Transcribed from attached press release: "HUGHES READY FOR TAKE-OFF IN SECOND XF-11 FLIGHT. CULVER CITY, Calif., April 5. Howard Hughes, famed flier-industrialist, recovered from injuries following crash last July 7, is shown here just before he test-piloted today a duplicate of the plane in which he nearly lost his life. He designed and built the plane, designated XF-11, and one of the world's fastest photo-reconnaissance ships, for the Army Air Forces in conjunction with the Air Materiel Command engineers."
Description given with photo: "Hughes Pilots Radar-Equipped Plane Culver City, Calif. -- First passenger plane equipped with radar is flown in demonstration May 1st by Howard Hughes (left) and co-pilot R.C. Loomis over Culver City. Pilots using this equipment will be warned of approaching obstacles by lights flashing on radar panel. Two lights (lefts) with 2,000-foot range, are used to guarantee clearance over mountains; two lights (right) with 500-foot range, are a safety device for approaches and landings. Either set of lights warns against approaching aircraft. Trans-World Airline plans to install radar on its passenger planes. Credit (ACME) 5-3-47."