What is the importance of marking the hydraulic portion of your launch card before/hot seat/after a launch?

Marking the hydraulic portion of the launch card is essential for monitoring hydraulic migration and the usage of the hydraulic system. This practice allows personnel to track how much hydraulic fluid is used during operations and to identify any potential leaks or issues within the system. Monitoring these factors is crucial for maintaining the integrity and reliability of hydraulic-powered components in an aircraft, as hydraulic systems are vital for operations such as landing gear actuation and flight control surfaces.

Effective tracking ensures that any abnormal usage patterns can be identified early, which enhances safety and operational readiness. It supports proactive maintenance measures, thereby preventing failures that could lead to unsafe conditions. Keeping clear and accurate records on the launch card helps the ground crew manage the hydraulic system effectively, ensuring that it remains within its operating parameters throughout the aircraft's lifecycle.