What was found
(CAN) PUMP FAILED ABOUT HALF WAY DURING 1.7 HOURS FLIGHT TG3 TO CYXK. ALTERNATOR FAILURE FOLLOWED. ALTHOUGH PUMP TURNED FREE BY HAND, BROKEN NYLON DRIVE SHOWED SIGNS OF PRE-FAILURE DETERIORATION. PUMP HAD 1356.1 HOURS, WAS INSTALLED NEW 7 APRIL 1977, CHECKED OK AT TSN: 1046.9 HOURS AT ENGINE OVERHAUL ON 21 MAR. 1996. AIRCRAFT FLOWN 309.2 HOURS IN LAST 4 YEARS AND 5 MONTHS. AVERAGE OF 70.11 HOURS A YEAR. HANGARED 95 PERCENT OF TIME ON GROUND. PRIVATE OWNED. .REPLACED PUMP - NEW. REPLACED B3-5-1FILTER - AIR INLET. (X)