sorry took so long to reply. was stuck in lagos with the whole country on strike and no internet.
thank you all so much. i definately have more insight on the issue and from your responses i deduce that:
a) during testing it was not practical( read :safe) to exhaustively test all possible fault/ failure scenarios in critical phases of flight, and therefore the computer analysis was used.
b) by design the manufacturers have built in redundancies that would take care of or prevent any CONCEIVABLE failure/fault scenarios. ( an engineer told me that on our CF6B2-7F with pneumatic reversers the autostow feature has been "optimised" over the years and it will as far as he knows not allow unwanted deployment- i wasn't conviced)
and it is because of the above that it is not a memory c/list. I stand to be corrected.
Aluta Continua!!
thank you all for your time and effort once again.