What was found
OPERATOR REPORTED THAT EMERGENCY ELECTRIC FUEL PUMP NO LONGER WORKED. UPON REMOVAL AND REPLACMENT OF PUMP, DISCOVERED THE FAILED PUMP HAD BEEN IN SERVICE ON THE AIRCRAFT FOR 23 YEARS. THESE PUMPS ARE STAMPED ON THE PUMP HOUSING TO REPLACE EVERY TEN YEARS. TOTAL TIME ON THE PUMP IS UNKNOWN, HOWEVER, ACFT TT IS 2,665.0 HOURS. SUBMITTER RECOMMENDED THIS SHOULD BE AN ITEM OF PARTICULAR ATTENTION DURING ANNUAL INSPECTIONS.