|Thinking outside the box generates a conflict with what is expected to be in the box.|
If to determine the effectiveness of SMS is to count the “good” data, or to count the times when things goes right rather than the “bad” data SMS has an incredible high success rate since there are very few landing that ends up in a disaster. This view also brings up the old saying that “Any landing you can walk away from is a good landing.” Analysis of aviation safety is, and has been since the beginning, to count undesired data. It is crucial to aviation safety to comprehend undesired data for continuous improvement analysis. Data can be grouped into two groups:
1) Common cause variations (normal operations); and
2) Special cause variations (abnormal operations)
By the way, there are no “good” or “bad” data. Data is emotionless. It is all just data and nothing else.
When counting these variations there is an opportunity for the SMS to be retrieved from this no-man’s land and analyze data for continuous safety improvement. SMS itself cannot fail. It’s fail-free since all it does is to make a recording of operational policies, processes, procedures and practices. SMS is a selfie of the operations.
Birds are the effect of landuse operations.
During the next 12 months the CAP is monitored, trending is applied, and a review is conducted of objectives and goals achievements and the hazard is re-issued a hazard priority to repeat the process as required. These are comprehensive tasks to address just for one type of hazard. At the end of the day there might not be any changes in safety improvement since year after year the birds are migrating across the same route and crossing the approach to the main runway.
In safety it's not the thought that counts.
Both root causes are valid and analyzing contributing factors with one goal in mind of continuous safety improvements. The continuous safety improvement factor is that each one of the root causes integrates with the other by analyzing a common variation of birds, but does this in two distinct and different ways.