File:Boeing 40 engine mounting NACA Aircraft Circular 52.jpg

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Description	English: Boeing 40 engine mounting photo from NACA Aircraft Circular 52
Date	1 August 1927
Source	https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930090629.pdf
Author	NACA Aircraft Circulars

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	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	18:20, 13 May 2018		1,348 × 980 (212 KB)	Stuffy Carrot (talk \| contribs)	User created page with UploadWizard

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Date and time of data generation	11:00, 13 May 2018
Orientation	Normal
Software used	Windows Photo Editor 10.0.10011.16384
File change date and time	11:14, 13 May 2018
Date and time of digitizing	11:00, 13 May 2018
DateTimeOriginal subseconds	00
DateTimeDigitized subseconds	00
Color space	sRGB

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File:Boeing 40 engine mounting NACA Aircraft Circular 52.jpg

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1 August 1927^Gregorian

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