<p>He had intended to say: "One small step for 'A' man, one giant leap for mankind." But he missed out the 'A' to say "One small step for man, one giant leap for mankind."<br /><br />A small note scrawled on the original flight plan for the first moon landing in Armstrong's own hand confirm that the astronaut fluffed his lines, The Sun reported.<br /><br />It is believed that the phrase — perhaps the most famous of the 20th Century — written on the document is the only record of the words.<br />The revealing flight plan was inscribed and signed by Armstrong while in quarantine on his return to earth and handed to NASA press officer John McLeaish.<br />McLeaish authenticated the document while still with Armstrong by writing a declaration on the back of it and dating the item.<br /><br />"This certifies that Neil Armstrong presented this signed page to me on August 9, 1969, while in quarantine following his mission as the first man on the moon," McLeaish wrote.<br />Armstrong's words when he put his first foot on the moon on August 9, 1969, have been a subject of much debate.<br /><br />Armstrong said in his autobiography he had never written the phrase down but experts believe he must have forgotten about writing it directly after his return to earth.<br />The flight plan with the words scribbled on it is now set to be auctioned by a private collector and is stoking up international interest.<br /><br />The item is accompanied by a letter written by McLeaish's wife Patsy, in which she has confirmed that her husband was very proud of the gift from Armstrong.<br />The auction is set to take place on April 13, at Bonhams auctioneers, in New York. The flight plan is expected to fetch 55,000 pounds.<br /><br />"It is an extraordinary item, one of such historical importance," said Andrew Currie, spokesman for Bonhams here.</p>
<p>He had intended to say: "One small step for 'A' man, one giant leap for mankind." But he missed out the 'A' to say "One small step for man, one giant leap for mankind."<br /><br />A small note scrawled on the original flight plan for the first moon landing in Armstrong's own hand confirm that the astronaut fluffed his lines, The Sun reported.<br /><br />It is believed that the phrase — perhaps the most famous of the 20th Century — written on the document is the only record of the words.<br />The revealing flight plan was inscribed and signed by Armstrong while in quarantine on his return to earth and handed to NASA press officer John McLeaish.<br />McLeaish authenticated the document while still with Armstrong by writing a declaration on the back of it and dating the item.<br /><br />"This certifies that Neil Armstrong presented this signed page to me on August 9, 1969, while in quarantine following his mission as the first man on the moon," McLeaish wrote.<br />Armstrong's words when he put his first foot on the moon on August 9, 1969, have been a subject of much debate.<br /><br />Armstrong said in his autobiography he had never written the phrase down but experts believe he must have forgotten about writing it directly after his return to earth.<br />The flight plan with the words scribbled on it is now set to be auctioned by a private collector and is stoking up international interest.<br /><br />The item is accompanied by a letter written by McLeaish's wife Patsy, in which she has confirmed that her husband was very proud of the gift from Armstrong.<br />The auction is set to take place on April 13, at Bonhams auctioneers, in New York. The flight plan is expected to fetch 55,000 pounds.<br /><br />"It is an extraordinary item, one of such historical importance," said Andrew Currie, spokesman for Bonhams here.</p>