FS2004 – Boulton Paul ‘P-71A flight2000it 10 years ago FS2004 – Boulton Paul ‘P-71A. A passenger canversion of the Boulton Paul P-61 ‘Mailplane, Two examples were delivered to Imperial Airways in February 1935. Missing Navigation lamps added By ByEdward Cook 2 MB FS2004 Boulton Paul Type P.75 OverstrandFS2004 – RAF Boulton Paul BalliolFS2004 – Boulton Paul Sea Balliol