What was found
ON APPROACH, AFTER THROTTLES WERE RETARDED, NR 1 ENGINE SPOOLED DOWN AS NORMAL. WHEN POWER WAS APPLIED, NR 1 ENGINE FAILED TO SPOOL UP. AFTER LANDING, NR 1 THROTTLE WAS CYCLED BACK AND FORTH WITH N1, N2 OR FUEL FLOW. ENGINE HAD SHUT DOWN. NR 1 GENERATOR THAN TRIPPED OFF LINE. REMOVED AND REPLACED NR 1 P/D VALVE AND LOCK WASHER. ENGINE RUN AND LEAK CHECKED. (M)