If the towrope has a breaking strength more than twice the maximum
certificated operating weight of the glider being towed, a safety link
has to be installed at the point of attachment of the glider and the
tow plane with the following breaking strength requirements.
Safety Link (Weak Link) Requirements
Safety link (Weak Link) at the glider end:
o Minimum Strength = 80 percent of the glider maximum certificated
operating weight
o Maximum Strength = twice the maximum certificated operating weight
Safety link (Weak Link) at the tow plane end:
o Strength Requirements = Greater, but not more than 25% greater than
that of the safety link on the glider end, and not more than twice the
maximum certificated operating weight of the glider