AVGAS is not saying he doesnt feel he should have to sign for the engine cowl, he is saying that the workpack he is already using has an entry stating that ALL cowlings are installed so he doesn't see the need for ANOTHER seperate entry in the workpack for every single cowling/fastener/acces door.
Maybe the CAA consider that a bit vague, I don't know, never worked GA. I suppose if there aren't that many panels in total the argument could be used either way.
Are you seriously trying to convince everyone that every time you open the access door to the ground power socket or open a door or magnetic flap to check fire bottle pressure you raise an entry.
Has anyone inferred that?
Opening a ground power panel is not a maintenance function, removing an engine cowling is.
Just me tuppence worth.