Post crash fires are somewhat rare in small airplanes. Some make and models have significantly above average post crash fire history. Somewhat contrary to most beliefs some of the fuselage tank airplanes such as Piper J3 and Aeronca 7AC have lower percentages of post crash fires than wing tank airplanes.
Once again this was not a runway environment accident. The location is stated as 1200 yards east of the runway and estimated 600’ north of the approach end of runway 2. Departure was likely on runway 20.
There had been some rain but photos show vehicles in a farm field near the accident site.
This was not a high density altitude situation. Wind and turbulence may have been a factor.
This was not a Cherokee 140, 160 or 180. All Arrows have constant speed props which significantly improves acceleration compared to the Cherokee 180 with same 180 hp engine.
There is another possibility that I consider remote but must be considered. AD for cracked wing spars on this and other Cherokee series. A fatal crash in FL of an Arrow where the spar failed and the wing came off. The wing in VT accident is separated from the fuselage and laying in front of the fuselage.