The problem with this approach is that it does not generalize. You might think that if pilots just had this one piece of information, it would be obvious what's

The problem with this approach is that it does not generalize. You might think that if pilots just had this one piece of information, it would be obvious what's wrong, so let's provide that information. But if you apply that consistently to every system, the crew will be buried in notifications all the time, most of which are perfectly normal, and most of the rest are normal responses to the abnormal conditions produced by the actual fault. Even in a space shuttle, the flight crew did not see most of the data, and NASA had a room full of engineers following the telemetry. When you have less than a minute to save everybody, the last thing you need is something like an SQL explain result.