Atlantis launched from Kennedy Space Center on November 26, 1985 at 7:29 PM EST and landed at Edwards Air Force Base on December 3 at 1:33 PM PST. The shuttle orbited 109 times at an altitude of 225 nautical miles at an inclination of 57 degrees and travelled 2.8 million miles.
Three communications satellites were deployed: MORE LOS-B (Mexico), AUSSAT-2 (Australia) and SATCOM KU-2 (RCA Americom). MORELOS-B and AUSSAT-2 were attached to the Payload Assist Module-D motors, SATCOM KU-2 to a PAM-D2 designed for heavier payloads.
Two experiments were conducted to test assembling erectable structures in space: Experimental Assembly of Structures in Extravehicular Activity (EASE) and Assembly Concept for Construction of Erectable Space Structure (ACCESS).
The experiments required two space walks by Spring and Ross lasting five hours, 32 minutes, and six hours, 38 minutes, respectively. Middeck payloads: Continuous Flow Electrophoresis System (CFES); Diffusive Mixing of Organic Solutions (DMOS); Morelos Payload Specialist Experiments (MPSE) and Orbiter Experiments (OEX). In payload bay: Get Away Special and IMAX Cargo Bay Camera (ICBC).
Atlantis was crewed by Commander Brewster H. Shaw, Pilot Brian D. O’Connor, Mission Specialists Mary L. Cleave, Sherwood C. Spring, and Jerry L. Ross, and Payload Specialists Charles D. Walker, and Rudolfo Neri Vela (Mexico, he is the first and only Mexican to travel in space.)