General Airways Flight 785 departed Portland at 02:00, destined for Merrill Field, Anchorage with a cargo of produce consisting mainly of crated eggs. A refueling stop was made at Annette, Alaska at 07:09. The flight delayed at Annette for two hours and twenty-two minutes, awaiting improvement of weather conditions at Anchorage. Weather conditions en route included temperatures around -10 degrees C with freezing drizzle. The freezing drizzle changed to snow at about 09:05, and the pilots made preparations to continue the flight. Flight 785 departed Annette at 09:31. Flight 785 reported by Cape Spencer at 11:47, 9,000 feet, estimating over Yakutat at 12:45. This was the last radio contact with N21748. The wreckage was located the next day on the side of Mount Crillon about 30 miles from the center of Amber Airway No. 1, on a bearing of 36 degrees and 46 miles from Cape Spencer intersection. PROBABLE CAUSE: “Deviation from the planned route due to improper navigation of the flight.”