What was found
UPON APPROACH FOR LANDING ON FLIGHT 5441 IN CHARLOTTE NORTH CAROLINA, THE LEFT ENGINE TORQUE FELL TO BETWEEN 0-500LBS. ALL THE OTHER ENGINE INDICATIONS WERE NORMAL. THE CREW THEN SHUT DOWN THE ENGINE. THE CREW ALSO DID THE EMERGENCY CHECKLIST AND DECLARED AN EMERGENCY. THE AIRCRAFT LANDED SAFELY WITH NO FURTHER INCIDENTS. THE CORRECTIVE ACTION WAS THAT MAINTENANCE REMOVED AND REPLACED LEFT HAND PNUEMATIC TUBE ASSEMBLY P3 AIR FRONT TUBE. NO TEARDOWN WILL BE REQUIRED.