BOAC:
- once again you have lost me!
We know it is 'authorised' - it is on the chart.
What 'company directives' do you need for a standard flight manoeuvre, trained and practised by nearly all crews?
In this part of the world air carrier flight crews must have airport qualifications for every authorized airport. This can range from something as simple as a study guide and questionaire to perhaps a fairly comprehensive video and Jeppesen color airport photographs, weather trend briefing pages and, for some more difficult airports, a special authorization, which may consist of the first entry with a check airman.
I hope that gets you back.