Which of the following is not considered a historizable attribute of a platform?

The distinction of which attributes are considered historizable primarily pertains to whether the attribute reflects a state or event that needs to be tracked over time for analysis. In this context, operating temperature does not fit the criteria for being a historizable attribute when compared to the other options.

Engine failures, platform scan times, and operating pressures are all events or conditions that can have significant implications on the performance and operation of the platform. Tracking these attributes over time allows for a better understanding of performance trends, helps in predictive maintenance, and supports troubleshooting efforts.

On the other hand, while operating temperature is indeed important for the overall functionality and safety of the platform, it is typically monitored in real-time without the necessity for historical tracking in the same manner. Its criticality lies more in immediate safety checks rather than in long-term historical data analysis. Thus, it is not classified as a historizable attribute in this context.