Boeing disavowed both scenarios by saying the maximum climb rate for the 747-100 was 3800 feet per minute under ideal conditions and lift with the engines at 100%.
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That’s for a continuous climb. The TWA800 rear section climbed briefly and ended with a stall and ballistic descent, an entirely different scenario.
No, moon, it's for any climb at all. It is what the airframe is capable of doing under power, with the lift that is available from that wing and engine combination, at that weight configuration at that altitude. It's a bit more at a lower altitude and a bit less at a higher altitude due to air densities. There is NO WAY a powerless, truncated, out-of-balance, non-aerodynamic plane in stall can climb 3800 or 1200 feet because the plane will go into stall immediately. You are making a ridiculous claim, as did the CIA and the NTSB when they presented those cartoons. Their purpose was to convince the low information voters with smoke and mirrors. Apparently they succeeded.