East Africa  1927.  Experimental Service - Capt. TA  Gladstone flight . First flight by the Fairy III D Return partial route - the leg from Kishumu, Feb 15 arrived at Khartoum on Feb.  red official circular cachet 'Kenya Sudan 1 air mail Feb 15'.  200 letters were flown the entire return route, only 100 on this leg. Envelope signed by pilot Smith.