As you read about the Apollo 11 landing, you start to learn of several overlapping malfunctions that we going on in those last few seconds.. (radar malfunction, two computer memory overloads and reboots, boulders in the landing zone, Armstrong flying fast sideways to find a better landing spot, last few seconds of fuel, etc.)
But it was not until I read the book "Chariots for Apollo" that I learned there was a dangerous moment just after they landed.
A pressure line had gotten blocked with frozen propellant, and the tank pressure was building up after the landing. The engineers watching that reading thought they were less than 30 seconds from the landing stage exploding. They were screaming "Get them off the Moon now!" to try to convince flight control to tell Armstrong and Aldrin to launch the ascent stage. But then the blocked line cleared, and the pressure dropped. The mission proceeded as planned. No mention about the problem came out until a long time later.
Chariots for Apollo (Stoff and Pellegrino) http://www.amazon.com/Chariots-Apollo-Untold-Story-Behind/dp/0380802619
But it was not until I read the book "Chariots for Apollo" that I learned there was a dangerous moment just after they landed.
A pressure line had gotten blocked with frozen propellant, and the tank pressure was building up after the landing. The engineers watching that reading thought they were less than 30 seconds from the landing stage exploding. They were screaming "Get them off the Moon now!" to try to convince flight control to tell Armstrong and Aldrin to launch the ascent stage. But then the blocked line cleared, and the pressure dropped. The mission proceeded as planned. No mention about the problem came out until a long time later.
Chariots for Apollo (Stoff and Pellegrino)
http://www.amazon.com/Chariots-Apollo-Untold-Story-Behind/dp/0380802619