Delta 1410 was a two-stage Delta 1000-series configuration with the MB-3-powered extended long-tank first stage, four Castor II strap-on motors, and the 2.44-metre AJ10-118F second-stage and fairing arrangement without a solid third stage. Its sole flight successfully launched the GEOS 3 geodynamics and ocean-research satellite from Vandenberg in April 1975.