ED I agree with you it is indeed good engineering practice however where does it stop? Dual inspections are there for a certain purpose and not just for anything, surely it is enough that a licensed type rated engineer should reasonably be expected to carry out this task without the need for duplicates?
When I worked the line (QA office now
) we always closed and latched the cowls as soon as the task was finished that required you to open them in the first place. The cowls on the JT9 were the worst design you could imagine and frequently were lost in flight even though they were closed properly
Turin, what an Operator demands is entirely up to them but that is not what we are talking about we are talking about mandatory duplicate inspections.