Cleanliness Is Next to Airworthiness
At each annual inspection, the regulations mandate that the airplane be cleaned. No mechanic likes this task, but it must be done before inspecting the airplane. Your mechanic will greet you with a smile, and the inspection phase of the annual will go faster when you show up with a clean airplane. Here's a tip for cleaning the belly. Head for a hardware or auto-parts store and get a tub of GOJO — the nonabrasive type, please — a creeper, a pair of safety goggles, a box of throwaway nitrile gloves and some rags. Then get under your airplane and do the "wax on, wax off" routine from nose to tail.