The NASA Associate Administrator for Manned Space Flight, in a message to MSC, said he understood that, subsequent to the MSC Flight Readiness Review (FRR) and the NASA Headquarters Readiness Review of the LLTV, additional modifications had been made to that training vehicle.

He requested a return wire indicating the date of the delta Flight Readiness Review and evaluation of the readiness for astronaut LLTV flight. In a reply, several hours later, MSC informed Mueller that a delta FRR had been conducted that date; that the changes in avionics had been extensively ground-checked and demonstrated on two separate test flights on June 9 and June 12; that the MSC board concluded the overall system was ready for astronaut training; and that the plan was to start the Apollo 11 Critical Design Review on the following day.