What are Lessons Learned? - Continued

An example of a specific lesson learned is a scenario where an in-flight engine fire and shutdown is attributed to improper maintenance that was caused by a poorly written maintenance procedure. The lessons learned from this event would indicate that the poorly written maintenance procedure resulted in the improper maintenance action causing the fire and engine shutdown. The lesson learned would be applicable to the specific maintenance procedure.

High level broad lessons learned are very important to identify because the follow-on and corrective actions are global and can mitigate the risk of similar occurrences to products beyond the specific event.

An example of a high level lesson learned is a scenario where modifications are made to an airplane for installing an in-flight entertainment system that results in an unsafe condition because the airplane safety features and concepts of the type design were not adhered to. The high level lesson learned would be that installation of systems and modifications to an airplane should not invalidate the safety strategies designed into the aircraft.

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