ISS EMUs "Grounded"

NASA ISS On-Orbit Status 12 November 2007

“EMU Spacesuit Troubleshooting: During a SSATA (Space Station Airlock Test Article) chamber run on the ground this past Friday, a crew member reported the smell of smoke inside the EMU (Extravehicular Mobility Unit). The run was terminated, and the crew member extracted without incident. A mishap investigation board was formed and has recommended that all life support system operations (power, O2 ops, etc.) for the on-orbit EMUs be terminated until a root cause can be determined. Thus, the on-orbit EMUs are No Go. All other ops, such as suit resizing, can be performed.”