KENNEDY SPACE CENTER, Florida (CNN) -- NASA scrubbed space shuttle Atlantis' planned Sunday launch after a cut-off sensor designed to gauge the fuel level of the external liquid hydrogen tank failed another test, a space agency spokesman said.
Thursday's launch was postponed after two of the sensors failed pre-flight testing. NASA spokesman George Diller confirmed Sunday's test results.
Launch teams will drain the fuel from the external tank so NASA can perform a troubleshooting procedure in hopes of learning more about the "ECO" sensors, Diller said.
A new launch date was not immediately announced, but Wayne Hale, NASA's shuttle program manager, said last week that if the sensors failed Sunday, it would be unlikely Atlantis could take off during the launch window, which closes Thursday.
Launch teams will drain the fuel from the external tank so NASA can perform a troubleshooting procedure in hopes of learning more about the "ECO" sensors, Diller said.
A new launch date was not immediately announced, but Wayne Hale, NASA's shuttle program manager, said last week that if the sensors failed Sunday, it would be unlikely Atlantis could take off during the launch window, which closes Thursday.
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