Developing accountability in your teams is one of the keys to successful business. Many people see the "A" word as something that is only negative. When accountability is done properly it can be a liberating force within your team. Being able to trust that those you work with take ownership of their work and strive for a higher level of responsibility when things don't go according to plan, results in greater efficiency, less conflict, and greater levels of trust.
Key to developing accountability is the post-morten. Dissecting your projects after then have ended to understand not only what you could have done better, but what you did right, is key to developing a high functioning team. Having honest conversations through using conversational intelligence helps you in this process. If people continually avoid the difficult conversations and do not get to the core of what happened, it is impossible to move forward and you are likely to face the same problems in future projects. Remember the saying "past is prologue" which means that history sets the context for the present. If we do not learn from history, we are doomed to repeat it.
Use the ideas from the best selling book "The Oz Principle" of See It, Own It, Solve It, and Do It to help people process the steps to better accountability. Remember that it is a process, and that without executing on all 4 levels, you will not see results.