the boeing model 307 stratoliner was an airliner which was made by boeing. it was the first airliner to have a pressurized cabin. this meant that the boeing 307 could fly at 20,000 ft (6,000 m), which is above most weather. if the plane was at 14,700 ft (4,480 m), it would be like 8,000 ft (2,440 m) inside the cabin. the model 307 carried five crew and 33 passengers. the cabin was nearly 12 ft (3.6 m) across. it was the first plane which took off from land to have a flight engineer.