Which statement best describes the difference between 'Conversion' and 'Difference' in QT terminology?

• A. Conversion is training between different MDS; Difference is training in a different aircraft but same MDS
• B. Conversion is training within the same MDS; Difference is training between different MDS
• C. Conversion is training that does not involve aircraft; Difference is training that involves aircraft
• D. Conversion and Difference are the same type of training

Answer: (A)

This question tests how training types are categorized by how much the aircraft changes. Conversion training is used when you move to a different MDS—that is, a different aircraft model or family. It covers learning a new airframe’s systems, procedures, and performance because you’re switching to a different type of aircraft. Difference training, by contrast, handles training on a different aircraft that still belongs to the same MDS, so you focus on the specific differences between those variants while leveraging your existing framework and knowledge for that MDS.

So, conversion being training between different MDS and difference being training on a different aircraft but the same MDS best matches how these concepts are used.