After days of analysis and one repair spacewalk, NASA
has decided that the shuttle is "safe to fly for
re-entry," a top mission manager said Thursday.
The final issue of concern — a torn thermal blanket just
below the cockpit window that might shed bits of debris
during the shuttle's descent — was cleared off the table
Thursday morning after a series of wind-tunnel tests,
said deputy shuttle program manager Wayne Hale, who
heads Discovery's mission management team.
The tests indicated that even if pieces of cloth debris
blew off and struck the aft section of the orbiter, it
would be "of negligible concern" and pose no threat to
Discovery's safe landing, he said. Under those
circumstances, sending spacewalkers out to snip away the
torn section would have violated the "first, do no harm"
rule, Hale said.
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