As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED WHEN EXTERNAL POWER IS CONNECTED, SMOKE AND FUMES FILL THE COCKPIT. REMOVED AND REPLACED RIGHT DME IAW AMM 34-55-01. OPS CHECKED SATISFACTORY. E & E SYSTEM PURGED IAW CONDITIONAL INSPECTION AMM 05-51-56. AIRCRAFT RELEASED TO SERVICE.