What was found
MECHANIC NOTICED SMOKE COMING FROM THE GPU PLUG WHILE AIRCRAFT WAS PARKED AT THE GATE. REPLACED THE EXTERNAL POWER RECEPTACLE AND MULTIPLE AVIONICS COMPONENTS DUE TO CONTAMINATION FROM FIRE EXTINGUISHER CHEMICALS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
MECHANIC NOTICED SMOKE COMING FROM THE GPU PLUG WHILE AIRCRAFT WAS PARKED AT THE GATE. REPLACED THE EXTERNAL POWER RECEPTACLE AND MULTIPLE AVIONICS COMPONENTS DUE TO CONTAMINATION FROM FIRE EXTINGUISHER CHEMICALS.