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AIRPORT MASTER PLAN <br />TABLE 4-8 <br />FUTURE FLEET MIX MTOW AND GEAR CONFIGURATIONS <br />SAN MARCOS REGIONAL AIRPORT <br />AircraftGear ConfigurationMTOW (Lbs) <br />Boeing 737-800 Double Wheel174,200 <br />Bombardier Q400 Double Wheel65,200 <br />CRJ 200 Double Wheel53,000 <br /> <br />Source: Aircraft manufacturer websites, FAA Aircraft Database. <br />The key driver of future runway weight bearing capacity requirements for the San <br />Marcos Regional Airport will be the operation of the Bombardier Q400 and Boeing <br />737-800 aircraft at the airport. <br />runways. As a result, runway pavement strengthening should be a consideration in <br />the future development of the runways. A priority for runway strengthening should <br />be Runway 17/35 and Runway 13/31 as both of these runways are the most <br />frequently utilized at the airport because they have the best wind coverage but <br />have the lowest weight bearing capacity. <br />Instrument Approach Procedures (IAPs) are critical to ensuring the usability of an <br />airport during poor weather conditions. IAPs provide guidance to pilots via land- <br />based equipment or GPS satellites that aid them in executing an approach to land <br />on a runway when a visual approach to the runway is not possible. The types of <br />IAPs vary widely, however, they cangenerally be segmented into three primary <br />categories: precision, non-precision, and circling approaches. Precision instrument <br />approaches are approaches where a pilot is provided with both vertical and <br />horizontal guidance and the visibility minimums for the approach are below ¾ of a <br />mile. Non-precision instrument approaches are any straight-in instrument <br />approaches with visibility minimums not lower than ¾ of a mile. Circling <br />approaches are instrument approaches that do not provide an aircraft with a <br />straight-in approach to a runway. <br />The San Marcos Regional Airport currently has a precision instrument approach to <br />Runway 13 and non-precision approaches to all other runways. The precision <br />instrument approach to Runway 13 utilizes an Instrument Landing System (ILS) and <br />the runway is equipped with a Medium Intensity Approach Lighting System with <br />Sequenced Flashers (MALSR) to enable visibility minimums of ½ mile. RNAV/GPS <br />Facility Requirements Chapter Page 11 of 70 <br />October 2020 <br /> <br />