Uplink will be on LM-4

A decision was made yesterday which I am sure will make a lot of people happy. ASPO has finally decided to equip the LM-4 with a digital uplink. Obviously, the associated computer programs must be added to the AS-504 LM program. I assume that these are the same as those developed for AS-208 and should present no significant problem.

Apparently it is too late to equip the AS-503 LM in this way, but since we are using the AS-208 program for that mission, that has no influence on our programming requirements. Please take whatever action is appropriate regarding technical direction to MIT.

Terms & Abbreviations


see AS-503


see AS-504


AS-207/208 (also known as AS-278) was to have been the first test of the LM in Earth orbit. It was also to have be a dual mission with the command and lunar modules launched on separate Saturn 1Bs. The mission was cancelled after the Apollo 1 fire and the Saturn 1Bs were used to launch Skylab 3 (AS-207) on July 28, 1973 and Skylab 4 (AS-208) on November 16, 1978. The LM was first tested by Apollo 5 in January 1968.


see AS-207/208


Before the Apollo 1 fire, the mission referred to as AS-503 was an unmanned Earth orbit test flight of the LM and CM scheduled for October 1967. The launch vehicle, SA-503 was used for Apollo 8, December 23 1968.


Before the Apollo 1 fire, the mission referred to as AS-504 was originally scheduled for December 1967. AS-504 eventually launched as Apollo 9, March 3 1969.


Apollo Spacecraft Program Office.


Lunar Module. Earlier it was known as the Lunar Excursion Module and abbreviated “LEM.” Even after the name change, it continued to be pronounced “lem.”


Massachussets Institute of Technology. In these memos, MIT is shorthand for the MIT Instrumentation Laboratory, created and led by avionics pioneer Charles Stark Draper. It is now known as the Charles Stark Draper Laboratory and became independent of MIT in 1973.