As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT GENERATOR TRIPPING ON ENGINE START. SEVERAL POWER LEADS FOUND SLIGHTLY LOOSE ON IDG. SECURED POWER LEADS PER AMM. ACP ENG RUN AT GATE. CKS OKAY. AIRCRAFT RETURN TO GATE. RIGHT ENGINE GENERATOR TRIPPING OFF LINE. REPLACED IDG PER AMM, OPS CK GOOD.