Photograph: With standard gate turntimes of 20 min., Southwest Airlines doesn't have much time for troubleshooting, so its line mechanics are expected to be proficient in all aircraft, airframe and avionics problems. Southwest Airlines Not too many people in this business would take issue with Doug Macnair's take on the importance of line maintenance: ``It's probably the most critical function in the daily operations of any aviation operator,'' said the vice president of ...


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