Originally Posted by
vilas
It may have happened due to incomplete understanding of DES mode and constraint compliance. Easier to explain that than device more complicated solution.
Nah, people with over 10k hours on type, just trying to be smarter and doing it "better" than the system. Then a distraction comes in, and here you go.
Unfortunately from a trainer's point of view the solution is always the same : training !
From a Ops/safety point of view it's training AND something else to teach the remaining 99% of the pilots population not to be naughty.