Affirm - yes. Used in response to "confirm".
For more aviation vocabulary visit http://aviationenglish.com/learning-zone/aviation-vocabulary/
Aviation English Asia has been offering part time and full time courses in Hong Kong since 2009.
All courses are available in Hong Kong. Check the schedule above for details.
Aviation English Asia has been offering part time courses in Vietnam since 2014.
All courses are available in Vietnam - typically every 8 weeks, or by special arrangement.
ICAO Aviation English, English for Aircraft Maintenance Engineers, Technicians and Mechanics, and English for Flight Attendants are available in Taipei, Tainan and Kaosiung.