As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 190 IN CRUISE VIB HP NR 2 JUMPED INTO YELLOW RANGE. REDUCED THRUST TO IDLE & ARROW RETURNED TO GREEN. HOWEVER EVEN WITH THRUST LEVER IN IDLE ARROW INTERMITTENTLY WENT OUT OF LIMITS. UPON INITIAL DESCENT ARROW PEGGED FULL OUT OF LIMITS AT THAT TIME PERFORMED A PRECAUTIONARY SHUTDOWN. R & R ENG NR 2 HP COMPRESSOR VIBRATION SENSOR IAW RR MM 77-41-10. OPERATIONAL CHECK OK.