As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXTERNAL POWER: WHEN ATTEMPTING TO CONNECT THE GPU THE PLUG COULD NOT BE INSERTED ALL THE WAY. UPON FURTHER INSPECTION IT APPEARS THE RECEPTACLE HAS BEEN DAMAGED AND SINGED.//CORRECTIVE ACTION// REMOVED AND REPLACED PROFILE INSULATOR WITH NEW UNIT AND NEW EXTERNAL POWER CONNECTOR IAW EMB 505 AMM 24-41-01 AN IN REFERENCE TO EO NO: E50-24-0002 REV 2 OPS CHECK GOOD.