Southwest Airlines is currently in the announced rollout phase for Starlink with zero aircraft equipped as of the latest data. The fleet coverage is high overall (86.2%), but this reflects future expectations rather than current installations. There are no observed flights with Starlink on the TUL->HOU route, no recent news updates, and no community sightings. Given the rollout status is 'rolling_out' but with zero equipped aircraft, the probability must reflect the current reality rather than fleet coverage. Therefore, the probability is anchored at 0.0 with high confidence.