I don't see how you came up with 1.4NM.
If you look at the example again, R1 distance for a standard 10 mile PT
starting at or below 6000 ft is 5 miles. Since the R1 pivot point is 1
mile offset from a point abeam the PT fix, that means there are 4 miles
of primary protection (5NM -1NM) on the non-PT side (not 1.4 miles) and
6 miles of primary protection on the turn side (5NM + 1NM) extending to
8 NM on the turn side (R3 6NM value plus 2 mile offset). There is an
additional 2 miles of secondary protection (R2 7NM value less 1 mile
offset = 6 NM)

JPH

Bob Gardner wrote:
Followed the instructions in TERPS 234 and plotted it out.

Bob Gardner

wrote in message ...


Bob Gardner wrote:


Gotta wonder why the protected airspace on the non-PT side is 1.4 miles
wide
all the way out to the maximum distance. If flying on the black line is a
regulatory requirement, why not just protect the turn area alone?


Where did you get that number?