What was found
ON ADVANCING THRUST LEVERS, CREW FELT A VIBRATION COMING FROM NR 2 ENGINE, AT THE SAME TIME A TRIPLE CHIME OF "E2 LOW N1". TAKEOFF ABORTED JUST BEFORE 80 KNOTS & TAXIED A SHORT DISTANCE TO J INTERSECTION. AFTER TAKEOFF ABORTED TRIPLE CHIME MESSAGE WENT AWAY & "E2 NO DISP" REMAINED ON. AFTER EXITING RUNWAY NR 2 ENGINE SHUTDOWN. WHEN MZ ARRIVED THEY SAW THE ATS ACCESS DOOR BLOWN OPEN & FOUND METAL SHAVINGS IN THE TAIL PIPE. MAINTENANCE STARTED THE NR 2 ENGINE & NOTICED THERE WAS NO N1 IND & SHUT IT DOWN. MX INSPECTED ENGINE & FOUND IT WAS SEVERELY DAMAGED. R/R NR 2 ENGINE. LEAKS AND OPS CHECKS GOOD.