What type of integration is indicated by a change in the altimeter reading after applying suction to the static system?

The correct answer highlights the concept of static integration. When suction is applied to the static system of an aircraft, it alters the ambient pressure around the static port. This change in pressure is what the altimeter measures to determine the altitude.

In this context, static integration refers to the relationship between the altimeter's reading and the static pressure in the atmosphere. The altimeter is designed to respond to changes in static pressure, which is an important aspect of its operation. When the external pressure decreases (due to suction), the altimeter reacts and reflects this change, thereby altering its reading. This is indicative of the static pressures being integrated within the altimeter system.

Understanding this mechanism is crucial for pilots and technicians, as it directly impacts altitude readings and can affect flight safety if not monitored correctly.

Dynamic integration, pressure integration, and volumetric integration deal with different principles that do not specifically illustrate the behavior of the altimeter in response to static pressure changes like the situation described does.