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Is[1] a WP:RS for the development of the CH-53? My 1962 Observer book of aircraft says that that CH-53 was a direct development of theSikorsky CH-54 Tarhe.Mztourist (talk)08:55, 19 March 2020 (UTC)[reply]

While Air Vectors isn't really a reliable source as such, it is fairly accurate, and uses reliable sources. The information given isn't contradictory, however. The fuselage is obviously a scaled up version of the S-61/SH-3 (S-61R/CH-3C to be specific), while the dynamic systems (rotors, transmission, etc.) are from theS-64, which is Sikorsky's model number for the CH-54, specifically the civil Skycrane. -BilCat (talk)15:38, 19 March 2020 (UTC)[reply]

So Air Vectors isn't RS. What is the RS for the fuselage development?Mztourist (talk)05:03, 20 March 2020 (UTC)[reply]

I'll see if I can find one in my several print sources. -BilCat (talk)05:32, 20 March 2020 (UTC)[reply]

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