Message posted by Gregos on April 29, 2011 at 9:52:42 PST:

Endeavour Launch Scrubbed
Fri, 29 Apr 2011 09:18:33 AM PDT

Shuttle Launch Director Mike Leinbach has scrubbed today's STS-134 launch attempt because of an issue associated with Auxiliary Power Unit 1 heaters. There will be at least a 48-hour scrub turnaround while engineers assess the issue.

NASA Television will air a news conference later this afternoon.

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