Discovery's crew was awakened at 10:09 p.m. CDT by the song "Big Rock Candy Mountain," by Harry McClintock for Mission Specialist Andy Thomas. The Space Station crew was awakened at 10:39 p.m. CDT by a tone onboard.
Mission managers decided to remove two gap fillers that are protruding from areas between heat-shielding tile on the Shuttle's underbelly. It is a relatively simple process that can be accomplished as an add-on task to Wednesday's spacewalk.
During the spacewalk, Mission Specialist Steve Robinson will venture under the Space Shuttle on the tip of the Station's robotic arm, locate the protrusions and gently tug until they come out. If that does not work, Robinson will have tools to cut off the protrusions.
Robinson, fellow spacewalker Soichi Noguchi and spacewalk choreographer Andy Thomas will spend time Tuesday assembling a hack saw for the removal job and reviewing the new procedure.
All of the Shuttle and Station crewmembers will participate in a news conference at 4:59 a.m. CDT. Krikalev and Phillips will be interviewed by reporters at Mission Control Moscow at 5:45 a.m. CDT. It will be replayed with translation on NASA TV at 6:15 a.m. CDT.
At 6:39 a.m. CDT Discovery Pilot Jim Kelly and Mission Specialist Wendy Lawrence will grapple the External Stowage Platform-2 (ESP-2) and unberth it from Discovery's payload bay. This is in preparation for the hardware's installation at the beginning of Wednesday's spacewalk. Preparing the ESP-2 Tuesday provides the extra time for the tile gap filler task during the spacewalk.
Before the Shuttle and Station crews go to sleep, the hatch will be closed between the two vehicles and the Shuttle's cabin will be depressurized to 10.2 psi on the eve of the last spacewalk. The crews are scheduled to go to sleep about 2:09 p.m. CDT.