July 13-15: Asia-Pacific Regional Aviation 2003. Airlines and suppliers whose business interests span the region attend this meeting for Asia-Pacific regional aviation professionals. Shangri-La Hotel, Singapore. See www.shephard.co.uk

July 15-17: Unmanned Systems Symposium and Exhibition 2003. The Association for Unmanned Vehicle Systems International sponsors this event, which includes unmanned aerial vehicle demonstration flights. Baltimore. See www.auvsi.org/symposium

July 29-Aug. 4: 51st Experimental Aircraft Association's Airventure. This year's annual fly-in convention features a replica of Howard Hughes' legendary H-1B racer. Oshkosh, Wis. See www.airventure.org

Aug. 19-24: MAKS, International Aviation and Space Salon. The Russian government sponsors this event. Moscow. See www.airshow.ru/etable.htm

Sept. 3-5: 8th India International Civil and Defense Equipment & Systems Exhibition and Conference 2003. Ashok Convention Center, New Delhi, India. E-mail satcon@nde.vsnl.net.in

Sept. 7-9: 9th World Route Development Forum. The event is billed as an annual route development meeting of the world's airlines and airports. Edinburgh International Convention Center, Edinburgh, Scotland. See www.routesonline.com

Sept. 8-12: 2003 Aerospace Congress & Exhibition. Palais des Congres, Montreal. See www.aerospace-na.com

Sept. 10-11: Aviation Industry Conference's Aero Engines Expo; 12th Annual Aero Engine Overhaul & Maintenance Conference & Show. London Heathrow Airport. See www.aviation-industryconferences.com

Sept. 29-Oct. 2: International Aviation Training Symposium. Cox Convention Center, Oklahoma City. See www.halldale.com/iats

Oct. 7-9: NBAA Annual Meeting and Convention. The National Business Aviation Association, an advocacy group for the business aviation community, sponsors this event. Orange County Convention Center, Orlando, Fla. See www.nbaa.org

Boeing Frontiers assembles the above listings for the convenience of its readers only, and they do not constitute an endorsement by The Boeing Company. Times, dates and subject matter are subject to change or cancellation. If you have any items you wish Frontiers to consider for the Calendar, please e-mail them to boeingfrontiers@boeing.com, or send them by regular mail to Boeing Frontiers magazine, 100 N. Riverside, MC: 5003-0983, Chicago, IL 60606-1596.