Crikey OOW! My experiences with a Morris 1100 meant that your bond had to last the life of the vehicle.... about six months!
Seriously, a different application. You weren't really relying on the bond, you were relying on the bulk properties of the adhesive material, and that is a different requirement to transferring load through an interface. The consequences of failure would also have been less stringent than for a structural bond on an aircraft. But then, a broken down 1100 near Walgett at midnight can be pretty risky too!
Blakmax