What was found
PILOT REPORTED A STRONG FUEL SMELL IN CABIN, NOTING THAT THE HEATER WAS OFF DURING FLIGHT. PERFORMED AN OPERATIONAL CHECK OF THE HEATER, INSPECTED THE FUEL LINES & COMPONENTS, NO FUEL LEAKS OR SMELLS NOTED AT THIS TIME. APPLIED TDMI OF RT WING FUEL PANEL SEEP, UPON FIX OF PANEL SEEP, INSPECTED & FOUND LT ENG FUEL LINE LOOSE. SECURED THE FUEL LINE & LEAK CHECKED WITH NO FURTHER DISCREPANCIES NOTED.