In other words, why did SpaceX miscalculate how much propellant the booster needed. They have landed successfully in April. So what went wrong here?

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    $\begingroup$ If this is the mishap I'm thinking of, they miscalculated how much TEA-TEB the rocket would need to restart the engines during reentry and landing. There was enough propellant, but not enough of this pyrophoric chemical they use to start the engines. Not making this an answer because my memory is so bad that this might be entirely made up. $\endgroup$ Mar 15 at 21:13
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    $\begingroup$ It seems to be that they actually ran out of propellant popularmechanics.com/space/rockets/a21389/… @WayneConrad $\endgroup$ Mar 15 at 21:47
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    $\begingroup$ I'm glad I added that disclaimer then. $\endgroup$ Mar 15 at 21:56
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    $\begingroup$ "liquid oxygen fuel", ugh $\endgroup$ Mar 15 at 21:59
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    $\begingroup$ @OrganicMarble "liquid oxygen fuel" is a special kind of LOX that you have to use with "RP1 oxidizer". $\endgroup$ Mar 15 at 22:05


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