As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TRIP NR 1162348 CREW REPORTED BURNING ODOR IN THE CABIN. THE ODOR EVENTUALLY REACHED THE COCKPIT. SEVERAL PASSENGERS AND THE COPILOT ALSO REPORTED HEADACHES. THE AIRCRAFT WAS DIVERTED TO MBPV. ON DESCENT THE ACM WAS SWITCHED TO THE APU AND THE ODOR WENT AWAY. MAINTENANCE PLACED THE ACM ON MEL. MAINTENANCE COULD NOT DUPLICATE THE DISCREPANCY. AIRCRAFT WAS RELEASED WITH NO FURTHER EVENTS.