interesting cover art, I was wondering why THIS specific plane was chosen for the cover art

The cover of the album features a vintage Lockheed Model 10 Electra aircraft, with similar markings to the one flown by Amelia Earhart in 1937.

This is often mistaken for a Beechcraft Model 18 (a very similar aircraft) and is referred to in the lyrics of "Five Miles Out" ; "lost in static, 18" and "automatic, 18". The aeroplane has registration G-MOVJ, as also referenced in the lyrics (as "Golf Mike Oscar Victor Juliet").

https://en.wikipedia.org/wiki/Five_Miles_Out

The album had "Family Man" which was immediately covered by Hall and Oates who made it a hit.