T-90 seconds and all Charlie Duke could think about was let’s go! There was no fear, no reluctance, no second thoughts. He was consumed with the desire to hear the words Lift-off. He felt this was his one and only chance.
It was immediately clear that Falcon had landed on uneven ground, right on the rim of a small crater; the LM was tipped backward at a slight angle. It turned out that one of the rear feet had landed in a shallow crater.
Craning to look through the triangular window for a glimpse of the land ahead, Scott saw no sign of Hadley Rille.
The SPS engine was used for all the future burns. It was the astronauts ticket home. Any doubt as to whether it could fire raised the question as to whether the mission could continue.