Twin prop airplane used for cargo and passenger service.
A jet IS an airplane. These days many, but not all passenger planes are jets. Many small ones are piston engined.
Aircraft with jet or turbine engines use varities of kerosene.
Cub
It's called a 'passenger seat' .
For long-distance travel, they mostly used trains and passenger ships.
200
The passenger airplane that flies faster than the speed of sound is called the Concorde.
1920's
around 6'7
auto-pilot
I think the word is manning sheet. Passenger list is what they usually call the passenger listing. The word used is 'manifest.' A cargo manifest lists the cargo and a passenger manifest lists the passengers and crew.