Columbia Accident Investigation Board
The Columbia Accident Investigation Board (CAIB) was NASA’s internal panel that studied the destruction of Space Shuttle Columbia during re-entry on February 1, 2003.
What happened and why: A piece of foam insulation broke off from the shuttle’s external fuel tank just 82 seconds after launch. This debris hit the leading edge of the left wing, damaging heat-shield panels. During re-entry, super-heated gas entered the wing and destroyed the orbiter. This foam shedding from that area had happened on previous flights, usually with minor damage, but this time it caused a fatal failure. Management had treated the debris problem as an acceptable risk and did not order an extra spacewalk to inspect for damage. NASA officials downplayed the risk, comparing it to a Styrofoam cooler blown off a truck.
Findings and recommendations: The CAIB pointed to both an immediate physical cause and organizational problems that allowed the accident to occur. The board issued 29 recommendations to improve shuttle safety.
After the report: NASA was allowed only two more shuttle missions before these changes were to be in place. NASA put all the recommended changes into effect and flew the first post-Columbia mission in 2005. A new inspection system was added: a 50-foot boom on the robotic arm to check for damage within 24 hours of launch. NASA also created a STS-3xx contingency plan to launch a rescue shuttle quickly if needed.
End of the shuttle era: The Space Shuttle program ended with the final flight and landing of Atlantis on July 21, 2011. Plans for Orion, a new capsule to replace the shuttle, evolved from an Apollo-like design to a different program. President Obama signed the NASA Authorization Act in 2010, ending the Constellation program and moving NASA toward the Space Launch System (SLS) and the Multi-Purpose Crew Vehicle (MPCV) for future beyond-Earth-orbit missions.
This page was last edited on 3 February 2026, at 21:03 (CET).