Small Airport Regulation Relief Act of 2014 - Prescribes a special rule to require the Secretary of Transportation (DOT) for FY2015 and FY2016 to apportion amounts for airport planning and development and noise compatibility planning and programs to sponsors of primary airports based on the number of passenger boardings at the airport during calendar year 2012 if it had: (1) fewer than 10,000 passenger boardings during the calendar year used to calculate the apportionment for FY2015 or FY2016, and (2) 10,000 or more passenger boardings during calendar year 2012.