A fascinating memo, written by Shuttle manager Wayne Hale, has been acquired by this site, providing an insight into the thought process behind decisions taken during Atlantis’ two launch attempts.
Troubleshooting will pick up again this morning at Pad 39A, as engineers evaluate the potential cause of the two scrubbed launch attempts, via an LH2 ECO (Engine Cut Off) system that Hale himself asks if “it is now time to consider whether we can live without it.”