It’s particularly a pilot’s nightmare: You’re sitting across the table from an FAA investigator trying to explain how your actions seemed reasonable at the time. Somehow you didn’t know about the thunderstorm/icing/closed runway/TFR that the investigator has neatly printed out and was presumably public knowledge at least five minutes before you took off.
The problem is really FAR 91.103. It requires that “each pilot in command shall before beginning a flight, become familiar with all available information concerning that flight.” That’s a tall order. The next two subsections specify the minimum information that must be obtained. For every flight, this includes takeoff and landing distances. For IFR flights and those VFR flights not in the vicinity of an airport, the reg adds weather reports and forecasts, fuel requirements, alternates and known traffic delays.
