All 217 passengers on Flight 138 from New York as well as the crew were safely evacuated after landing. One passenger refused treatment for a smoke-related complaint. A Virgin Atlantic statement says the flight was bound for London's Heathrow Airport.
It was the second unusual landing at Boston's Logan International Airport on Thursday. Earlier, an American Airlines jetliner from Chicago declared an emergency when a cockpit light indicated an unspecified potential mechanical problem as it approached the city, but the plane landed without incident.