Flight Information Service Officer Manual (CAP 797)

Supplementary Instruction (SI) 2020/06 to CAP 797 was published on 28 July 2020, effective 3 December 2020.

A review of wake turbulence arrangements at AFIS aerodromes identified opportunities to reduce complexity and improve the quality of the guidance. This SI details changes made to the CAP 797 relating to warnings of wake turbulence provided by aerodrome FISOs.