The radiators themselves were split into three sections: an oil cooler section outboard, the middle section forming the coolant radiator and the inboard section serving the cabin heater.

The film moves on to show wing assembly and inspection, and the making of the cabin heater.

According to co-pilot Ferguson, the cabin heater was acting up after the plane took off.

The theory is supported by records that showed that DC-3s in general, and this aircraft in particular, had a history of problems with the cabin heaters.

An-2PK - A polar research aircraft developed by WSK-Mielec with heated skis, insulated cabin and an additional cabin heater.

The cabin heaters were on, and fresh Titanian oxygen was being pumped into the air, and soon they could peel off the extra layers of clothing.

Despite outside temperatures around minus 30 degrees Fahrenheit, he has stayed reasonably warm with the help of two cabin heaters.

But about 3 A.M. yesterday, some 21 hours after Mr. Fossett's launching, the cabin heater, fueled by propane gas, failed to light.

Everyone seems to be checking their radar sets and cabin heaters as closely as their sails and rigging.

In a bid to reduce the costs, the Ministry of War, having invested already in clothing for the crews, ordered the cabin heaters to be deleted.