What was found
D: Las - L/H plyon /engine fire - Flt 69 - while taxing in to the gate personnel observed smoke and flame at the top of the #1 ENG. and pylon area. Ground crew advised the pilots who followed QRH procedures. Maintenance opened the thrust reversers / core cowls on the # 1 ENG. and extingished the flames using fire extinguisher located at the gate, ramp level.C: Maintenance inspected the pylon, engine and fixed structure per AWA engineering instructions. The #1 engine and #1 outboard thrust reverser Assy. were replaced as a result of the inspection. In addition several pylon seals and a hydraulic line were replaced. The cause of the fire was determined to be from a fuel leak in the wing leading edge above the e