What was found
FLT#837, JFK-STI. (AIRCRAFT DECLARED AN EMERGENCY AND PERFORMED AN AIR TURN BACK TO JFK) ' DURING TAKEOFF ROLL AT ROTATION SPEED, AIRCRAFT JERKED HARD LEFT. AFTER LIFT-OFF A SIGNIFICANT VIBRATION WAS FELT. SUSPECTED BLOWN TIRE. DECIDED NOT TO RETRACT LANDING GEAR. PROCEEDED WITH A LOW APPROACH FOR JFK TOWER TO VISUALLY INSPECT GEAR. ALL APPEARED NORMAL. PROCEEDED TO BURN FUEL FOR NORMAL LANDING. ROLL OUT FELT A WOBBLE.' (SUPPLEMENTAL TO FOLLOW)