Word of the subpoenas had circulated in aviation circles since late February.

During the early 1930s, the concept of a night bombing strategic campaign began to become paramount in military aviation circles.

That gag got a lot of laughs at debutante parties, but in aviation circles it seemed a bit raw, a little too close to the bone.

In aviation circles, he is often referred to as "The pilots' pilot."

Almost unknown in aviation circles, it now owned one airport near the nation's capital.

In aviation circles there is a truism that says a good airplane looks its role.

There was speculation in aviation circles that the airline might try to submit its proposal for a vote as soon as Tuesday.

There was speculation in aviation circles that the Pentagon might have to resort to another emergency mobilization.

For this, he became known in aviation circles as a pioneer of aerial reconnaissance.

Contract Hire is rare in aviation circles, but gaining ground rapidly for motor cars.