OK, I ordered the book and read that chapter. I think the whole overall point of the safety tips was to save weight by having less structure in the outer wing tips. The wings were designed to what I would call.....having two ultimate loads, one at 7.5g that would break off the outer portions at a controlled location(at a carefully designed rivet joint at half span of the outer, folding part of the wing). This also broke off the outer half of the aileron(as designed).
Once the outer portion of the wings(3 feet) broke away, the wing was relieved of tip loads and the remaining portion was good to its second ultimate load of 13 g.
A higher approach speed was required when this happened but the aircraft was still landable on a carrier.
Last edited by tcasblue; 25th Sep 2021 at 02:59.