What was found
DEPARTED WAS NORMAL. PASSING THROUGH 1000AGL, RT ENGINE QUIT. NO INDICATION, TORQUE READ 0%, AND LATER TORQUE INCREASED BACK TO 60% & BACK TO 0%. QRH FOLLOWED AND SECURED RT ENGINE. DECLARED AN EMERGENCY, RETURNED TO DEPARTURE, & LANDED WITHOUT INCIDENT. INSPECTED RT ENGINE & TRIED A GROUND START WHICH VERIFIED THE RT ENGINE WOULD NOT GO INTO AUTO-RESTART MODE. INSPECTED AND TROUBLE SHOT SYSTEMS, AND FOUND THAT ENGINE WOULD SHUT DOWN WITH NO NTS. REMOVED AND REPLACED THE NTS ORIFICE AND THE BETA TRANSFER TUBE, ADJUSTED NTS LOAD ARMS AND REPLACED NTS VALVE. GROUND RAN ENGINE AND FOUND OPERATING WITHIN LIMITS AND NO SUBSEQUENT ISSUES HAVE BEEN REPORTED.