Post implementation reviews provide a rigorous assessment by us, as the independent regulator, of whether the
anticipated impacts and benefits, set out in the original airspace change proposal and decision, have been delivered
and if not to ascertain why and to determine the most appropriate course of action.
The review can be an iterative process and the nature of each review will be determined by the scale and impact of
the airspace change itself. The main stages are shown below.
1. We determine the scope and objectives of the review after discussion with the organisation that requested the change.
This may include:
• A review of what was to be achieved by the change
• Air traffic control/management requirements (safety, delay, capacity efficiencies)
• Military air traffic control/management requirements (if applicable)
• Environmental conclusions
• Effectiveness of the change
• Other benefits or impacts
• Operational impact (feedback gathered from all affected aviation stakeholders)
• A post implementation safety analysis.
2. We identify and confirm the data required from the organisation that requested the change.
3. We may, during our assessment phase, revise the scope and objectives of the review.
4. We may request further information from the organisation that requested the change at any time prior to publication of the report.
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