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P1 First Person: A “Delta P” approach to professionalism


By Sergeant William Boyd Kiphart II
St. Louis Metropolitan Police Department
North Patrol Division, District Six

The term “Delta P” is an aviation term referencing a change (Delta) in atmospheric pressure (P). This is a significant concept in aviation due to the fact that where there is a change in atmospheric pressure, all other factors and instruments are affected. This is the one change during the course of a flight that affects all other factors and components of flight characteristics (such as flight instruments require recalibration, altitude and the like change.

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