However the TOWS originally should have been checked prior to each flight. But of course due to that balance between safety and commercial viability it was soon to interpreted to mean prior to the first flight of the day.
safety and commercial viability balances are nice sounding words after the accident in suggesting blame to some mysterious financial organization group but worthless in communicating strategies for preventing accidents .
I see some productive pointers in today's discussions but past tense commercial viability is not one of them.