What was found
WHILE ON FINAL APPROX 200-250 FEET WHEN THE NUMBER 1 ENGINE CHIP AND OIL PRESSURE LIGHT CAME ON CONFORMATION OF THESE INDICATIONS CONFIRMED WITH OIL PRESSURE INDICATION AT 0 PSI. THE #1 ENGINE WAS SECURED, AN EMERGENCY WAS DECLARED WITH A RUN ON LANDING PERFORMED SUCCESSFULLY. THE #1 ENGINE TROUBLESHOT AT THIS TIME TO A CRACK IN THE ACCESSORY GEAR BOX NEAR THE STARTER-GENERATOR. THE AFFECTED ENGINE P.N. 311720001 S.N. BB0097 AND AFFECTED STARTER-GENERATOR P.N. 23081-073 S.N. P2165 WERE REMOVED AND REPLACED WITH OVERHAULED SERVICEABLE ENGINE P.N. 311720001 S.N. BB0073 AND SERVICEABLE #1 STARTER-GENERATOR P.N. 23081-073 S.N. Y10271. THE ORIGINAL STARTER-GEN WAS REQUESTED CHANGE BY PRATT AND WHITNEY FOR EVALUATION. DURING THE ENGINE CHANGE ALL OF THE ENGINE OIL LINES AND OIL COOLER WERE CONFIRMED NON-CONTAMINATED.