As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE ACMS DATA SHOWS INTERMITTENT N2 VALUES FROM OIP REPORT 7. TAKEOFF AND CRUISE ACMS REPORTS SHOW NORMAL PARAMETER. ACFT GROUNDED. R & R NR 2 ENGINE N2 SPEED SENSOR IAW AMM 77-11-02. OPS AND LEAK CHECKED GOOD. ACCOMPLISHED EEC BITE CHECK IAW AMM 71-00-00-700-808-FOO, NO FAULTS NOTED.