Laserfiche WebLink
AIRPORT MASTER PLAN <br />should be a key development focus for the airport moving forward and should be <br />. <br />Additionally, it should be noted that the additional wind coverage gained by <br />combining Runway 13/31 or Runway 8/26 with the wind coverage provided by <br />Runway 17/35 is incremental and no substantial difference in wind coverage exists <br />between the wind coverage provided by all three runways as opposed to only two <br />of the runways (e.g. Runway 17/35 and either Runway 8/26 or Runway 13/31). As a <br />result, a third runway is not necessary for wind coverage purposes. <br />Runway length requirements for an airport can be evaluated utilizing a number of <br />methodologies. To ensure a thorough and complete analysis regarding the <br />sufficiency of the current runway length, two <br />evaluation methodologies were used for this analysis: <br />1.Runway Length Evaluation based on AC 150/5325-4B <br />2.Runway Length Evaluation Utilizing Forecasted Fleet Mix and Airport Planning <br />Manuals (AMP) or Manufacturer Data for Aircraft Expected to Frequently Use <br />San Marcos Regional Airport <br />Runway Length Evaluation Based on AC 150/5325-4B <br />FAA AC 150/5325-4B, Runway Length Requirements for Airport Design, provides <br />guidance to help determine the most appropriate recommended runway lengths <br />for an airport. Runway length is typicallypredicated upon the category of aircraft <br />using or forecasted to use the airport. By design, the primary runway at an airport <br />is typically the longest runway, with the most favorable wind conditions, the highest <br />pavement strength, and the lowest straight-in instrument approach minimums. <br />A significant factor to consider when analyzing the generalized runway length <br />requirements for an airport is that aircraft takeoff performance is a function of an <br />elevation, temperature, and <br />payload vs. fuel load, stage length, and general performance characteristics. As <br />these factors change, the runway length requirements for an aircraft change <br />accordingly. Consequently, if a runway is designed to accommodate 75% of the <br />fleet at 60% useful load, this does not prevent larger aircraft at certain times and <br />Facility Requirements Chapter Page 3of 70 <br />October 2020 <br /> <br />