Flight Rules. It means the aircraft is intended to operate in visual meteorological conditions (VMC)—clear weather with adequate visibility. Clouds, heavy precipitation, low visibility, and other adverse weather should be avoided under VFR. Most general aviation flying and flight training occur in visual meteorological conditions.

What Does IFR Mean?

IFR stands for Instrument Flight Rules. It means the flight may operate in instrument meteorological conditions (IMC)—cloudy or otherwise adverse weather—by reference to instruments. Many aircraft also operate under IFR while remaining entirely in VMC for routing efficiency and air traffic control support. Just because you can fly in the clouds under IFR does not mean you should without being current and proficient.

How Do VFR and IFR Affect Flying and Flight Planning?

While IFR provides efficiency, additional safety, and usually consistent contact with air traffic control, it requires that pilots follow an exact pre-determined/pre-planned flight route. Deviations are allowed in instances of emergencies, diversions, traffic and weather avoidance, but generally air traffic control expects you to fly the route and altitude you were given, called a clearance.

VFR flying, however, affords the freedom of flying any route and altitude you choose, barring specific airspace limitations. Aircraft flying under IFR, for example, can be directed through Bravo airspace, or even restricted airspace, without a specific clearance to do so. Flying under VFR, pilots must verify restricted airspaces are not active before entering, and receive specific clearance into the aforementioned Bravo airspace. VFR pilots also lose the inherent safety and traffic avoidance callouts from air traffic control when flying under VFR, even if they are receiving Flight Following, which is a little extra albeit unguaranteed help as air traffic control watches you on radar.

What is the Difference Between VFR and IFR?

Choosing whether to fly VFR or IFR depends on several factors:

  • Equipment available on the aircraft
  • Current and forecast weather conditions
  • Goals of the flight

Pilots practicing maneuvers in the local area generally remain VFR for flexibility. Student pilots and instructors typically remain VFR on cross-country flights toward a private pilot certificate. Recreational flights—sightseeing or a short trip for lunch—are also often VFR. Pilots are limited to VFR if the aircraft lacks required IFR equipment, or if they do not hold an instrument rating to act as pilot in command on an IFR flight plan.

Some instrument-rated pilots may not be current or proficient enough for IFR, especially when weather is poor. Those pilots either stay VFR or wait for conditions within their personal minimums before flying IFR in IMC.

What are the Benefits of Operating Under IFR Versus VFR?

The benefits of operating under IFR are numerous.

  • Often the equipment on board allows for very precise flight along a route that is more direct than the twists and turns that might be required to dodge airspace and some weather under VFR.
  • IFR also allows an aircraft to depart in weather that is less than required for VFR, and enter the clouds once the IFR clearance has been received.
  • IFR allows pilots to get above the clouds to smoother air, above terrain and obstacles, and above much of the traffic.
  • Under IFR, air traffic control provides a watchful eye and will bring to attention any potential traffic hazards.

It is still the responsibility of the pilot in command to “see and avoid” other traffic even while operating IFR whenever the aircraft is in VMC. Above 18,000 feet an IFR flight plan is required. In the airlines, pilots will always fly IFR as required by the specific regulations that pertain to their operations, as well as their company’s operating procedures. However rare, some exemptions have been granted to airline movement on a case-by-case basis and there are some circumstances where movement under VFR may be preferred.

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How Do You Fly Under Instrument Flight Rules (IFR)?

An Instrument Rating (IR) is a pilot rating you can add to your pilot certificate. It is earned through intensive training focused on flying solely by reference to instruments and is what allows you to act as pilot in command under IFR. A well-trained and proficient instrument pilot can fly an airplane from point A to point B without looking outside except for takeoff and landing.

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