and yet another relay being required in the chain... Not so, it seems.
I was thinking that another relay would be required to reverse the default logic, to turn it on when the trigger signal is off, or missing...
Maybe some of this will come out in the inquiry, but as PJ2 says, at the time, the TOWS was maybe not an afterthought, but not given much priority.
It may also be a case of, once you have a warning system to fall back on, that pre-take-off 'killer item' checklists become less imperative and more of a chore....
As in business, 'fail to plan' and you 'plan to fail'...
“Planning is bringing the future into the present so that you can do something about it now” - before its too late