As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE N2 SIGNAL FLUCTUATES DURING TAKEOFF, FOUND ON OIP REPORT 07. ACFT GROUNDED. PERFORMED EEC BITE NR 2 ENGINE IAW AMM 73-21-00-740-803-F00. NO FAULTS FOUND. INSPECTED N2 SENSOR HARNESS CONNECTORS DP1201, DP0506 AND DP0603. NO DEFECTS FOUND. REMOVED AND REPLACED NR 2 ENG. N2 SPEED SENSOR IAW AMM 77-11-02. OPS AND LEAK CHECKED GOOD. NO NEW FAULTS AFTER REPLACEMENT. ALT DEACTIVATION USED IAW CH5 TABLE 3 ITEM 3. ETOPS SYSTEM GROUND VERIFICATION SUCCESSFUL.