twa's zenith occurred in the summer of 1988, when, for the only time, the airline carried more than 50 percent of all transatlantic passengers. every day, boeing 747, lockheed l-1011, and boeing 767 aircraft departed to more than 30 cities in europe, fed by a small but effective domestic operation focused on moving u.s. passengers to new york or other gateway cities for wide-body service across the atlantic, while a similar inter-european operation shuttled non-u.s. passengers to twa's european gateways—london, paris (which was even considered a european hub by twa), and frankfurt — for travel to the united states.