Great point. Signing. The M/R has to be signed. This rarely if ever happens.
Just like the prop that came off in Canberra after take off. My mate was going for a row.
In passing a guy came into the hangar. Saw he was a little down and ask why. Told the story about the prop. His luck was on his side. He saw the owner remove the prop that very weekend. Safed by the bell. The owner didn't say to anyone he done left the lame take the blame. I often see what owners have done. zero documents zero m/r entries.
Now with comercail products when I done AA in the old days there was a cause in the CAOs that allowed the use of them. But I do believe it has been removed.
The intent of shed 8 is not for requeral type maintenance but for break downs away from an airfield with a maintenance facility.
Now remember this. You may as an owner remove what ever you like from an aircraft, take the engine out. Pull it down.
But !!!!
You may not put it back together!!!!!!