Nope, no airweights. I forgot one - for a brief period, Smith & Wesson 940s were authorized as POWs. I know a guy who bought one, thinking that using the same ammo in his 226 and his backup gun would simplify life. He barely got to carry it before a change came out disapproving them because of the different procedures for reloading (the moon clips). I should have bought it from him on the cheap, but then I wasn't the gun-savvy fella I am today.
I should correct something else from my previous post regarding POW Model 19s and 66s. This was in reference to primary belt guns. By far the most frequently encountered Smith POWs of any kind were the various J frames, the most common probably being the Model 60. In my part of the Bureau these were almost universally called "five shots" and carried in ankle holsters while the Model 13 or Model 10 bounced around in the trunk of the Bu-car. Everybody I knew had one, while only a few guys paid out their hard earned cash for a larger gun when they already had a perfectly good Model 13 or Model 10. By the time I came along, most agents were trying to transition to a semi-auto and POW revolver use plummeted, with the exception of the J frames.