As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED. COCKPIT AND FORWARD CABIN HAD METALLIC SMELL/ODOR DURING FIRST 10 MINUTES OF FLIGHT. DISSIPATED AFTER 15 MINUTES DURING TAKEOFF ROLL UNTIL PASSING 10000FT. FOUND MIXER FLAP ACTUATOR FAULT. REMOVED AND REPLACED MIXER FLAP ACTUATOR, PER AMM 21-51-52.