Here are a list of airports by my count which are improved in FlightGear AND represented in the Scenery Model Database. Improved means the addition of building scenery in the vicinity of the airport and an accurate taxiway layout. Airports with an asterisk only contain basic improvements, such as a single building, or untextured buildings.
Airports in italics are confirmed in development.
Last update: December 31: New airports: LIDA, LIDT, LIRJ, ULLI
Previous update: November 18; New airports: EGFF, EIDW, ENAL, ENSD
Previous update: September 27; New airports: LSZB, EGGP, LSGS, PANC, LIME
Previous update: September 12; New airports: KRNO, EETN, EETU
Previous update: August 29; New airports: EGKK, EDKB, KLAS, KIND, KFHR, LILQ, LILV, LFRJ, LOWI
EDDF - Frankfurt, Germany
EDDH - Hamburg, Germany
EDDI - Tempelhof, Berlin, Germany (Closed)
EDDL - Dusseldorf, Germany
EDDP - Leipzig, Germany
EDDT - Tegel, Berlin, Germany
EDFM - Mannheim, Germany
EDKB - Hangelar, Bonn, Germany
EDVE - Braunschweig, Germany
EEKE - Kuressaare, Estonia
EETN - Lennart Meri, Tallinn, Estonia
EETU - Tartu, Estonia
EFHF - Malmi, Helsinki, Finland
EFHK - Vantaa, Helsinki, Finland
EGFF - Cardiff, Wales
EGGP - John Lennon, Liverpool, England
EGGW - Luton, England
EGKA - Shoreham, England
EGKK - Gatwick, London, England
EGLL* - Heathrow, London, England
EGPH - Edinburgh, Scotland
EGSH - Norwich, England
EHAM - Schiphol, Amsterdam, Netherlands
EHEH* - Eindhoven, Netherlands
EHLE - Lelystad, Netherlands
EHVK - Volkel Air Base, Uden, Netherlands
EIDW - Dublin, Ireland
ENAL - Aalesund, Norway
ENSD - Sandane, Anda, Norway
ENVA - Værnes, Trondheim, Norway
ESGP* - Göteborg, Sweden
KABQ* - Albuquerque, New Mexico, USA
KATL - Hartsfield, Atlanta, Georgia, USA
KAUS - Bergstrom, Austin, Texas, USA
KBWI - Baltimore, Maryland, USA
KCGS - College Park, Maryland, USA
KDCA - Reagan National, Washington, DC, USA
KDEN* - Denver, Colorado, USA
KDTW* - Detroit, Michigan, USA
KFHR - Friday Harbor, Washington, USA
KIND - Indianapolis, Indiana, USA
KJAN - Jackson, Mississippi, USA
KJFK - Kennedy, New York, New York, USA
KLAX - Los Angeles, California, USA
KLAS - McCarran, Las Vegas, Nevada, USA
KLSV - Nellis AFB, Las Vegas, Nevada, USA
KLWT - Lewistown, Montana, USA
KMCI* - Kansas City, USA
KMTN - Martin State, Baltimore, Maryland, USA
KNUQ - Moffatt Field, Sunnyvale, California, USA
KOAK - Oakland, California, USA
KORD* - O'Hare, Chicago, USA
KOSH - Oshkosh, Wisconsin, USA
KOXB - Ocean City, Maryland, USA
KPDX - Portland, Oregon, USA
KPHX - Sky Harbor, Phoenix, Arizona, USA
KRNO - Reno/Tahoe, Reno, Nevada, USA
KSEA - Seattle Tacoma, Washington, USA
KSFO - San Francisco, California, USA
KSLC - Salt Lake City, Utah, USA
KVUO - Pearson Field, Vancouver, Washington, USA
LDSP* - Split, Croatia
LFFE - Moiselles, Enghien, France
LFPG - de Gaulle, Paris, France
LFPH - Le Pin, Chelles, France
LFPL - Lognes, Emerainville, France
LFPO - Orly, Paris, France
LFPZ - St-Cyr-l’École, France
LFSB - EuroAirport, Mulhouse, France and Basel, Switzerland
LFRJ - Landivisiau, France
LIDA - Asiago, Italy
LIDT - Trento, Italy
LILN - Venegono, Italy
LILQ - Massa Cinquale, Italy
LILV - Valbrembo, Italy
LIMC - Malpensa, Milan, Italy
LIME - Orio al Serio, Bergamo, Italy
LIML - Linate, Milan, Italy
LIRJ - Marina del Campo, Italy
LOWI - Innsbruck, Austria
LROP - Otopeni, Bucharest, Romania
LSGS* - Sion, Switzerland
LSZB* - Belp, Bern, Switzerland
PANC - Anchorage, Alaska, USA
RJTT - Haneda, Tokyo, Japan
RKSI - Incheon, Seoul, Korea
RPLL - Aquino, Manila, Philippines
TDPD - Melville Hall, Dominica
TFFF - Le Lamentin, Martinique
TFFG - Grand Case, St. Martin
TIST* - King, St. Thomas, US Virgin Islands
TJSJ - San Juan, Puerto Rico
TKPK - Bradshaw, Basseterre, St. Kitts
TNCM - Princess Juliana, St. Maarten
TQPF - Wallblake, Anguilla
ULLI - Puknovo, St Petersburg, Russia
VIDP - Gandhi, New Delhi, India
82C - Mauston-New Lisbon Union Airport, New Lisbon, Wisconsin, USA
68C - Central County Airport, Iola, Wisconsin, USA