Re: First Aircraft Detail
I would definitely look at the aircraft first before deciding on a plan of action and buying products. The Commanche is an older Piper model and may still have the original single stage paint. If may or may not be oxidized which will affect your approach. But, for a general answer, ONR wash, clay and seal. Rejex is an excellent aircraft sealant and sold here at AG. It can be finicky to work with but it gets the job done. There are some aircraft specific products that I can steer your towards but are not sold here at AG so I wont go into detail.
The Commanche is also a retractable gear aircraft. DO NOT degrease the landing gear struts. Also, if you have never worked on an aircraft before, I would highly recommend getting with a pilot and get a good understanding of airframe components and what things do what. For instance, you do not want to clog up the static port and pitot tubes, etc. Lots can go wrong in a hurry.
ED aka Porsche Pilot