well OVERTALK - what happened before the AD came out in the first place.....? Very rarely a fault occurred which is for sure undesireable. At least by imposing the AD and the SOP of switching the pumps off before the tank runs dry you are reducing the risk even though the crew may occcasionally forget to switch off the pumps in time.......
Cavalier? Quite a reliable car in my experience. Still not a Boeing though!