Southwest Airlines is currently in the rolling_out phase with a high fleet coverage ratio of 86.2%, but no aircraft are yet equipped as of the latest data. There are zero confirmed Starlink observations on the PHL->BNA route, and no recent news or community sightings to suggest active deployment. Given the rollout status and high fleet coverage, the probability is anchored conservatively at 0.30, reflecting the announced rollout beginning summer 2026 and expected fleet growth, but not exceeding the empirical observation rate (0.0) by more than 0.10 without direct evidence.