Division (j) An aircraft operated in accordance with the visual flight rules which wishes to change to compliance with the instrument flight rules shall:
United Kingdom
- (1)
if a flight plan was submitted, communicate the necessary changes to be effected to its current flight plan; or
- (2)
as required by SERA.4001(b), submit a flight plan to the appropriate air traffic services unit as soon as practicable and obtain a clearance prior to proceeding IFR when in controlled airspace.