What was found
CLIMBING THROUGH 17;000'; NO.1 ENGINE INDICATED APPROXIMATELY 107%. WE RAN QRC CHECKLIST. NO1 THRUST LEVER WAS BROUGHT TO IDLE. .NO.1 N1 DECREASED TO 97% THEN STARTED TO INCREASE AGAIN AT THAT POINT WE MOVED NO.1 ENGINE START LEVER TO CUTOFF. THE ENGINE WAS AT FULL THRUST WHEN IT WAS CUT OFF & AIRCRAFT YOWED SOME WHAT. / REMOVED AND REPLACED NO.1 ENGINE PER MT 771-00-01 WORK ORDER 864397PN OFF: CFM6-7B S/N OFF: 864292PN ON: CFM56-7B24/3 SN ON:802122