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conditions encountered by the flight had its apex in a secondary low center located between Utica and Canton, New York. From the apex a cold front extended westward to Lake Erie and a warm front southeastward from the apex to extreme western Connecticut thence across Long Island into the Atlantic. Showers and thunderstorms were occurring near the warm front, but these had been forecast not to reach Burlington before flight arrival time. A high broken to overcast condition along the route was indicated with periods of lower broken clouds ranging from about 1,000 to 5,000 feet.

At Burlington the ceiling dropped from unlimited to 1,800 feet with a rain shower during the period of 0847 to 0905. This information was available at Montreal so that the pilot had evidence that the shower condition had already extended to Burlington before his departure from Montreal. The ceiling again became unlimited after the rain shower but with some lower scattered clouds. At 1053 it became 900 feet followed by 1,100 feet and 4 miles at 1102; 800 feet and 3 miles, light rain shower at 1122; 800 feet and 1 mile, heavy rain shower at 1128; 1,000 feet and 2 miles, light rain shower at 1142 and 1,500 feet and 2 miles, light rain shower at 1202. At the time of the landing the heavy rain had moved east of the field.

Runway 1 at the Burlington Airport is 3,600 feet in length and is surfaced with an asphalt or macadam material. Investigation disclosed that Runway 1, including the approach thereto, was well within the limits prescribed by the pertinent Civil Air Regulations, and that the Administrator of Civil Aeronautics had approved the airport for scheduled air carrier operation in DC-3 type aircraft.