FRONTIER AIRLINES Discontinues service to 5 regional cities, which will then be served by Frontier Commuter, a new operation of Combs Airways, Inc. RMN Je 15, 1983 p.93 Parent co., Frontier Holdings, Inc., may not issue stock. RMN Jy 10, 1983 p.80 600 employees volunteer 8 hrs. a month as flying custo- mer service representatives. RMN Jy 24, 1983 p.68 Introduces new uniforms. RMN Ag 7, 1983 p.88 To establish Frontier Horizon to service 5 major markets. RMN Ag 10, 1983 p.77