Apr 28 1919

From The Space Library

Naval Observatory requested by LCdr. Richard E. Byrd to supply bubble levels for attachment to navigational sextants, thereby providing an artificial horizon for astronomical observations from aircraft.

Unofficial seaplane record made by Navy F5L piloted by Lt. H. B. Grow out of Hampton Roads, which completed a flight of 20 hours and 19 minutes, a distance of 1,250 nautical miles.