What was found
CLT/OAJ - FLT 5151 - WHILE AT CRUISE ALTITUDE, THE LEFT EGT AND TORQUE STARTED TO FLUCTUATE. THIS WAS WITH SRL ON OR OFF. AIRCREW MADE A PRECAUTIONARY ENGINE SHUTDOWN. NO IN-FLIGHT EMERGENCY WAS DECLARED. AIRCRAFT LANDED AT OAJ WITH NO OTHER PROBLEMS. MAINTENANCE FROM CLT DEPLOYED TO OAJ. MAINTENANCE PERFORMED TTL, SRL, AND DELTA P/P ENGINE POWER RUNS. MAINTENANCE FOUND THE POWER LEVER, LOWER FLIGHT IDLE COVER ATTACHMENT SCREW HAD BACKED OUT AND WAS INTERFERRING WITH THE RIGHT POWER LEVER. RE-TORQUED SCREW, PERFORMED ENGINE RUN SHEET. ENGINE CHECKED GOOD. NO REPEATS AS OF TODAY. (X)