What was found
HAZE, POSSIBLE ELECTRICAL SMOKE IN THE CABIN, CAUSED RETURN FROM DEICE TO GATE. TURNED OUT TO BE HYDRAULIC LEAK IN HYDRAULIC LINE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
HAZE, POSSIBLE ELECTRICAL SMOKE IN THE CABIN, CAUSED RETURN FROM DEICE TO GATE. TURNED OUT TO BE HYDRAULIC LEAK IN HYDRAULIC LINE.