Phase I is intended to demonstrate a feasibility concept and the proposal should include a proposed methodology for evaluating the concept, whether that is through real-life data or a test-data set created for this purpose.

This clarification is useful for Phase I scoping because comprehensive health modeling may require multiple data categories, including maintenance records, vehicle readiness checks, environmental conditions, operating context, and other structured safety signals. It would be helpful to know whether Phase I must include a working model trained on real fleet maintenance records, or whether a detailed integration design and feasibility framework for combining maintenance, environmental, and operational data is acceptable as a Phase I deliverable.