Which of the following represents a status change for an aircrew member in training?

Transitioning from Non-Mission Ready (NMR) to Basic Aircrew Qualification (BAQ) clearly indicates a significant progression in the status of an aircrew member in training. This transition reflects a substantial milestone in their development, as moving from NMR to BAQ signifies that the individual has acquired the necessary skills and knowledge to operate in a crew capacity. This change is both a recognition of their training efforts and a crucial step toward becoming fully qualified aircrew.

Other options do not represent a change in training status. Completion of Annual Reviews is essential for maintaining qualifications but does not inherently signify a status change in the training context. Switching aircraft types generally relates to transitioning tactical knowledge or experience but does not indicate a formal status progression in training. Achieving combat readiness is a critical achievement but often occurs after the individual has reached full qualification status, making it a status of readiness rather than a change in training status.