Bill Clark

Legal Counsel

t: (416) 681-9900

c: (647) 500-7115

f: (647) 343-9229


One of the few Canadian lawyers devoting their total time to the commercial and regulatory legal requirements of aviation and travel companies, Bill’s practice is primarily a corporate and regulatory law practice with an emphasis on those business entities operating in those industries in Canada.

Bill is consulted by many foreign air carriers and their countries regarding bilateral negotiations with Canada. Numerous airlines have utilized his legal services from commencement of operations to Canada by either charter services or offline services, through the bilateral negotiations with the Government of Canada to allow scheduled services.

Bill also provides regulatory advice to domestic airlines as well as companies in associated aviation industries such as ground handlers, parts suppliers, engine overhaulers, flight training schools, helicopter operators and fixed-based operators. Commercial and transactional advice is also provided to aircraft lessors and lessees, as well as third party financial institutions in regard to leasing, financing and the interchange of aircraft.

A significant portion of Bill’s practice is dedicated to the executive aircraft segment of the aviation industry. He has served as a Director of the Canadian Business Aviation Association (CBAA) for over a decade and is presently a member of several National Business Aviation Association (NBAA) committees. Bill has been the designated legal counsel to the Canadian Association of Tour Operators (CATO) since it’s inception in 1984.

Renowned for his expertise in the field, Bill is often asked to participate at and deliver specialized papers at aviation conferences in Canada and the United States. Past topics have focused on the Canadian aviation industry regulatory framework, aircraft and components security in Canada and travel industry regulatory matters.

Bill was called to the Ontario Bar in 1971 after graduating from the University of Western Ontario (Honours Business Administration, 1964) which he attended on a full scholarship and the University of Toronto’s Faculty of Law (1969).

Previous to creating Clark & Company (now YYZlaw) in 1999, Bill conducted his practice at Nobbs, Woods & Clark which was a successor firm to Hamilton Torrance, which originated in 1949, and which commenced the dedicated aviation practice in the mid 1950s.

Participation in Aviation Industry Related Groups & Associations

  • Canadian Business Aviation Association (CBAA): Director, 1999-2010
  • Canadian Association of Tour Operators (CATO): Legal Counsel, 1984-Present
  • National Business Aviation Association (NBAA): Regulatory Issues Advisory Group, Member, 2007 – Present
  • American Bar Association, Forum on Air & Space Law: Member of Governing Council, Canadian Liaison, 2008 – Present
  • National Business Aviation Association (NBAA): Tax & Risk Management Committee, Member, 2002-2007
  • Aircraft Owners & Pilots Association (AOPA): Legal Counsel (Canada), 1996-2012
  • Air Transport Association of Canada (ATAC): Member, Legal Affairs Committee, 1973-Present
  • Seneca College of Applied Arts & Technology: Aviation & Flight Technology Program, Chair, Industry Advisory Committee, 1982-2005
  • Canadian Owners & Pilots Association (COPA): Director, 1976-1983
  • Canadian Flight Magazine: Columnist , “The Law and You”, 1975-1989
  • Canadian Bar Association: Chair, Air Law Section, 1976/1977 and 1981/1982
  • American Bar Association: Sections on Business Law/Aircraft Financing, Forum on Air & Space Law,Aircraft Finance and Contracts Division
  • Lawyer Pilots Bar Association