Manuals, Standards, Circulars and Bulletins

In this section, you'll find Environment Canada's documentation pertaining to aviation weather forecasting, observing standards, circulars and bulletins. This documentation is managed by Environment Canada for use by Environment Canada as well as for other Government of Canada Departments and partners.

Manuals

 

Circulars

Obs Circulars provide instructions concerning new or revised observing procedures and/or new equipment and provide temporary interim instructions.

Note: All observer circulars are now incorporated into MANOBS 7th Edition, Amendment 18.