Visual Flight Rules (VFR) vs Instrument Flight Rule (IFR) Visual flight rules can be used under any circumstances where conditions allow pilots to clearly see where they’re going in their aircrafts.

However, mistakes in instrument meteorological conditions (IMC) add up quickly and there are some errors that could turn your flight into a terrifying disaster.

Furthermore, the report states that satellite imagery "showed instrument flight rules conditions with cloud tops between 6,000 and 7,000 feet in the area surrounding the accident site and southward." ...

The company that owned the helicopter on which Kobe Bryant, his daughter and seven others were killed Sunday was not certified to fly passengers under instrument flight rules — which is often ...