English: This is a technical drawing illustrating the components and guidance signals of an aircraft automatic landing system and their use in successive phases of an automatic landing.
Date
Source
The source (as acknowledged in the article)is a reference in the Autoland article: J. S. Shayler (1958) The application to civil aviation of an automatic landing system, R.A.E Technical Note No. BL.47 pp 4 & 8. [National Archives AVIA 6/17826]. It is public domain. Crown copyright expired in 2008 (that has been confirmed by National Archives).
UK National Archives have given permission for this use in the following terms: "The National Archives does not normally permit the use of its material on Wikipedia. However, since this diagram has been published before, and would be central to the article, and Crown Copyright expired on it in 2008, we can permit its use in this case at a modest resolution. I would suggest that you remove the BL reference and ‘fig 1’, and don’t label it with any copyright or credit to The National Archives".
Other versions
The diagram has previously been republished in two of the other references in the Wikipedia article, 1959 and 2001 respectively.
The original description page was here. All following user names refer to en.wikipedia.
2010-05-29 15:59 Roy Easson 678×466× (77513 bytes) The source is a reference in the Autoland artice:J. S. Shayler (1958) The application to civil aviation of an automatic landing system, R.A.E Technical Note No. BL.47 pp 4 & 8. [National Archives AVIA 6/17826]. It is public domain - National Archives h
2010-05-29 15:40 Roy Easson 1938×1332× (310964 bytes) The source is a reference in the Autoland article: J. S. Shayler (1958) The application to civil aviation of an automatic landing system, R.A.E Technical Note No. BL.47 pp 4 & 8. [National Archives AVIA 6/17826]. It is public domain. Crown copyright exp
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