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The Pratt & Whitney JT3D didn't exist at roll-out for this plane (according to that Wikipedia page); and the photo of the roll-out clearly shows different, and remarkably small engines. These look like earlier JT3 (TF33) engines "first run" in 1950. Namely the J57/JT3C. 2001:569:BB26:5A00:4C3C:72DA:F284:861E (talk) 16:43, 24 January 2024 (UTC)[reply]