Denis wrote:
Stewart Kissel wrote:

Ok, this helps clear up an issue that has been bugging
me. I would be interested in anyone who could verify/comment
on whether a tow release could be used for a start...If
a Start Point had been declared.


No, it cannot (except reverting to a *free record* performance)

SC3 1.4.5.b says that distance using up to three turnpoints is "A flight
from a START POINT via up to three TURN POINTS to a FINISH POINT." Note
that is says "a START POINT", not "the START POINT". SC3 1.1.8 says a
START POINT is either "(a) The RELEASE POINT, or (b) A WAY POINT
declared as a START POINT, or (c) The midpoint of a START LINE." Note
that the pilot or data analyst can apparently choose between (b) and (c)
after the flight, as I've never seen a declaration form (paper or
electronic) that requires that you declare before the flight that you
are using a start line as opposed to a start way point (with OZ). Being
a computer programmer, I'd argue that the "or" in clause (a) has the
same logical precedence as the "or" in clause (b). Therefore, if you
have declared a start, it still seems to me that it would be valid to
use any of the START POINT options, including the RELEASE POINT. Have
you found a rule someplace else that would render this interpretation
incorrect?

Marc