File:Martin202-wing root fittings.jpg

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Martin202-wing_root_fittings.jpg ‎(414 × 380 pixels, file size: 91 KB, MIME type: image/jpeg)

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Description
English: An illustration of the wing root of the Martin 2-0-2 aircraft operating as Northwest Orient Airlines Flight 421 that crashed on 29 August 1948 due to structural failure of the wings. From image description: "Schematic section of separation of lower flange showing fatigue area and also sudden increase of depth of flange 'a' to approximately twice the depth as indicated by 'b'."
Date
Source Civil Aeronautics Board. Accident Investigation Report, Northwest Airlines, Inc., Winona, Minnesota, August 29, 1948 [1]
Author Civil Aeronautics Board, US Government

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Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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Date/TimeThumbnailDimensionsUserComment
current20:27, 4 December 2009Thumbnail for version as of 20:27, 4 December 2009414 × 380 (91 KB)Mukkakukaku (talk | contribs)Cropped to remove excess whitespace on margins.
20:18, 4 December 2009Thumbnail for version as of 20:18, 4 December 2009600 × 721 (38 KB)Mukkakukaku (talk | contribs){{Information |Description={{en|1=An illustration of the wing root of the Martin 2-0-2 aircraft operating as Northwest Orient Airlines Flight 421 that crashed on 29 August 1948 due to structural failure of the wings. From image description: "Schematic se

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