Boeing 777 - Totally Irresponsible?

Date:         12 Dec 96 03:49:23 
From:         "Bernie Gracy, Jr." <>
Organization: AT&T WorldNet Services
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The keynote speaker of the 1996 Pacific Northwest Software Quality
Conference reviewed the 10^9 (ten to the ninth power) problem.  Years of
testing a PC program are required to believe that it won't fail within a
week of release.  To meet the FAA standard of 10^9 hours of failure free
operation would require 100 years of testing assuming that one could
execute 1 test/sec (there are about 10^7 seconds in a work-year).

He went on to say that because of the millions of lines of code written
for the 777 that it would be impossible to test all of the failure
conditions, and therefore was irresponsible to design and deploy such an
aircraft.  He vowed never to fly on one...

How was the 777 tested?  Is it safe?  Or is it "unsafe at any airspeed?"

Bernie Gracy