Hello, fellow Floridian! Hi to you too. (waves)
Did the development involve a new safety feature/device? An improvement - safety is relevant, but YMMV as to whether it's a feature.
or was it more that something already existing was made safer? It was already.
Did this occur within the past 20 years? No.
relevant when it occurred? Mildly - '70s to '80s.
Is piloting the aircraft relevant? Yes.
Both companies make the same type of aircraft - civilian craft? This.
large jet airliners? And this.
military craft? bombers?