What was found
PHX - FLT 2545 - ON TAKEOFF CREW NOTED SPLIT BETWEEN NR 1 AND NR 2 POWER LEVERS. APPROACHING LEVEL OFF THE NR 1 POWER LEVER LOCKED AT MID POSITION. CREW ELECTED TO SHUT DOWN NR 1 ENGINE AND RETURN TO PHOENIX. PERFORMED LEAK CHECK PT6 AND PT7 ON BOTH ENGINES FOR THROTTLE SPLIT. COULD NOT DUPLICATE ON GROUND. FOREIGN OBJECT IN COWLING POSSIBLE INTERFERENCE. (M)