As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MACHINED RT ENGINE EPR/EGT INDICATION BEGAN TO FLUXUATE. SEVERITY AND FREQUENCY BECAME MORE SEVERE RAPIDLY. ENGINE RETARDED TO IDLE EPR/EGT IND STABILIZED IN NORMAL RANGE. ENGINE NOT SHUTDOWN AND REMAINED IDLE WITH NORMAL IND'S FOR REMAINDER OF FLT. R & R PACK TEMP CONTROLLER IAW MM 21-51-14-404. OPS NORMAL. BITE CK NO FAULTS. THIS CLEARS M550322. PLACARD REMOVED.