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U.S.
Department of Transportation
Critical
Failures: Key Insights
§Do not be dependent on a single person to rectify a
critical failure
□Flight‐Plan System Crash in 2009 was due to failure of a
single part, which was easily replaceable; but there was only one
technician who was qualified to do it, and it took over six hours for him to arrive and make
the repair
§Systems that need to be highly available will
necessitate elevated labor costs
□If
any failure of the system can be catastrophic, then it is necessary to keep round‐the
clock staff to fix issues