How to Perform a Leak Check of the Altimeter

What would happen if the static is leaking during a leak check of the altimeter?

A. indicate climb

B. indicate descent

C. not be affected

Final answer:

If the static system is leaking during a leak check of the altimeter, the VSI would most likely indicate a descent due to the interpreted change in pressure caused by the leak.

When performing a leak check of the altimeter, if the static system is leaking, the Vertical Speed Indicator (VSI) would likely indicate a descent. The reason for this is that the VSI interprets the static leak as a change in pressure, which it translates into an apparent descent.

The static system measures the outside air pressure, which is crucial for various flight instruments, including the altimeter, airspeed indicator, and VSI. If there is a leak in the system, it could alter the pressure measurement, leading to erroneous readings and potentially unsafe flying conditions.

It is important to regularly check and maintain the aircraft's instruments, including the altimeter and associated systems, to ensure the safety and accuracy of flight operations.