What was found
(CAN) LT ENGINE GEN FAILURE LIGHT CAME ON & GEN SELECTED OFF. WHEN A/C SLOWED FOR LDG SMOKE OBSERVED IN COCKPIT. ELECT. SYS WERE SHUT OFF & SMOKE DISSIPATED. UPON INVESTIGATION FOUND THAT GENERATOR HAD SHEARED OFF ALL OF MOUNTING STUDS WITH GEN LYING IN BOTTOM OF ENGINE COWLS. GEN REMOVED & RETURNED TO CONAIR, ABBOTSFORD FOR FURTHER INVESTIGATION. GEN SHAFT SHEARED & END-BEARING P/B JH 203-10 FOUND DESTROYED . GEN ELECTRICAL WIRING SECURED & ENGINE GROUND RUN COMPLETED.ENGINE FUNCTION TESTED SATISFACTORILY. ENGINE FILTER CHECKED FOR CONTAMINANTS - NONE FOUND. ELECT. WIRING CHECKED FOR DAMAGE - WIRING REPD/REPL, AS NECESSARY.