What is the purpose of a static system check?

• A. To measure fuel levels in the wings
• B. To ensure that altitude and airspeed instruments provide accurate readings
• C. To check the integrity of the fuel system
• D. To verify communication systems in the cockpit

Answer: (B)

The purpose of a static system check is to ensure that altitude and airspeed instruments provide accurate readings. This process is crucial because these instruments rely on pressure differences to function correctly. A static system check tests the integrity of the static pressure system, which connects to instruments such as the altimeter and airspeed indicator. By verifying that these instruments respond accurately to known pressure changes, maintenance personnel can determine that the instruments will provide reliable information during flight, which is essential for safe aircraft operation.

The other options correspond to different systems and checks that are not within the scope of a static system check. Measuring fuel levels pertains to fuel quantity indicators; checking the integrity of the fuel system relates to fuel lines and components; and verifying communication systems focuses on radio and intercom functionality. Each of these functions is vital in its context but does not align with the specific purpose of a static system check.