A fact from Yakovlev Yak-140 appeared on Wikipedia's Main Page in the Did you know column on 12 November 2009 (check views). The text of the entry was as follows:
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The article's last two paragraphs jump around quita a bit, time-wise. The engine wasn't ready until 1956, and then proved to be too powerful (requiring a rebuild, from the looks of it), but the air ministry forbade testing in early 1956?--Piledhigheranddeeper (talk) 19:22, 12 November 2009 (UTC)[reply]
Not at all, the engine was estimated not to be available until '56 so they went ahead and used an AM-9 instead, but MAP prevented it from actually flying in 55.--Sturmvogel 66 (talk) 22:33, 12 November 2009 (UTC)[reply]
SupportOppose No, two entirely separate aircraft developed around the same time using different engines. Read a bit more carefully.--Sturmvogel 66 (talk) 15:14, 6 May 2010 (UTC)[reply]
Are you saying there were two different aircraft types assigned the Yak-140 designation? Or that there is an actual company called Yakolev that also used the "Yak" prefix? - BilCat (talk) 15:24, 6 May 2010 (UTC)[reply]
Support - Actually, they do appear to be the smae aircraft, both the AM-11 and AM-9 being mentioned in both articles. The other specs are quite close too. However, the editor who wrote Yakolev article has had trouble getting his facts right in other articles, so I wouldn't use any of his material before double-checking with his given source. - BilCat (talk) 15:31, 6 May 2010 (UTC)[reply]
Look at the photos. Yak-1000 has T-tail, cockpit very close to the nose, no visible shock cone in the air intake and cropped delta wing planform. Yak-140 has mid-position tail, conventional swept wing, etc. God knows the Yak-140 article needs to be cleaned up, but it's a legitimate article.--Sturmvogel 66 (talk) 16:16, 6 May 2010 (UTC)[reply]
WP:V states, "All material in Wikipedia mainspace, including everything in articles, lists and captions, must be verifiable." Since this is in mainspace, there should be some way that I, a reader, is able to verify in a reliable source that these other aircraft are of a "comparable role, configuration and era". (t · c) buidhe00:11, 14 August 2020 (UTC)[reply]
The problem is that "comparable role, configuration and era" is a judgement call, one that authors generally don't bother with, so it's not citable. This has led to edit wars over which aircraft should be included as it's entirely subjective. I've deleted it.--Sturmvogel 66 (talk) 14:17, 23 August 2020 (UTC)[reply]
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