Varies from area to area - but goes something like this:
•ALERT 1 = Minor malfunctions that Don’t constitute threat to aircraft or passengers
•ALERT 2 = Situations if not contained WILL endanger aircraft and passengers
•ALERT 3 = Imminent or actual crash of an aircraft on or near the Airport
so there nothing above Alert 7 Crash
There are only three ALERT codes.so there nothing above Alert 7 Crash
Had a crash about a mile from the end of the runway a few years ago and it was dispatched as an Alert V.