No real time landing site data processing is planned on C Prime

See list attachedNovember 15, 196868-PA-T-253APA/Chief, Apollo Data Priority CoordinationNo real time landing site data processing is planned on C Prime

In a meeting with Flight Software Branch and Flight Control Division personnel, we concluded that we would not process landing site observa- tions obtained in lunar orbit on the C' in real time in the RTCC unless directed otherwise.

During the C' mission, one of the primary objectives is for the crew to track a pseudo-landing site. This is to collect data to determine how well this can be done on the lunar landing mission in order to target LM descent. It has been proposed that we could actually carry out the same real time computing process in the MCC-H on the C' mission. The advantage of doing this in real time as opposed to post-flight is that we may uncover some subtle problem which post-flight processing would miss. It is to be noted, however, that a complete, high-fidelity rehearsal of this lunar landing mission activity is planned for the F mission which would do this job each better since the spacecraft configuration, crew operations, and MCC-H operations will all be identical to G. Problems encountered during landing site data processing on F could not jeopardize that mission in any way, of course. The dis- advantage in attempting to do this is that in order to do it with con- fidence, RTCC computer time and personnel would be required to check it out and real time operations would have to be established and included in simulations prior to the C' flight. With the flight so imminent it does not seem logical to divert this kind of activity to a non-essential task. Therefore, it is our recommendation that we do not take this additional step on C'.