Aptarimas:Richard E. Byrd
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The 1996 release of Byrd's diary of the May 9, 1926 flight revealed erased (but still legible) sextant sights that sharply differ with Byrd's later June 22 typewritten official report to the National Geographic Society. Byrd took a sextant reading of the Sun at 7:07:10 GCT. His erased diary record shows the apparent (observed) solar altitude to have been 19°25'30", while his later official typescript reports the same 7:07:10 apparent solar altitude to have been 18°18'18". On the basis of this and other data in the diary, Dennis Rawlins concluded that Byrd steered accurately, and flew about eighty percent of the distance to the Pole before turning back because of an engine oil leak, but later falsified his official report to support his claim of reaching the pole.