its competitors' standard economy fares and significantly lower than those airlines' Super APEX fares. The airline reserved about 60% of its scheduled seats for the new bookable fares. This move marked a major strategic shift in the company's fare structure. Tampa, Florida, was added in 1981 from Gatwick, Manchester and Prestwick, following lobbying from Bob Beckman's client. By that time, the firm had sold both the older, shorter fuselage Boeing 707-138Bs and disposed of one BAC One-Eleven. This left it with 20 aircraft comprising 14 widebodies and six narrowbodies – 11 DC-10s, three A300s, two 707s and four One-Elevens, doubling the size within only five years. Over this period, the number working for Laker Airways and associated companies doubled again to 2,000. During the 1981 summer period, Laker operated up to three daily frequencies each way between Gatwick and JFK and Gatwick and Miami as well as twice daily round-trips between Gatwick and Los Angeles. This made Laker the fourth biggest transatlantic scheduled airline between the UK and US as well as fifth biggest overall. By that time, the airline had carried over two million Skytrain passengers. Widebody era In November 1972, Laker Airways became the first airline outside North America to operate the McDonnell Douglas DC-10 widebody when it took delivery of a pair of new series 10 aircraft from McDonnell Douglas Corporation's (MDC) factory in Long Beach, California, via Japanese lessor Mitsui. Simplified charter rules On 1 April 1973, new charter regulations in the UK, the US and Canada replaced the complicated "affinity group" rules with simplified rules termed "Advance Booking Charters", popularly known as ABC. The following day, a Laker Airways McDonnell-Douglas DC-10 flew the world's inaugural ABC flight from Manchester to Toronto. Laker's first ABC passengers had paid £45 round-trip. The inaugural flight was operated under contract to Laker's Liverpool-based in-house package tour operator Arrowsmith Holidays, a group company since 1967. It was followed by similar ABC services from Prestwick and a three-times-a-week Gatwick–Toronto ABC operation. The latter was operated under contract to Lord Brothers, the airline's London-based in-house tour operator that had been part of the group since 1968 and changed its name to Laker Air Travel in 1974. A third DC-10 series 10 widebody joined the fleet in April 1974 to maintain the airline's commitments in the ABC flights market. (Laker intended to allocate two DC-10s exclusively to Skytrain in anticipation of the start