What was found
PILOTS REPORTED, WHILE PERFORMING A 2ND START FOR NR 2 ENG. NR 2 STARTER SEEMED TO TURN ON & OFF VERY QUICKLY WHEN IGNITION & ENG START SWITCH IN ON. DURING ENG START, N1 DOES NOT CLIMB ABOVE 6 %. ON 3RD ATTEMPT TO START, NOTICED NR 2 ENG ACCY SECTION HAD VISIBLE FLAME, ENG FIRE EXTINGUISHER SYS UTILIZED. MX TROUBLESHOT ISSUE & INSPECTED NR 2 ENG ACCY SECTION FUEL LINES, WIRES, FIRE LOOP & COWLINGS, NO DEFECTS NOTED. FIRE CONTAINED TO STARTER GEN. MX R & R STARTER GEN IAW TC 1900-2430.01. OPS TEST GOOD IAW TC 1900-2430.01. FIRE BOTTLE R & R AS WELL AS SQUIB. TEARDOWN OF STARTER GEN PERFORMED & FOUND THAT A BEARING ON COOLING FAN HAD INNER BEARING RETAINER MISSING RESULTING IN FAILURE OF STARTER GEN & ARCING/SHORTING OF UNIT & FLAME FIRE FROM NR 2 ENG REPORTED BY THE PILOTS.