The Maintenance and Manufacturing Branch provides service to a varied constituency. With the second largest fleet of civil aircraft in the western world, Canada's maintenance organizations assist in ensuring that all aeronautical products built, operated or maintained under Canadian control conform to national and international airworthiness standards. Ensuring that these standards are met involves a vast network of organizations and personnel, these include:
In addition, the Branch provides services to numerous aerospace manufacturing companies. With the sixth largest aerospace manufacturing sector in the world and unprecedented growth in this sector, exports exceeded $11 billion in the year 2000. There are 112 aeronautical product manufacturers in Canada including aircraft components, avionics, engines, and complete aircraft construction.