commuter air carrier Air Texas was operating nonstop Beechcraft 99 service between the airport and Austin (AUS), Dallas Love Field (DAL) and Houston Intercontinental Airport (IAH). In 1974, all TI flights at Tyler were being operated with Convair 600 turboprops with three weekday nonstops to Dallas/Fort Worth (DFW), as well as direct service to Houston and Memphis. In 1975, Texas International had competition to Dallas/Fort Worth as commuter air carrier Metroflight Airlines, a subsidiary of Metro Airlines, was operating seven nonstop de Havilland Canada DHC-6 Twin Otter flights to DFW, while TI had two nonstops with Convair 600s. According to the February 1, 1976 Official Airline Guide, Texas International was operating direct Convair 600 service to Tyler from Austin, Houston (IAH), Midland/Odessa, Shreveport and Wichita Falls. This OAG also lists nineteen weekday Metroflight Twin Otter flights being operated into Tyler, including nine nonstops from Dallas/Fort Worth (DFW), nine nonstops from Longview and one nonstop from Nacogdoches with this latter flight operating direct service from Houston (IAH) and Lufkin. By 1978, Texas International had pulled out of Tyler. In 1979, Metroflight Airlines was operating the only flights to Dallas/Fort Worth with nonstop de Havilland Canada DHC-6 Twin Otter and Short 330 service as well as direct Twin Otters to IAH via Longview and/or Nacogdoches. By 1981, the airline was operating 12 weekday nonstops between Tyler and Dallas/Fort Worth with Short 330s and Twin Otters. Metroflight became an American Eagle carrier operating code sharing flights for American Airlines, and in 1985 was continuing to operate Twin Otter service between Tyler and Dallas/Fort Worth International Airport. In 1985 Air Spirit, a commuter airline, flew Embraer EMB-110 Bandeirante turboprops nonstop to Austin as part of a Texarkana – Tyler – Austin route. In 1989, competition had resumed on the Tyler-Dallas/Fort Worth route: American Eagle Saab 340s and Delta Connection Embraer EMB-110 Bandeirantes (operated by Atlantic Southeast Airlines (ASA) on behalf of Delta Air Lines). The Official Airline Guide lists fourteen weekday flights between Tyler and DFW. By 1991 Delta Connection (ASA) Embraer EMB-120 Brasilias and EMB-110 Bandeirantes were flying to DFW. In 1995, Continental Express was flying Embraer EMB-120 Brasilias to IAH with three weekday nonstops via a code-sharing agreement with Continental Airlines. By 1999 Continental Express had replaced this Brasilia service with smaller Beechcraft 1900Ds with four weekday nonstops. In the mid-1990s, Conquest Airlines, a commuter airline, flew Fairchild Swearingen Metroliners nonstop to