What was found
DURING DESCENT AT 3000 FEET, THE CREW NOTICED A BURNING RUBBER ODOR IN THE CABIN. REMOVED AND REPLACED THE RIGHT RECIRCULATING FAN AIR FILTER IAW AMM 21-25-02. OPERATIONAL CHECKED GOOD. AIRCRAFT WAS GROUNDED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING DESCENT AT 3000 FEET, THE CREW NOTICED A BURNING RUBBER ODOR IN THE CABIN. REMOVED AND REPLACED THE RIGHT RECIRCULATING FAN AIR FILTER IAW AMM 21-25-02. OPERATIONAL CHECKED GOOD. AIRCRAFT WAS GROUNDED.