ISS Assembly Sequence Slip
NASA May Delay Some Shuttle Launches, AP
“NASA will likely delay by as much as a month some space shuttle launches scheduled for next year because of a backlog in processing the shuttles’ external fuel tanks, an agency spokesman said Monday.”
NASA Advisory Council Meeting Notes, SpaceRef
“A back-up chart notes: “Presidential direction to meet Assembly Complete and retire Shuttle by September 2010. 18 remaining Shuttle flights (including ULF1.1). ULF4 & ULF5 are “contingency” flights. Must complete ISS Assembly and launch sustaining H/W to support ISS functionality through 2015. ULF5 is July 2010 (using Current FAWG manifest). Provides only 2 months for slips at the end of the sequence”