How often should the standby static ports be checked for accuracy?

The correct response indicates that standby static ports should be checked for accuracy on a weekly basis. This frequency is necessary to ensure that the instruments providing critical altitude and airspeed information are functioning correctly. Static ports are integral to the aircraft's air data systems, which rely on accurate static pressure readings to calculate altitude and airspeed, both vital for safe operation.

Regular weekly checks help detect any potential blockages or malfunctions early, thus preventing inaccuracies that could lead to hazardous flying conditions. It’s more frequent than monthly or quarterly checks, reflecting the need for ongoing reliability in the instruments that rely on these static ports. Ensuring accuracy in instruments is a continuous responsibility for flight crews, hence the importance of this weekly schedule.