When do all the yellow pages of a MM01 get removed?

The correct answer is that the yellow pages of a MM01 get removed when they are updated. The yellow pages generally contain information that can become outdated or inaccurate over time. When new or revised data is introduced, it's crucial to remove the old yellow pages to maintain the accuracy and reliability of the information being used for flight operations.

This process ensures that flight crews have the most current information at their disposal, which is vital for compliance with safety and operational standards. By replacing old data with updated materials, the crew can make informed decisions that enhance safety during missions. Maintaining current operational data helps minimize risks associated with outdated information.

The other choices fail to capture the importance of keeping relevant flight information accurate and up-to-date, focusing instead on different timing aspects rather than the implications of updating crucial data.