As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW REPORTED A BURNING PLASTIC ODOR ON DESCENT. IFS & PILOTS WENT TO HOSPITAL & CLINIC TO SEEK MEDICAL TREATMENT. ACFT WAS CHECKED BY MTC & THEY CONCUR THERE IS A ODOR. REPLACED AVIONICS COOLING EXTRACT FAN IAW AMM 21-26-51 PB 401 & BOTH RECIRCULATION FANS IAW AMM 21-21-51 PB 401. TESTED SERVICEABLE.