As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 GENERATOR SOURCE OFF LIGHT ON DURING DESCENT. RAN CHECKLIST GENERATOR DID NOT COME BACK. APU NOW POWERING NR 1 SIDE. ACFT GROUNDED. REPLACED NR 1 ENGINE IDG IAW AMM 24-11-11. PERFORMED IDLE POWER LEAK CHECK IAW AMM 71-00-00. NO LEAKS NOTED. PERFORMED NR 1 IDG OPS TEST IAW AMM 24-11-00. ALL INDICATION NORMAL.