What was found
NO ABNORMALITIES WERE NOTED DURING PREFLIGHT INSPECTION. DEPARTED CRQ AND WERE CLEARED TO CLIMB TO 3,000 FEET. UPON LEVELING AT 3,000 FEET AND ACCELERATING, SHORTLY AFTER CROSSING THE COASTLINE WESTBOUND, WE FELT A NOTICEABLE THUD ACCOMPANIED BY A “RIGHT ENGINE OIL PRESSURE” AUDIO ALERT AND FLASHING MASTER WARNING INDICATION FOR 2 SECONDS. WE REDUCED POWER, DECLARED AN EMERGENCY, AND REQUESTED TO RETURN TO CRQ. THE ENGINE PRECAUTIONARY SHUTDOWN CHECKLIST WAS COMPLETED, THE RIGHT ENGINE WAS SHUT DOWN AND SECURED, AND WE CONDUCTED A SINGLE-ENGINE LANDING IN VISUAL CONDITIONS AT CRQ WITHOUT FURTHER COMPLICATION. AFTER CLEARING THE RUNWAY, TOWER ADVISED THAT THE RIGHT ENGINE COWLING WAS MISSING. WE TAXIED TO ATLANTIC AVIATION WITH NO ADDITIONAL INCIDENT. FOLLOWING SHUTDOWN ON THE RAMP, A WALKAROUND INSPECTION REVEALED THAT BOTH THE UPPER AND LOWER RIGHT ENGINE COWLINGS WERE MISSING. DAMAGE WAS ALSO OBSERVED ON THE VERTICAL STABILIZER. NO INJURIES WERE REPORTED.