|Headquarters||Montreal, Quebec, Canada|
|Paul Bouchard, President; Didier Toussaint, Group President|
Top Aces, is a Montreal, Quebec-based defence contractor that offers contracted airborne training services to the Canadian Armed Forces through the Contracted Airborne Training Services (CATS) program. Top Aces operates a fleet of modernized fighter aircraft to provide Red Air threat replication, Joint Terminal Attack Controller (JTAC) training, practice munitions drop, air-to-air gunnery training and naval target tow profiles for the Canadian and German militaries. It also provides electronic warfare training and tactics development, and supports advanced radar trials in nationally controlled environments. All Electronic Warfare Officers and EW role equipment are provided by the 414 Electronic Warfare Squadron, Royal Canadian Air Force (RCAF) as part of the CATS contract.
Top Aces was founded in 2000 by three former Royal Canadian Air Force CF-18 fighter pilots. In 2005, Top Aces signed a $94-million contract with the Canadian Armed Forces to supply contracted combat support and adversary training. In 2014, the company signed a contract to provide fast jet airborne training services to the German Armed Forces for five years. In 2017, Top Aces was awarded a long-term Contracted Airborne Training Services contract with the Government of Canada.  In March 2017, Top Aces was awarded a contract to provide training support to the Australian Defence Force, with 3 Alpha jets deployed to RAAF Base Williamtown for 2 years.
Top Aces, formerly Discovery Air Defence Services (DADS), is no longer a 'Wholly Owned Subsidiary' of the parent company Discovery Air. It is now owned by Clairvest and other unnamed investors with transactions completed on 22 Dec 17. As of July 2018, Top Aces Inc, Top Aces Holdings Inc and Clairvest are subject to ongoing legal proceedings lodged in the Ontario Superior Court of Justice (Commercial List).
Top Aces aircraft do not have any RCAF markings and are not included in the RCAF aircraft inventory. Some Alpha Jets retained the German Air Force paint schemes, but a few have been repainted in desert or northern camouflage. The fleet consists of:
|Aircraft||No. of Aircraft||Variants||Notes|
|Alpha Jet||16||Model A|
|Douglas A-4 Skyhawk||7||A-4N|
|Douglas A-4 Skyhawk||2||TA-4J|
- Exhibitor Profile for Discovery Air Inc.
- About Us
- Force, Government of Canada, National Defence, Royal Canadian Air. "414 Electronic Warfare Squadron | 3 Wing | Royal Canadian Air Force". www.rcaf-arc.forces.gc.ca. Retrieved 2018-02-06.
- RCAF Spring Edition 2015, page 82
-  Discovery Air deploys A-4N jets to Germany ahead of training contract]
- "Discovery Air Defence and Air Affairs Australia Win Jet Air Support Trial Contract in Australia". Top Aces. 2017-03-01. Retrieved 2018-09-11.
- "CCCA Proceedings - Ontario Superior Court of Justice" (PDF).
|Wikimedia Commons has media related to Discovery Air Defence.|