What was found
AFTER TAKE OFF AND DURING CLIMB, THE RED MASTER CAUTION LIGHT AND RIGHT ENGINE OIL PRESSURE LIGHT ILLUMINATED. RIGHT ENGINE OIL PRESSURE DROPPED TO ZERO. COMPLIED WITH CHECKLIST PROCEDURE WHICH LED TO THE SHUTDOWN OF THE RIGHT ENGINE. EMERGENCY WAS DECLARED AND LANDING WAS UNEVENTFUL. MAINTENANCE PERFORMED TROUBLESHOOTING AND WAS UNABLE TO DUPLICATE THE DISCREPANCY. ADJUSTED RIGHT MOP AND SWAPPED LEFT/RIGHT ENGINE OIL PRESSURE TRANSDUCERS. GROUND OPS CHECKED PERFORMED. A SUCCESSFUL OPERATIONAL CHECK FLIGHT WAS PERFORMED. AIRCRAFT WAS RETURNED TO SERVICE.