What was found
DURING DESCENT AT APPROX 3,000 FT, THE RT ENG SHUTDOWN. ATTEMPTED AN UNSUCCESSFUL AIR START. ACFT LANDED AT 9:43 AM WITH NO FURTHER EVENTS. A REGULAR SCHEDULED ENG SOAP SAMPLE HAD BEEN PULLED ON THE ENG 6.4 HOURS PRIOR TO THE LANDING. SOAP SAMPLE CAME BACK WITH A REQUEST FOR AN ADDITIONAL SOAP SAMPLE IN 25 HOURS. ATTEMPTED AN UNSUCCESSFUL GND START ON ENG. DETERMINED THE GEARBOX OIL SCAVENGE PUMP WAS NOT ROTATING WHEN PROP WAS PULLED THROUGH. THE ENGINE WAS REMOVED, DUE TO DAMAGE TO MAIN DRIVE SHAFT. DAMAGE CAUSED BY GEARBOX DEBRIS DURING THE GEARBOX FAILURE & SUBSEQUENT RESTART ATTEMPTS.