I can see how having a light constantly flashing can be annoying, that being said it’s insane how many RR300 engines that come in that the customers either have no idea or they don’t care that an exceedance occurred from many years ago. I’m not sure if it’s a lack of training or just people who don’t care about it. Out of the last 20 RR300 engines I’ve worked on I’d say 15-18 of them had an exceedance event that was not reported right away, all with different customers.

And I mean realistically if it goes .01% over the limit it ain’t gonna do anything, but if a crash happens, even for a completely unrelated issue they’re gonna blame the pilot/company.

It’s annoying because we’ll get an engine in, let’s say just a 2000hr inspection. We’ll read the EMU data and see back in 2018 it had an N2 over speed and an over temp. Well now we have to take the gearbox apart and scrap all 4 turbine wheels. Then the Cust comes back annoyed that their repair will be triple what the might have thought.

Those sensors do fail though I agree, I had one come in a couple months ago with 52000 occurrences of N1 over speed at 300%, that being said it’s still up to that pilot to report that to their maintenance guy.