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Old June 10th 05, 03:37 AM
Bob Gardner
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I rely on the Summit Aviation CD-ROM...guess they don't provide
everything...

Thanks.

Bob

"JPH" wrote in message
news:xC5qe.9693$mC.6960@okepread07...
Bob,
The TERPS manual that contains the PT instructions can be found at this
website;
http://av-info.faa.gov/terps/Directi...260.3_1-18.pdf

If you go to page 34 (of 268) you can find the graphic and on page 35 you
can find the table that gives the instructions on how to build the PT
manually.

JPH

Bob Gardner wrote:
It is apparently not possible to communicate with you directly, so let me
explain how I got the 1.4 miles of protected airspace on the
non-maneuvering side of procedure turn airspace, and apologize for being
wrong...the protected airspace is 4.0 miles wide, giving the pilot even
less reason to work at tracking the outbound.

Back when TERPS was an actual publication with pages rather than an
online source, Para 234 included instructions for constructing procedure
turn airspace based on max allowed distance. In the instructions for a
ten-mile PT, the procedures designer was told to select a point one mile
inside of the airspace on the manuevering side, perpendular to the
outbound course at the fix. The next step was to select another point,
ten miles from the original point but two miles inside of the maneuvering
airspace. The designer was then told to swing an arc with a 5 nm radius
from the first point and a 6 nm radius from the second point. A line
drawn tangent to these two arcs, parallel to the outbound course, defines
the edge of the primary protected area on the non-maneuvering side. The
primary area gives 1000 ft of vertical clearance...beyond that, the
protected airspace vertical protection tapers down to zero over an
additional two miles.

Can't find the detailed instruction in the online TERPS, but the
illustration remains.

Bob Gardner