NASA AD-1 Calendar When: March 7, 2016 all-day Repeats 2016-03-07T00:00:00-08:00 2016-03-08T00:00:00-08:00 Full Width Page NASA AD-1 Lockheed YO-3A Built in 1969, flown in Vietnam 1970-1971. Designed to be acoustically undetectable at night when flown at altitudes of 1,000′ or above.
