What do the standby static ports supply static pressure to?

The standby static ports play a crucial role in providing static pressure to both the primary flight display and the altimeters. In aviation systems, static pressure is vital for the correct operation of these instruments, as they rely on this pressure to determine altitude and provide accurate readings for pilots.

The primary flight display utilizes static pressure to aid in showing the aircraft's altitude, airspeed, and vertical speed, ensuring that the pilot has real-time and accurate information about the aircraft's flight status. Similarly, the altimeters use static pressure to measure the height of the aircraft above sea level by comparing the ambient atmospheric pressure with a standard reference.

By having standby static ports supply pressure to both of these systems, redundancy is built into the aircraft's systems. This becomes especially important in cases where primary static ports may become blocked or malfunction, as it ensures that the critical flight information remains available for safe operation.