San Marcos Municipal Code Art. VI Noise Abatement

All persons operating aircraft from City airports shall comply with all noise abatement procedures, traffic patterns and policies as may be established by City and acceptable to FAA.

Only those aircraft that on takeoff or landing cause an effective perceived noise level (EPNL) not greater than 90 decibels (DB) at a sideline location 450 meters (1,500 feet) from the extended centerline of the runway shall be permitted to conduct training flights at the City airports.

(a)

For purposes of this part the sideline effective perceived noise level shall be that measured or estimated as provided in Federal Aviation Administration Advisory Circulars 36-1B, dated December 5, 1977, and 36-2A, dated February 6, 1978, which circulars, including all subsequent revisions, amendments and reissues thereof, are incorporated herein by reference.

(b)

For the purpose of this part "training flight" shall mean any instrument or isual approach to the airport conducted for the purpose of student instruction, pilot proficiency training, or pilot evaluation check rides, whether or not a landing touchdown is accomplished.

Only those aircraft that on takeoff or landing cause an effective perceived noise level (EPNL) not greater than 90 decibels (DB) at a sideline location 450 meters (1,500 feet) from the extended centerline of the runway shall be permitted to establish permanent base of operations at City airports after the effective date of this ordinance.

(a)

For the purpose of this part the sideline effective perceived noise level shall be that measured or estimated as provided in Federal Aviation Administration Advisory Circulars 36-1B, dated December 5, 1977, and 36-2A, dated February 6, 1978, which circulars, including all subsequent revisions, amendments and reissues thereof, are incorporated herein by reference.

(b)

A "permanent base of operations" for an aircraft is established at an airport whenever that airport serves as the base of activities for flight operations, maintenance and/or storage for any period exceeding 21 days in a calendar year.