Southwest Airlines is currently in a rolling_out status with a high fleet coverage ratio of 86.2%, which normally would imply a high probability on most routes. However, perplexity-verified context and recent data indicate that as of May 2026, Southwest has not yet equipped any aircraft with Starlink, and there are zero confirmed observations on the PWM->BWI route. Given the announced rollout starting summer 2026 and no recent sightings or news, the probability is anchored conservatively near the lower bound of rollout expectations, set at 0.30 to reflect the announced rollout status and fleet coverage floor, but not exceeding observed evidence which is zero.