What was found
NR 1 ENGINE VIBRATION DURING CRUISE, ITT +50-60 HOTTER THAN NR 2, N1 + 1%> NR 2, FF + 150> NR 2 APPROXIMATE SPEED .5 ROLL TO RT SIDE TO HOLD LEVEL TRIM. NR 1 ENG SURGE IND DURING DESCENT. TROUBLESHOT IAW FIM 72-00-00-810-807-A & EMM 72-00-00-810-311/100; NO RECORDED OR ACTIVE MAINT MESSAGES ON CMC. INSPECTED DP3 AIR TUBES FOR DAMAGE; NO DEFECTS NOTED. INSPECTED VARIABLE STATOR VANE SYSTEM NO DEFECTS NOTED. IAW FIM CLEANED N2 SENSOR AND FMU HARNESS CONNECTORS. ACCOMPLISHED HIGH POWER ASSURANCE CHECK IAW EMM 72-00-00760-118, CHECKS GOOD, ALL PARAMETERS OK, ACFT OK FOR SERVICE. NOTE: POWERPLANT ENGINEERING REVIEW OF FHDB DVDR DATA SHOWED NO CORRELATED FAULTS / PARAMETERS.