DFC
The list of dummy codes is referred to on the Help page of the AIS website (click
PIB Help either on the panel at the left hand side of the login page or on the drop-down "HELP" menu once you have logged in. It's also referred to in the index and on Page 32 of the
User Guide, links to which also appear in the same places. AIS have a quantity of these printed, if you phone them I'm sure they'l send you one on request.
Your way of getting a brief for a radius round an a/d works fine, however for many airfields the training area is not a circle round the a/d (White Waltham for example) but is an area off to one side.
The software ain't designed to give a radius round an a/d. It's designed for you to input a Flight Plan and get a briefing. (The on-line Flight Plan filing has not been implemented in the UK) This accounts for the "Briefing id" which is meant for a Flight No and the "UTC Date and Time of Flight" boxes which have no effect on the result returned.
The only place where a "Radius" is involved is on the "Route Briefing" input screen and it's to do with height filtering. As the
User Guide explains:-
Radius: This value is applies around the departure and destination airfield. No matter what cruising level Interval is selected, En-route NOTAM that fall within this radius (from SFC to 12000ft) will appear in the brief.
Hope this is helpful
Mike