Rev. 9/97

City of San José

Under general supervision, performs work of moderate difficulty, recording and evaluating environmental sound data obtained from airport sound monitoring equipment. Performs related work as required.

TYPICAL DUTIES AND RESULTS (The position may not include all the duties listed, nor do the examples cover all the duties which may be performed.)

• Operates the airport sound monitoring system to measure and record the sound energy produced by all aircraft during a 24-hour period, and computes the Community Noise Equivalent Level (CNEL) for that period; compares data with noise requirements and prepares relevant reports for appropriate County and State authorities.
• Operates computer terminals as they relate to the Airport Sound Monitoring Systems which involves program inputs to accomplish selective noise measurement data.
• Operates airport sound monitoring system to measure and record Community Noise Exposure Level (CNEL); records the air traffic control and ground control instructions of that aircraft along with altitude and flight path information for comparison with the noise level produced by the aircraft at each given point in time.
• Evaluates and compares the recordings of noise impact, tower instructions by air controllers, and flight path altitude data and determines the reasons for a single flight's noise levels.
• Computes, interprets, and charts the noise energy impacted by each type of aircraft as it varies with atmospheric conditions, weather conditions, actual flight weight of the aircraft for each particular flight, flight path and altitude, and engine operating efficiency among other variables.
• Assists in predicting noise impact that would be produced by proposed additional flights or operations; makes recommendations for substitutions of aircraft types, flights, or operations that will allow maximum utilization of the facility while remaining within the confines of the noise requirements.
• Prepares written and graphic reports; makes presentations relative to the airport's impact on the sound environment of San Jose and surrounding communities, and displays the data on a noise contour map.
• Assists in testing airport sound monitoring and recording systems for operability or malfunctions; schedules preventive maintenance; may order emergency repairs; performs light maintenance on the system such as replacement of defective circuit cards; and accoustically calibrates the system through use of a noise calibration instrument.

An employee in this class receives direction from the Senior Airport Noise Specialist in operating sound monitoring equipment to obtain and analyze data, and makes recommendations for maximum flexibility between efficiency in air facility operations and environmental compliance requirements.

• Knowledge of terminology used in piloting and navigating aircraft in air terminal areas to include gaining clearances of all types in operation of aircraft, and in understanding and responding to air controller's instructions.
• Knowledge of the technical aspects of air transportation equipment and modifications thereto, especially as it relates to the production of sound, and the noise and air quality characteristics of various standard and jet engines.
• Ability to prepare detailed, clear graphic charts and noise contour maps.
• Ability to express oneself clearly and concisely, both orally and in writing.
• Ability to establish and maintain effective working relations with others.

• Knowledge of Federal, State, and local noise environmental standards, rules, regulations, terms, and agency structure.
• Knowledge of noise control procedures, including computer application to such procedures.
• Knowledge of the physics of sound and mathematics through logarithmic functions.
• Ability to analyze the interrelationships of a variety of recorded data.

• Ability to analyze the interrelationships of flight patterns and sound contours.

This airport-specific classification requires each candidate to satisfactorily complete a Federal Aviation Administration (FAA) 10-year employment history verification which may include a criminal history records check prior to being considered for a position in this class.

Successful completion of a Baccalaureate Degree from an accredited college or university with a major in air transportation, airport management, or a related field and successful completion of FAA-approved ground school.

None required.

Years of experience in air transportation or air management may be substituted for education on a year-for-year basis. There is no substitution for completion of the FAA-approved ground school.

(7/80), (Rev. 4/82), (Rev. 4/86), (Rev. 2/96), (Rev. 9/97)

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