What was found
DISCREPANCY: MED CREW SMELLED AN UNUSUAL SMELL IN THE AIRCRAFT AND REPORTED IT TO THE PILOT. THEY DESCRIBED IT AS HOT OR BURNING PLASTIC. CORRECTIVE ACTION: MECHANIC REMOVED CABIN FLOOR BOARDS, INSPECTED AVIONICS BOXES, WIRES, UNDER FLOOR HEATER, FLIGHT COMPARTMENT A/C SYSTEM, DE-ICE SYSTEM, BRAKES, AND ENGINE. PERFORMED GND RUN AND CHECK FLIGHT NO FURTHER DISCREPANCIES.