Originally Posted by
WiFly
It was not an emergency, it was a non-emergency precautionary diversion with slightly high engine vibration but no indications of anything more serious. By all accounts everything was normal until after parking.
Since you seem to know, afaik Boeing does not specify a max vibration level, it’s also not an EICAS caution.
So your “slightly” high should not have been a reason to divert.
If the diversion was precautionary then it would have been prudent to get equipment by the runway.
So it was bad enough to divert without e-checklist/QRH guidance then I was bad enough to declare and ask for ARFF to follow them in.