Procedures for air navigation services.
International Civil Aviation Organization.
Montreal, Quebec : International Civil Aviation Organization,
2006-
"This edition incorporates all amendments approved by the Council prior to 3 October 2006 and supersedes, on 23 November 2006, all previous editions of Doc 8168)."
Also published in French, Russian, and Spanish.
Kept up-to-date between editions by amendments.
v. 1. Flight procedures -- v. 2. Construction of visual and instrument flight procedures.
Navigation (Aeronautics)