Makes a difference if it is regularly sheduled maintenance (planned over months) or a response to a squwak.
Some examples of problem areas were
serviced oil on both engines and left filler caps off
Performed emergency borescope inspection of both engines after birdstrike and left both borescope plugs off,
Checkd both engines for signs of oil-hiding and failed to properly secure the cowls
and who can forget the EAL L1011 with all three engines.
It's those off-line stations that I worry about that don't often erform the action on that particular sustem