Lockheed A-29 HudsonLockheed Hudson airplane model. Although Lend Lease Hudsons were assigned USAAF attack series designations A 28 and A 29 and were given USAAF serial numbers, very few of these aircraft actually served with the USAAF. Most examples went directly to the RAF, the RAAF, or the RNZAF. Only 153 A 29 LOs equipped with a single flexible 0. 50 inch machine gun in an open position replacing the Boulton Paul dorsal turret of the standard aircraft were retained