How many turnaround cards are kept in the Aircraft Discrepancy book?

The correct answer identifies that 10 turnaround cards are maintained in the Aircraft Discrepancy book. Turnaround cards play a crucial role in tracking discrepancies found during pre-flight inspections and ensuring they are addressed before the aircraft is returned to service. Keeping a consistent, standardized number of turnaround cards, such as 10, helps streamline operations and maintain organization. This number allows for adequate documentation of issues while also ensuring that the aircraft's maintenance history is properly managed without overwhelming the available space in the discrepancy book. The established quantity ensures that all relevant discrepancies can be efficiently tracked and resolved, facilitating smooth maintenance operations and enhancing overall flight safety.