What was found
DURING CLIMB, AN INTERMITTENT AND CONTINUOUS FAULT WAS PRESENTED, NR 1 ENGINE THRUST REVERSE UNLOCKED. THE FAULT FLASHED AND DISAPPEARED CONTINUOUSLY. ENGINE CONTROL UNIT WAS REMOVED AND A NEW ECU WAS INSTALLED IAW AMM 73-21-60, PB 401, SUBTASK 23-21-60-800-072-A. ALL TESTS RELATED WERE SATISFACTORY ON GROUND IAW AMM 73-25-34-000-040B THE EIU WAS REMOVED AND IAW AMM 73-25-34-400-0408 AND THE EIU WAS INSTALLED, OPS TEST OF THE EIU WAS SATISFAC TORY IAW AMM 73-25-34-710-043.