Edition 4 of the Flight Information Service Officer (FISO) Manual (CAP 797) was published on 26 February 2021, effective 26 March 2021.
Published for use by FISOs it contains procedures, instructions and information pertaining to both aerodrome and area operations. It may also be of general interest to others associated with civil aviation.
In addition to amendments resulting from the UK’s exit from the EU, the Fourth Edition of CAP 797 incorporates those supplementary instructions that have been issued and are effective before 26 March 2021; i.e. up to and including SI 07/2020.