1946 - first test flight of the XB-35

 

GCB-35 Take-Off: Successful test flight of the XB-35, shown here leaving the ground, marked culmination of pears of development by Northrop Aircraft, Inc., and an expenditure of millions of dollars. On the 44-minute, 85-mile first flight of the Flying Wing from Northrop Field to the AAF's Muroc test base in California, the pilot reported huge plane lived up to pre-flight expectations. (Schmidt photo) 

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Aviation Week | July 8, 1946