6 steps beyond the 5 Whys - AMMJ

Implement the solutions (corrective actions)
Be clear about who is responsible for
each corrective action. You don’t want
to create the opportunity for people
to be able to pass the buck with “I
thought Bob was going to do it.”
Your RCA should produce a number of corrective actions.
These should be implemented as soon as practically
possible.
Have a mechanism in place by which the implementation
of corrective actions can be tracked. This system should
appoint a single person to each corrective action, and
include a clear timeframe for completion. This allows for
progress to be evaluated.