If you wanted dodgy fuel tanks then you couldn't beat the Fairey Fawn from 1926. The over-wing tanks would leak all over the pilot and with sparks coming from the exhausts..... No wonder that the regular RAF decided to keep its DH9As and handed the Fawns over to the Reseve Squadrons in the UK. (This one from 503 Special Reserve Sqn at Waddington).
