What was found
FLT PT 315 - KJSJ-KPHL - AFTER LANDING AND DURING DEPARTURE FROM RUNWAY ONTO TAXIWAY, AIRCRAFT LOST NOSE WHEEL STEEING AND HAD SEVERE NOSE WHEEL VIBRATION. CONTACTED MAINTENANCE TO TOW AIRCRAFT FROM TAXIWAY. FOUND THE NOSE GEAR TORSION LINK SAFETY PIN MISSING. LOCATED PIN ON TAXIWAY. PERFORMED VISUAL INSPECTION OF NOSE GEAR AREA AND SAFETY PIN. NO DEFECTS NOTED. REINSTALLED PIN. OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (M)