page_title: STS-129
section_title: S-band Antenna Sub-Assembly (SASA) package
hierarchical_section_title: STS-129 / Mission payload / S-band Antenna Sub-Assembly (SASA) package
caption_attribution_description: English: S-Band Antenna Support Assembly (SASA) and Radio Frequency Group (RFG). The SASA assembly is scheduled to be fly with the Space Shuttle Atlantis (STS 129 Mission) to the International Space Station.
context_page_description: STS-129 was a NASA Space Shuttle mission to the International Space Station. Space Shuttle Atlantis was launched on November 16, 2009 at 14:28 EST, and landed at 09:44 EST on November 27, 2009 on runway 33 at the Kennedy Space Center's Shuttle Landing Facility. It was also the last shuttle launch of the 2000s.
  STS-129 focused on staging spare components outside the station. The 11-day flight included three spacewalks. The payload bay carried two large ExPRESS Logistics Carriers holding two spare gyroscopes, two nitrogen tank assemblies, two pump modules, an ammonia tank assembly, a spare latching end effector for the station's robotic arm, a spare trailing umbilical system for the Mobile Transporter, and a high-pressure gas tank. STS-129 was the first flight of an ExPRESS Logistics Carrier. The completion of this mission left six Space Shuttle flights remaining until the end of the Space Shuttle program, after STS-135 was approved in February 2011.
context_section_description: Atlantis delivered a repaired S-band Antenna Sub-Assembly (SASA) to the ISS which was returned to Earth during the STS-120 mission in October 2007. SASA is a space station antenna assembly consisting of
  Assembly Contingency Radio Frequency Group (RFG or ACRFG)
  SASA Boom
  Avionics Wire Harness
  Major functions of the ACRFG are to transmit/receive radio signals to/from the transponder, amplification of signals to a power level necessary to be acquired by a Tracking Data and Relay Satellite and to broadcast/receive signals through the selected antenna.
  The SASA boom assembly consists of a mast, an extra-vehicular activity (EVA) handle, a harness, a connector panel, a mounting surface for the RFG and a baseplate fitting. The fitting will serve as the structural interface for mounting the SASA to the Zenith 1 truss on the ISS.
  The Avionics Wire Harness installed on the SASA Boom provides operational and heater power to the RFG. Another function of the harness is to send command/status/RF signals to and from RFG.
  SASA package was attached to the sidewall inside the payload bay of Atlantis during the ascent to the ISS. It was transferred from the payload bay to the Zenith 1 truss for installation as a spare by spacewalkers Foreman and Satcher performing EVA 1 on November 19.
caption: The SASA package
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