What was found
ON TAKEOFF ROLL WITH MAX POWER, AIRCRAFT HAD A LOUD THUMP FELT IN TILLER WHEEL, RUDDERS AND FLOOR.ALL ENGINE INDICATIONS APPEARED NORMAL WITH NO INDICATION OF COMPRESSOR STALL. R-T-O AT APPROX 40-50 KNOTS. PER CREW A/C WOULD PULL TO THE LEFT ON TAXI TO THE GATE. REMOVING NR 2 MLG TIRE TO INSPECT FOUND THE WHEEL NUT HAND TIGHT, MAYBE 5-10 FOOT POUNDS. ALSO FOUND LOCK BOLT LOOSE. REMOVED NR 2 MLG TIRE. INSPECTED NR 2 BRAKE PER M/M. REPLACED NR 2 TIRE RETORQUED NR 1 TIRE AS PRECAUTIONARY.