As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R GEN FAILURE PRIOR TO 80 KNOTS ON TAKE OFF. ABORTED TAKE OFF AND RETURNED TO GATE. AIRCRAFT GROUNDED BY MAINTENANCE. MAINTENANCE DEFERRED RT GEN. IAW MEL 24-00-1-1. PLACARD INSTALLED, AIRCRAFT RELEASED ETOPS 120. MAINTENANCE PROCEDURES C/W MBCB 08.25/22. AIRCRAFT RETURNED TO SERVICE.