A mature safety culture asks more than what went wrong!

By Captain Bassani - ATPL/B-727/DC-10/B-767 - Former Senior Aviation Accident Inspector - SIA PT. - https://www.personalflyer.com.br - captbassani@gmail.com - May/2026

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In aviation, what happens in the real world rarely matches the procedure exactly as it is written. The line operation is dynamic. Workload builds and drops, automation behaves in expected and unexpected ways, weather changes, time pressure appears, and crews constantly adjust to keep the flight within safe limits. That is the reality of the system.

From a Safety-II perspective, the pilot is not only someone who can make a mistake. The pilot is a key part of the system’s ability to adapt, recover, and keep things working when conditions are not ideal. For that reason, safety cannot be understood by asking only “What failed?”. A more useful question is “What usually works, even when the situation is not perfect?”. That is where the real safety margin often lives.

This changes how we look at training, investigation, and SMS. It is no longer enough to study only incidents and accidents. Normal operations need to be observed and understood with the same level of attention. There is a lot to learn from flights that end safely, especially those conducted under pressure, in marginal conditions, or with unexpected changes. These are the situations where professional judgment, experience, and crew coordination make the difference.

In practice, this means looking closely at how procedures are actually used, not just how they are written. It means understanding how crews communicate when the workload increases, how decisions are made when time is limited, and how automation supports or, in some cases, complicates the picture. The system must be designed to support performance in this real environment, not in an idealized one.

Safety-II does not ignore error. It puts it in context. Every safe flight is the result of many small actions done well. Continuous monitoring, cross-checks, small corrections, and timely decisions keep the operation within acceptable limits. These actions are often invisible because nothing goes wrong, but they are exactly what sustain safety.

A mature safety culture does not stop at asking why something broke. It also asks why things worked, what conditions allowed that, and how those conditions can be strengthened and replicated.

In aviation, performance is never isolated. The same crew can perform differently depending on fatigue, workload, airport complexity, weather, operational tempo, and organizational environment. Human performance is always the result of interaction between people, tasks, equipment, procedures, training, and the organization itself.

In the end, safety in aviation is not only about preventing failure. It is about consistently creating the conditions that allow people to perform well, even when the situation is not ideal.

Safe flights,

Captain Luiz BASSANI

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References

Hollnagel, E. (2015). Safety-I and Safety-II. https://erikhollnagel.com/ideas/safety-i%20and%20safety-ii.html

Hollnagel, E. (2017). Safety-II in practice: Developing the resilience potentials. Routledge. https://www.routledge.com/Safety-II-in-Practice-Developing-the-Resilience-Potentials/Hollnagel/p/book/9781138708921

Dekker, S. (2014). Safety differently: Human factors for a new era (2nd ed.). https://sidneydekker.com/safety-differently

International Civil Aviation Organization. (n.d.). Human performance. https://www.icao.int/operational-safety/HP

International Civil Aviation Organization. (n.d.). Human performance principles. https://www.icao.int/operational-safety/HP/HPP

European Organisation for the Safety of Air Navigation. (n.d.). Work-as-imagined & work-as-done. https://www.eurocontrol.int/sites/default/files/publication/files/hindsight25.pdf

University of Southampton. (n.d.). Aviation human factors at the University of Southampton. https://skybrary.aero/sites/default/files/bookshelf/5853.pdf

Swinburne University of Technology. (n.d.). Human factors and performance in aviation. https://www.swinburne.edu.au/course/unit/a/ava20001/

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