Mr. Z.,
as well, check the annotated PDI to Touchdown video.

https://youtu.be/RONIax0_1ec?t=755

“When their Quantity light comes on, MCC reckon they will have 5.6% or 114 seconds of fuel remaining.”
“MCC begin a 94 second count that leads to a ‘bingo’ call; either land or abort now.”

–the module then lands approximately 20 seconds before the bingo call.

When that timer gets to zero, there is still some fuel remaining: “…Neil will have 20 seconds to land, if he thinks he can get down in time. Otherwise, he will have to abort immediately.” As Jim Davis indicated, it requires some descent engine fuel to perform the abort.

On that page there’s a wonderful quote from Armstrong about what he was thinking during the landing, and his estimate for how high up they could be when fuel runs out, and still land successfully:

“I did know that if I could have my speed stabilized and attitude stabilized, I could fall from a fairly good height, perhaps maybe forty feet or more in the low lunar gravity, (and) the gear would absorb that much fall. So I was perhaps probably less concerned about it than a lot of people watching down here on Earth… I would certainly prefer that drop to trying to go through the abort sequence at that altitude.”

Jim Davis: When I get home tomorrow I will take a look, as I have it in my home library..

Jim Davis: Can you provide me a source? I suspect you are right and I am wrong, but I want a confirmation.

This is a common misconception. The times actually refer to how much time Armstrong has before he can no longer abort the landing; he will then be absolutely committed to landing the LM. An abort at this stage of the landing sequence required a full thrust descent engine firing which would gain enough altitude for the ascent engine to be readied for firing before crashing on the moon.

So when the Eagle landed it was actually about 15 seconds from entering the so called “dead man zone” when it must land or crash. It was not 15 seconds from running out of fuel.

Annotated Apollo 11 landing- PDI to Touchdown
Apollo Flight Journal 2014
https://youtu.be/RONIax0_1ec
14:57

“This day and age we’re living in, gives cause for apprehension.
With speed and new invention, and things like fourth dimension.
Yet we get a trifle weary, with Mr. Einstein’s theory.
So we must get down to earth at times , relax relieve the tension.
And no matter what the progress , or what may yet be proved.
The simple facts of life are such, they cannot be removed.”

(It’s still the same old story, a fight for love and glory, a case of do or die….)

A repeat from me–

Behind the Apollo 11 on-board computer
NASA programmer Don Eyles
July 15, 2019
https://youtu.be/z4cn93H6sM0
7:17

Apollo 11 Descent:
Film and LRO Imagery side-by-side
NASA 2013
https://youtu.be/YKXw_3Pblh8
4:51

Aviate, navigate, communicate.

Neil Armstrong was The Man.

(Could someone hack the Google Doodle and fix the astronaut’s left shoulder?)