Can it be successfully argued that completion of a task is also the supervision of that very same task?
"The CASR Dictionary contains the following meaning of supervising:
A person (the supervisor) is supervising the carrying out of maintenance done by another person if the supervisor:
- is physically present at the place that the maintenance is being carried out; and
- is observing the maintenance being carried out to the extent necessary to enable the supervisor to form an opinion as to whether the maintenance is being carried out properly; and
- is available to give advice to, and answer questions about the maintenance from, the person carrying it out. "
I believe I mentioned something along these lines earlier, but not in the same words. The above definition was taken from the CASA website in the FAQ section for Part 66
Civil Aviation Safety Authority - CASR Part 66 questions & answers
Getting back to the point about fuelling, the refueller signs no paperwork for the task of refuelling an aeroplane, other than he/she has supplied the fuel as required. The engineer signs the receipt saying all is well together with the check sheets for the transit.
When the task is signed off, the LAME in charge is verifying that all the work has been carried out. The LAME hasn't necessarily supervised the task or even been at the aeroplane. The LAME signing off on each individual task takes the responsibility for ensuring each task is completed IAW the applicable AMM's.