ORIGINAL:
Bax Carl Goldberg kits that people continue to purchase are still in production. Please remember that if enough modelers don't buy an item, it cannot be kept in production, no matter how much you like them. That being said, here's the latest version of the Falcon series of airplanes:
http://www.carlgoldbergproducts.com/.../gpma1940.html
These parts can be ordered through any hobby retailer who sells Great Planes kits and accessories.
Bax, that version of Falcon is an interesting one, patterned after the Junior Falcon, even has the same wingspan, one of which I built in 1973 as single channel with Ace Pulse Commander and Adams standard actuator and Golden Bee engine.
As a manufacturer's incentive is profit, it makes no sense to produce products that aren't selling well unless they are a necessary part to support another product that is selling.
I've also noticed that Great Planes has a product similar to the Falcon, kit discontinued but ARF still produced, [link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXDTM8&P=7]Great Planes Easy Sport 40 ARF[/link]
I gather that as electric ARF's have gotten more sophisticated and with the advent of RC simulators to provide great familiarity with flight characteristics, people move up more readily to advanced aircraft than before. The resurgence of smaller aircraft don't rekit themselves as readily as the larger planes did when they hit the terra firma. So I guess that these type intermediate trainers are slowly becoming a thing of the past, no?