Aeroplane Monthly 1976-09
A.Ord-Hume - Arpin A-1 /British pre-war ultralights/
The Arpin A-1 at Hanworth shortly after completion in May 1938, showing the roomy two-seat cabin.
The A-1 in 1939 with a 90 h.p. Blackburn Cirrus Minor I, re-positioned pitot head, new nose and static mass balances on rudders and ailerons.
A view showing the three-piece split flaps
Demonstrating a cross-wind landing