Southwest Airlines is currently in a rolling_out status with a high fleet coverage ratio of 86.2%, which would typically anchor the probability near this value. However, perplexity-verified context indicates zero aircraft currently equipped, with rollout expected to begin in summer 2026. No route observations or community sightings support Starlink presence on DAL->PDX. Given the rollout status and fleet coverage, the probability is anchored conservatively at 0.30, reflecting the fleet coverage floor for rolling_out airlines, but adjusted downward due to zero current equipment and no observations.