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Abbreviated Aviation Terms and Names: - page 20 / 22

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NEW SMYRNA BEACH MUNICIPAL AIRPORT AIRPORT MASTER PLAN UPDATE

APPENDIX A

PROPRIETARY USE RESTRICTIONS - Restrictions by an airport sponsor on the number, type, class, manner, or time of aircraft operations at the airport.

RAMP - See APRON.

RETROFIT - The retroactive modification of existing jet aircraft engines for noise abatement purposes.

RUNWAY OBJECT FREE AREA - The runway object free area (OFA) is a two-dimensional ground area surrounding the runway. The runway OFA clearing standard precludes parked airplanes and objects, except objects whose location is fixed by function.

RUNWAY PROTECTION ZONE (RPZ) - The RPZ (formerly the runway clear zone) is trapezoidal in shape and centered about the extended runway centerline. It begins 200 feet beyond the end of the area usable for takeoff or landing. Displacing the threshold does not change the beginning point of the RPZ. The RPZ dimensions are functions of the design aircraft, type of operation, and visibility minimums.

RUNWAY THRESHOLD - The beginning of that portion of a runway usable for landing.

RUNWAY USE PROGRAM - See PREFERENTIAL RUNWAY USE PROGRAM.

SEVERE NOISE EXPOSURE - Exposure to aircraft noise that is likely to interfere with human activity in noise-sensitive areas; repeated vigorous complaints can be expected and group action is probable. This exposure may be specified by a cumulative noise descriptor as a level of noise exposure, such as DNL 75. (See SIGNIFICANT NOISE EXPOSURE)

SIGNIFICANT EFFECT ON THE ENVIRONMENT - A substantial, or potentially substantial, adverse change in any of the physical conditions within the area affected by the project, including land, air, water, minerals, flora, fauna, ambient noise, and objects of historic or aesthetic significance. An economic or social change by itself is not considered a significant effect on the environment. A social or economic change related to a physical change may be considered in determining whether the physical change is significant.

SIGNIFICANT NOISE EXPOSURE - Exposure to aircraft noise that is likely to interfere with human activity in noise-sensitive areas; individual complaints may be expected and group action is possible. This exposure may be specified by a cumulative noise description as a level of noise exposure, such as DNL 65. (See SEVERE NOISE EXPOSURE)

SOUND INSULATION - (1) The use of structures and materials designed to reduce the transmission of sound from one room or area to another or from the exterior to the interior of a building. (2) The degree of reduction in sound transmission by means of sound insulating structures and materials.

SOUND LEVEL (NOISE LEVEL) - The weighted sound pressure level obtained by the use of a sound level meter having a standard frequency filter for attenuating part of the sound spectrum.

HOYLE, TANNER & ASSOCIATES, INC.

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