See list attachedJuly 16, 196969-PA-T-111APA/Chief, Apollo Data Priority CoordinationChange in delayed PDI Descent targeting procedures
This probably doesn't amount to a gnat's elbow to you, but I would like to change something in a memo that I just sent out the other day dealing with spacecraft state vector updating if we delay PDI one rev. Previously we planned to leave the state vector in the LM computer alone but to change the landing site position (RLS) to account for propagation error for the extra rev. Since then there has been a big flap brought about by our discovery that the command module is making uncoupled attitude maneu- vers which cause surprisingly large perturbation to the orbit. In order to minimize these effects in the descent targeting for the delayed PDI situation, we have concluded that it is best to redetermine the LM state vector based on the newer MSFN tracking (revs 12 and 13) and uplink it to the LM if PDI is delayed. Since the RLS already has been compensated properly for the associated propagation errors, it does not need to be changed.