Final answer:
The planned distance to double-check the programmed distance in the FMS can be found in the company's operations manual.
Step-by-step explanation:
In the Flight Management System (FMS), the planned distance can be found in the company's operations manual. The operations manual includes all the necessary information for the flight, such as performance data, operating procedures, and calculations. It provides the planned distance in order to double-check the programmed distance in the FMS, ensuring accuracy and safety.