John is thinking of the ACO DiSq chips out of Portland, OR.
Aero Club.

Same wings different but center is different. ACO in a circle.

Aero Club of Oregon, a once elite social organization that was located in Portland. In 1919, a group of aircraft pilots organized the Aero Club, at the time exclusively for flyers. It was located in the old Calumet Hotel Building downtown. In 1926, it expanded and was opened to non-pilots. In 1937, it moved to its final location at 804 S.W. Taylor St. where it flourished for nearly 50 years. In 1984, declining membership forced it to close it's doors. The club had a well known restaurant for members and featured athletic facilities as well as games. Because of Oregons social gaming laws, it was one of the clubs that were, at least until recently, allowed to operate in the Portland area.