Before the flight, the pilot did not obtain a weather briefing and departed without approval from company personnel. The airplane departed the airport about 0230 and climbed to 14,500 feet mean sea level. The pilot obtained visual flight rules (VFR) flight following services from air traffic control (ATC) personnel during the flight. While the airplane was en route, ATC personnel advised the pilot that an area of moderate precipitation was located about 15 miles ahead along the airplaneā€™s flight path.

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