The DC-3 departed from the Philadelphia at 18:46 for Cleveland. A flight plan was filed with Philadelphia ATC which specified that the flight proceed from Philadelphia to Allentown according to Visual Flight Rules, and from Allentown to Cleveland according to Instrument Flight Rules at a cruising altitude of 4,000 feet. The flight was routine until it reported over Youngstown, Ohio, at 21:00, at which time a new flight plan was filed with Cleveland ATC because the Cleveland weather was below the authorized landing minimums and also because freezing rain was forecast at the time of the flight’s arrival. The destination was changed to Akron. At 21:14 the flight reported to the Akron-Canton Tower estimating arrival over the Akron Range Station at 21:17 at 4,500 feet and the tower issued approach clearance. At 21:18 the flight reported over the Akron Range Station. Five minutes later the flight reported outbound at 2,500 feet over the outer marker, south of runway 36. Weather at that time included a 4,000 feet overcast ceiling, scattered clouds at 700 feet, visibility 1 mile in light snow. At 21:32, the flight reported inbound at 2,500 feet over the outer marker and was cleared to land on runway 36. The DC-3 descended until it collided with trees 3,250 feet south of runway 36 and approximately 880 feet east of the center line of the runway, crashed and came to rest inverted. PROBABLE CAUSE: “The improper execution of an instrument approach which resulted in the aircraft being flown to the right of the proper approach path at an altitude too low to clear the terrain.”