Southwest Airlines is currently in the rolling_out phase with a high fleet coverage ratio of 86.2%, indicating a strong likelihood of Starlink installation on many aircraft soon. However, there are zero confirmed observations or sightings on the TPA->RDU route, and the perplexity-verified context states zero aircraft currently equipped as of May 2026. Given the rollout status and fleet coverage, the probability is anchored conservatively at 0.30, reflecting the announced rollout and fleet coverage as a floor, but not exceeding the observation rate (0) by more than 0.10 without direct evidence.