Tony: No, that 'A' suffix does not indicate an Aerobat. The 150A was the second production Model 150, built only in 1961. Compared to the original 150 (1959-60) it had main gear moved aft by two inches, larger rear windows and a new instrument panel. Just 333 were manufactured, and it is now regarded as a classic. The Aerobat was denoted by an 'A' prefix and model type suffix (A150K etc.) and did not appear until 1970.