Khickphix you asked if maintenance errors are more well documented these days well they are!
You only have to look at the AAIB website and recent reports.BMA engines, BA windshield,baAirtours borescope/FCU trim, Airbus spoilers,Virgin brake unit etc; etc; etc;
I think the training and mentality prior to around 1978 did prevent a lot of this type of thing.
Current beancounter pressures don't help but I think we were sheilded from this by our very correct and experienced supervisors.Where are they now eh?