As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TRANSIENT METALLIC ODOR REPORTED IN THE CABIN, DISAPATED ON FIRST REPORT. NO ODOR IN THE COCKPIT. F/A REPORTED A WHINNING SOUND NEAR THE WINDOW EXITS. THE AIRCRAFT WAS GROUNDED. ACCOMPLISHED CARD 05-96-70. IDENTIFIED THE SOURCE AS A POWER PORT OVER E/E ROWS. AFTER POWER PORTS TURNED OFF SOURCE DISIPATED. NO ODORS NOTED.