As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE ACCELERATES EXTREMELY SLOW. THE N2, EGT, AND FUEL FLOW ARE NOT ALIGNED WITH OTHER ENGINES. N1 GAUGE REMAINED AT IDLE. CORRECTIVE ACTION: DISCONNECTED MEC VSB/VBV, FEEDBACK CABLES EXERCISED MEC. RECONNECTED VSV/VBV FEEDBACK CABLES. PERFORMED ENGINE RUN, CK OK.