What was found
(CAN) DURING SHORT FINAL APPROACH, THE CO-PILOT OBSERVED FIRE/SPARKS COMING FROM THE EXHAUST STACK ON THE R/H ENGINE, AND HEARD TWO SHORT SERIES OF BANGS. A BRIEF LOSS OF POWER WAS ALSO EXPERIENCED. THE ALTITUDE WAS 500FT AT THIS POINT, SO THE CREW SAFELY LANDED BEFORE SHUTTING DOWN THE ENGINES. NO INJURIES REPORTED.