What was found
VIB IN FLR OF ACFT INTNSTY VARIES W/NR 1 ENG SPD. TAFI 71-00 HB VIBRATN IN FLR-INTENSTY VARIES W-SPED ENG NR 1CRZ ACP CHRNIC REVIEW. LOG: VIBRATN FELT IN FLR OF ARCFT -INTNSITY VARIES W/SPEED OF NR 1 ENG. BLEEDS OFF IDLE ENG READINGS NR 1 = 81.5% N1, 560 EGT, 91.4% N2, 3740 FF. NR 2 = 84.5% N1, 553 EGT, 91.4% N2, 4720 FF. NR 3 = 87.9% N1, 606 EGT, 92.1% N2. 4780 FF. -- TAT -17, FL 310. *S/D* ENGINE WAS CHANGED ON 12/1/00. FINDINGS TO FOLLOW. ENGINE WAS SHIPPED TO GE ONTARIO WHERE AN INCOMING TEST CEL RUN WAS PERFORMED WITH NO VIBRATION FOUND. ENGINE IS ON HOLD, CRF HAS 6 INCH CRACK.