What was found
SMOKE IN CABIN JUST AFTER T/O. REPLACED COALESCER BAGS, INSP BOTH MAIN WHEEL WELLS. HYDRAULIC FLUID OVERFLOW BOTTLES EMPTY AND FOUND RT HYD SYSTEM FILTER LEAKING. SECURED FITTING, LEAK CHECK GOOD. CLEANED LOWER FUSELAGE, RAN ENGINES AND PACKS, NO SMOKE NOTED, RETURNED TO SERVICE.