Use only the selected NASA source excerpts/images supplied with this task. Identify source ID, edition, physical PDF page, printed page where available, and table/figure/section for factual claims. Preserve conflicts and say when the supplied pack does not answer the question. Do not use this material as operational instructions.

Using only the supplied excerpts and images, what exact numerical pass/fail threshold must a project meet to move from PhaseA to PhaseB? If the pack does not establish it, say so rather than inventing a number.
