You just don't get it, obi. But that's understandable: You have a very narrow experience that just happens to be repeated over and over.
Who is it that signs for and takes responsibility for the daily inspection? Not the engineer that signed the MR. As rutan around has pointed out, the fact that some LAME has signed an MR does not absolve the pilot from responsibility for spotting the loose spark plug lead, or that 9 quarts of oil had been added by the LAME without draining the old stuff and changing the oil filter, or the undercarriage circuit breaker that's pulled, or the ....
(When is it that pilots find the most things wrong with an aircraft? In that inspection and flight just after some LAME signed the MR.)
Who is it that has responsibility for the weight and balance calculations and loading distribution for the flight? Not the engineer that signed the MR.
Who is it that has responsibility for the fuel load and calculations? Not the engineer that signed the MR.
Who is that has responsibility for the landing and take-off distance and obstacle clearance calculations? Not the engineer that signed the MR.
Who is that has responsibility for reviewing and planning around the weather forecasts and NOTAMS? Not the engineer that signed the MR.
You're as bad as AVMED. You have this messianic belief that you and the manufacturer's recommendations and pieces of paper are the only bastions against aviation death and destruction. (Actually, you're worse, because you don't have the capacity to comprehend that you're at higher risk of liability when you 'sign out' a new engine than you are when you sign out one that's on condition.)
When the weather turns bad or a magneto fails because of some dodgy spark plugs fitted by some narrow-minded LAME who takes as gospel the propaganda produced by the manufacturer, believe me: That last thing pilots are reaching for and the last thing on which safety depends is your POS MR (or AVMED's POS medical certificate) and what they represent.
To add insult to injury, the owner will then have to pay to get the magneto fixed, so that the dodgy plugs can destroy that magneto as well. But who cares. It's "safe" because some LAME has signed an MR, in accordance with the manufacturer's propaganda.
Between that and privatisation of the airports, GA is all but dead. Well done, Australia!
