Shuttle Avionics Integration Laboratory

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Astronaut Claude Nicollier in the SAIL Shuttle cockpit simulator, 1983
Astronaut Claude Nicollier in the SAIL Shuttle cockpit simulator, 1983

The Shuttle Avionics Integration Laboratory is a facility at Lyndon B. Johnson Space Center in Houston, Texas.

It is used to test and verify new software, as well as new avionics, for the Space Shuttle before they are installed and flown.

The testing process is extensive and rigorous; the software on the Shuttle is often considered to be among the most bug-free of operational systems.

The laboratory contains a complete avionics mock-up of a Shuttle, designated OV-095. Whilst only a skeleton, all the electronics are identical in position and type to those used on the Shuttle; it is a sufficiently faithful replica that crews often prefer to use it to train on, rather than the actual simulators.