There was the difference in aircraft type to consider as well.

A first flight is only one stage in the development of an aircraft type.

Most important, American is down to 7 aircraft types, from 14 during the 1990's.

By 1946 he had over 600 flight hours in 62 different aircraft types.

This record was broken nearly a year later by the same type of aircraft on 10 June 1990.

They flew over 60 million miles in every type of military aircraft.

This system is currently in use by many military aircraft types, including the C-17.

One or more of the following aircraft types might be used for this purpose.

He has over 3,000 flying hours in more than 40 different types of aircraft.

They are installed on a large number of different aircraft types.