727-100C Convair CV-990A Curtiss C-46 Douglas DC-3 Douglas DC-7C Seven Seas HFB 320 Hansa Jet Lockheed L-049 Constellation Lockheed L-749A Constellation Lockheed L-1049 Super Constellation Martin 2-0-2. Fleet details Fleet in 1967 In November 1967, Modern Air's fleet comprised 16 piston airliners. Deliveries of five former American Airlines Convair CV-990As began in January 1967. Fleet in 1972 In May 1972, Modern Air's fleet comprised nine jet aircraft. 300 people were employed. Accidents and incidents On 8 August 1970, ex-Alaska Convair CV-990A-30A-8 (registration N5603) undershot the runway at Acapulco's Álvarez Airport during a VOR/ILS approach at the end of a ferry/positioning flight that had originated in New York, where 102 charter passengers travelling on a package tour arranged by Asti Mexican Tours had boarded the aircraft for their flight to Mexico City Benito Juárez Airport. Having safely disembarked its passengers at their intended destination, the aircraft was then ferried with only the flight deck and cabin crew on board to Acapulco to pick up another load of 146 charter passengers booked with the same tour operator for their return flight to New York as contemporary Mexican rules governing tour groups visiting the country by air did not permit their arrival at and departure from the same airport. The night time approach to Acapulco Álvarez Airport in rainy and foggy weather resulted in the aircraft colliding with the airport's approach lights before touching down short of the runway, breaking up and catching fire. Initially, it was thought that this had resulted in the death of one of its cabin crew, who had remained unaccounted for during the rescue operation that had saved the other seven, badly injured crew members. When rescue workers returned to the crash site the following morning to retrieve the remains of the missing crew member, the unaccounted for crew member was found in the burnt-out tail section, still alive but seriously injured. After being rushed to the same hospital where the other seven crew members were receiving medical attention, all eight eventually made a full recovery. On 28 May 1971, one of Modern Air's Berlin-based CV-990As with 45 passengers on board en route from Berlin Tegel to Bulgaria was unexpectedly denied permission to enter Bulgarian airspace, as a result of a new policy adopted by that country's communist government to deny any aircraft whose flight had originated or was going to terminate at a West Berlin airport the