The
CallAir A-9 was an improved version of the A-5 and A-6
CallAir agricultural aircraft. The A-9 was developed by
Intermountain Manufacturing Co. (IMCO) which had purchased CallAir
in 1962.
The CallAir A-9 was also known as the Ag
Commander A-9 after IMCO was purchased by the Aero Commander
Division of Rockwell Standard in 1966.
In 1971, Rockwell International sold the rights to
produce the A-9 and its derivatives to Aeronautica Agricola Mexicana
SA (AAMSA).
