As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING STARTUP OF AIRCRAFT N708FE ON FLIGHT 8129 BQN-POS, THE CREW NOTICED A HAZE IN THE COCKPIT THAT SMELLED LIKE SMOKE ALONG WITH THE CAPTAIN'S SIDE INTERCOM AND MICROPHONE NOT WORKING. THE CREW SHUTDOWN THE AIRCRAFT AND MAINTENANCE BEGAN TROUBLESHOOTING. BQN MAINTENANCE COMPLETED AN ENGINE RUN SUCCESSFULLY ON N708FE WITH NO SMOKE DETECTED.