|Quoting KC135TopBoom (Reply 4):|
No, aircraft design groups (ADG) is based on wingspan only. The aircraft approach catagory is based on final approach speeds. You can find the ADG in AC150/5300, Airport Design. ADG VI is a new catgory created just for the An-124, A-380, and B-747-8.
What the original poster provided (AI, AII, BII, etc) are referred to as Airport Reference Codes... The first letter refers to the category of approach speed (of which I provided before) and the Roman numeral refers to the aircraft's classification based on their wingspan (of which I provided above)...
For example an aircraft with an ARC of "AI" would mean a plane with a wingspan less than 49' and an approach speed of less than 91 knots.
The terminology provided by the original poster isn't worded correctly... Look up AC150/5300-13 Appendix 13 for a list of aircraft based on their ARC. It's not so much a Part 139 thing as it is an Advisory Circular