Building reliable flight software: the engineering checklist

Reliable flight software begins with explicit failure modes. Define timing budgets, instrument every boundary, reproduce sensor conditions in simulation, and make each safety assumption reviewable.

The strongest teams treat testing as a flight system: unit checks establish local correctness, hardware-in-the-loop validates interfaces, and scenario libraries protect against regressions.

Finally, measure operational behavior. Structured telemetry, traceable releases, and reversible deployments turn production incidents into learnable engineering signals.