Indicator, Surface Position (SPI), Shuttle, Columbia

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    Indicator, Surface Position (SPI), Shuttle, Columbia

    Surface Position Indicator (SPI); set of 6 meters with yellow arrows; (2) Elevons - degrees; (1) Rudder - degrees; (1) Body Flap - percent; (1) Aileron - degrees; (1) Speed Brake - percent; red command on/off status flag; blue velcro trim around frame; 1 red-capped multipin connector on back.

    1 of 2

    Usage Conditions Apply

    There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page.

    IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu

    View Manifest

    View in Mirador Viewer

    Indicator, Surface Position (SPI), Shuttle, Columbia

    Surface Position Indicator (SPI); set of 6 meters with yellow arrows; (2) Elevons - degrees; (1) Rudder - degrees; (1) Body Flap - percent; (1) Aileron - degrees; (1) Speed Brake - percent; red command on/off status flag; blue velcro trim around frame; 1 red-capped multipin connector on back.

    2 of 2

Display Status:

This object is on display in the Moving Beyond Earth exhibition at the National Air and Space Museum in Washington, DC.

This surface position indicator (SPI) instrument was removed from the Space Shuttle Columbia during its upgrade to an electronic "glass cockpit" in 1999-2000. It displays the actual and commanded positions of the elevons, body flap, rudder, aileron and speed brake. The SPI instrument is active during entry and landing and during the entry portion of emergency return-to-launch site phases of flight.

NASA transferred the set of Columbia's old cockpit instruments to the Museum in 2005.