 Chicago Air held a further option for 16 of the SF-340 aircraft, which would have enabled the carrier to expand services to additional markets in Michigan, Ohio, Missouri and Minnesota.In addition to its low-fare cachet and connections at convenient Midway Airport, Chicago Air introduced several important service improvements to the regional airline industry, including quality complimentary meal service, premium regional beers, wine and cocktails, national and regional newspapers, and many other innovative ground and in-flight seating and amenities.The introduction of non-refundable fares by all competitive carriers and dramatically increased competitive advertising and promotions during the 1986 summer season made the Chicago Air venture a short-lived enterprise.