Frederick Noonan Precomputed a Running Sunset Fix for Amelia Earhart's Flight from New Guinea to Howlandf July 2, 1937

摘要

During the to Howland flight of the Earhart-Noonan crew, an observation of sunset with the bubble sextant, [ A/c @ 7000 ft, no optical horizon ] at 0719:30 GMT followed by the 0720 GMT radio announcement placed the aircraft close to if not spot on the coordinates pair 159°07'-E; 04°33'.5-S, 27 miles southwest-wards of the Nukumanu Islands, which is unconditional proof that the originally for the March, 1937 Howland to Lae, New Guinea, precomputed great circle trail running 13 stat.miles northwards, prerequisited in many if not all current publications on the subject, was not flown during the in reverse sense voyage of July 2.