As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) NO VACUUM WARNING LIGHT CAME ON DURING CRUISE FOR LT SIDE AND STAYED ON. PILOT REPORTED IN LOG AT ARRIVAL. FOUND PUMP DRIVE SHEARED AT UNUSUAL POINT. PUMP SEIZED. OVERHAUL INSTALLED AUG 15/98 AT 1116.7 AFTT. REMOVED AT 12090.7 AFTT. PART T.B.O. IS 1000 HRS. PART T.S.O. IS 924.0 HRS. SUBMITTER SUSPECTS CAUSE TO BE POOR COOLING DESIGN, THEREFORE, INEFFICIENT HEAT REMOVAL.