What was found
WHILE INTERROGATING SCHEDULED MAINTENANCE TASK DISPLAY PER TASK CARD NUMBER 31-005-00, FOUND FAULT CODE 73-44633, " FAN SPEED (N1) SENSOR LOW TOTH SIGNAL IS INVALID" FOR ENGINE #2. GROUNDED - YES. CONSULTED IFIM TASK G73-20-00-810-932, REMOVED ENGINE #2 N1 SENSOR REF AMM 77-12-01 ASA 38869 09/08/23 VERIFIED WITH BOROSCOPE THERE WAS NO SHIM AT THIS TIME ASA 28062 REF AMM 77-12-01 ASA 28062 09/08/23 INSTALLED NEW N1 SENSOR REF AMM 77-12-01, PART HAS BEEN ETOPS VERIFIED BY MTX CONTROL, SEAMC PETER VERIFIED. OPS TEST GOOD, NO FURTHER DISCREPANCIES NOTED.