18Greens
In brief a narrow route briefing isn't wide enough and an area briefing is too wide.
You can set the width yourself, 10 nm either side of track is the default, make it 99nm either side if you want.
If you want a briefing for a geographic area within which you intend to bimble the way to do it is to choose two aerodromes which straddle your intended area of operations and use these as your departure and arrival aerodromes. Put your actual departure and arrival aerodromes plus any others you might visit in as alternates.
Now set the narrow route width to whatever is necessary to decribe a rectangular box covering the area you want. You will get all NOTAM affecting the area plus aerodrome NOTAM for all of the aerodromes you entered on the screen.
Talk of the "shape" of the brief is somewhat nonsensical.
A to B, default width gives you a rectangle 20 nm wide with the ends centred on A & B. This is NOT the area within which you will get NOTAM.
If say there is a NOTAM with a radius of influence of 25 nm centred 20 nm beyond your destination it will appear in your brief because its RoI cuts your route. It appears not because the shape is a lozenge, it is there because its influence extends into your intended route.
How do we talk direectly to AIS to get their view on it.
I know this is a radical suggestion, and some might think it a bit risky, but you could try writing to them either by letter or email or even telephoning them. The postal and email addresses and the telephone numbers are after all on the website
