You only realise what you should have done when it's too late.
So. What should you have done?
I worked as an engineer on this aircraft, and I was running late when we were designing the motor failover, so I was a bit sloppy.
Well. I've done my job properly. I landed a nice insurance deal for this airline. The bonus will provide for my widow, and the insurance for the airline.
Now I come to think of it, they were a little too happy about that deal.