 By the mid-1970s, Dan-Air Engineering's workforce had expanded to more than 800, the vast majority of whom were based at Lasham.The continuing, rapid expansion of the Dan-Air fleet during the 1970s as well as growing third-party work during that period resulted in the opening of Dan-Air Engineering's second maintenance base at Manchester Airport in 1976.The new Manchester base took over Lasham's maintenance of Dan-Air's One-Eleven and Hawker Siddeley 748 fleets.