Why these red flags show up
When red flags appear, it usually means the project is moving forward with open loops. The team is working, but a few foundations are still undefined, so decisions rely on assumptions.
Ownership and access are not fully set
Progress stays smoother when your team has clear access to the latest CAD, drawings, and requirements, and when design intent is documented. When files or intent live outside your process, even small updates take longer, and coordination becomes harder.
Change impact is not mapped
Timelines drift when the consequences of change are not clear. If you cannot quickly estimate what a change affects, cost, tooling, testing, and lead times, then every adjustment adds delay and rework.
Planning is not connected end-to-end
Hardware is one loop. Price targets, feasibility, manufacturing constraints, and validation plans must line up. When these areas move separately, problems show up late, when they are more expensive to fix.