It might. Wings have a lot of surface area, so it makes more sense than putting solar on cars. Also, if a plane isn't being constantly used it could be useful

It might. Wings have a lot of surface area, so it makes more sense than putting solar on cars. Also, if a plane isn't being constantly used it could be useful to have it charge while parked (which is also a good argument for putting solar on cars even if it doesn't noticeably improve range). It would also provide a charging option if you have to land at an airstrip that doesn't have an electrical outlet handy.