Complex sentence: The crash is attributed to the failure of both pilots to watch for conflicting air traffic during VFR flight, a rare example of a midair collision in daylight VFR conditions during cruise flight in uncongested airspace distant from an airport.
Split into simpler sentences: The crash is primarily attributed to the failure of the pilots to "see and avoid" conflicting air traffic during VFR flight. This accident is a rare example of a midair collision in daylight VFR conditions during cruise flight distant from an airport.