[stansdds]

The lighter areas of the wing are actually fabric and plywood areas, these tended to fade faster than metal areas. Also note the leading edge wing root area, the spot over the oil cooler/intercooler/carburetor air intake, it is very light because the paint has been worn away from mechanics standing on that area while servicing the engine, placing starter cartridges, adding oil and repairing anything inside the engine accessory area. You can also see the spring loaded step pad for access to the cockpit is very worn.