Endeavour Launch Delayed at Least 72 Hours
April 29, 2011 —About three and a half hours before its scheduled lift-off, NASA announced it had scrubbed the shuttle Endeavour launch that had been set to take place at 3:47 p.m. EDT on Friday, April 30, from Cape Canaveral, Florida. Shuttle Launch Director Mike Leinbach scrubbed the STS-134 launch attempt because of an issue associated with Auxiliary Power Unit 1 heaters, according to NASA.
There will be at least a 72-hour scrub turnaround while engineers assess the issue.
The 14-day STS-134 mission to the International Space Station will deliver a particle physics detector - the Alpha Magnetic Spectrometer-2 (AMS) – that will measure cosmic rays to search for various types of unusual matter, such as dark matter and antimatter. Endeavour will also deliver the Express Logistics Carrier 3, a platform that carries spare parts to sustain station operations after the shuttles are retired from service.
The crew includes Commander Mark Kelly; Pilot Greg H. Johnson; NASA Mission Specialists Michael Fincke, Andrew Feustel, and Greg Chamitoff; and European Space Agency Mission Specialist Roberto Vittori.
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