That year, the world's demand for commercial airliners was 724 aircraft.
The 20 biggest companies bought 60 percent of new commercial airliners.
Boeing now does not have any commercial airliners under development.
A few of them only arrived by ship and commercial airliner.
Currently, commercial airliners fly between the two cities in about 11 hours.
Pan Am was involved in the study because such an aircraft had potential use as a commercial airliner.
They're banking a good deal more than commercial airliners do.
They have received a great deal of attention as potential terrorist weapons that might be used against commercial airliners.
"For them to get into a commercial airliner may be contrary to the security policies."
The crew of a commercial airliner clearly does not fall within this category.
