航宇局陆地卫星计划办公室请求航天飞机管理人员在1986年4月安排修理或回收失灵的、价值六千万美元的陆地卫星-4。这是继航天飞机修复了太阳峰年卫星和计划今年年底拯救印尼统一-B2卫星之后的又一项预定修理飞行任务。这次飞行将首次验证航天飞 NASA’s Lands Satellite Program Office requested space shuttle managers to arrange for the repair or recovery of a failed land-based satellite worth $ 60 million in April 1986 -4. This is another scheduled repair mission following the restoration of the solar peak satellite by the space shuttle and plans to rescue the unification of Indonesia-B2 satellite by the end of this year. This flight will be the first to verify a space shuttle