What was found
DURING FLIGHT THE CREW SMELLED AN ELECTRICAL BURNING ODOR AND DIVERTED TO SAN MARTIN AIRPORT. PRIOR TO THIS FLIGHT THE AIRCRAFT HAD BEEN PARKED OUTSIDE IN HEAVY RAIN. THE AIRCRAFT WAS VISUALLY INSPECTED BY A COMPANY AMT FOR THE SOURCE OF THE ODOR, WITHOUT IDENTIFYING A DEFINITIVE SOURCE. THE AMT SUSPECTED THE HEATING SYSTEM TO BE THE CAUSE OF THE ODOR. THE AIRCRAFT WAS GROUND RUN AT IDLE AND FLIGHT WITH ALL SYSTEMS OPERATING AND NO ODORS WERE DETECTED. A CHECK FLIGHT WAS PERFORMED IN SIMILAR CONDITIONS TO THE PREVIOUS FLIGHT WITH NO MALFUNCTIONS, ALL SYSTEMS OPERATING CORRECTLY.