STS -30 (English Space Transportation System) is a mission name for the U.S. Space Shuttle Atlantis ( OV -104 ) from NASA. The launch took place on 4 May 1989. It was the 29th Space Shuttle mission and the 4th flight of Space Shuttle Atlantis. The main objective of the mission was to suspend the Venus probe Magellan.


  • David Walker ( second space flight), Commander
  • Ronald Grabe ( second space flight), Pilot
  • Norman Thagard ( third space flight), Mission Specialist
  • Mary Cleave ( 2nd space flight), Mission Specialist
  • Mark Lee ( first space flight), Mission Specialist

Mission overview

A first launch attempt on April 28 was stopped at T -31 seconds due to issues with the liquid hydrogen circuit occurred between the external tank and shuttle. At the very start day strong wind delayed the emergency landing in Cape Canaveral countdown to an hour.

The Magellan Venus probe with an IUS upper stage was exposed scheduled shortly after the shuttle launch. In the further course of the mission had to be replaced one of the five main computer in orbit. STS -30 was the first mission in the space shuttle was used to launch an interplanetary spacecraft.

The landing took place on May 8 at Edwards AFB, California. Atlantis was transported back 7 days later by a special aircraft to Cape Canaveral, Florida.