See list belowNOV 16 196767-FM-T-108FM/Deputy Chief501/502 state vector update requirement
During the 501 operation apparently there was no question as to whether state vector updates would be sent. But I gather there may have been some question as to how important they are. This will probably just add to the confusion, but I thought I might redistribute the attached memos written last January which stated that the second update was mandatory and that the first update was only useful to assure that the spacecraft would at least reenter if, for some reason, the second update could not be made.
- Feb 05, 1968 – Average g (4.8σ)
- Jan 20, 1967 – State vector update situation for AS-501 and AS-502 (3.7σ)
- Sep 21, 1966 – Rendezvous search modes of various types (3.5σ)