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Ontario Noise Management 
To register a comment regarding airport noise, you may call (909) 937-2719, 24 hours a day. Please provide the time the aircraft flew over, the direction the aircraft was headed, and if possible, the type of aircraft and airline (or color scheme).


LA/Ontario International Airport's (ONT) noise management office - established in 1979 - addresses the noise concerns of communities surrounding the airport. Originally, noise issues were handled by ONT's Public Affairs section. When it became necessary to devote more time to noise concerns, ONT created a noise coordinator position in March 1984 to handle noise management. Airport noise management responsibilities currently reside in ONT's Airfield Operations section.

The noise coordinator works with the Ontario Airport Noise Advisory Committee, City of Ontario Part 150 Study committees, individual citizens, elected officials and appointed officials representing municipal, county, regional, state, and national agencies that have responsibility for control of airport noise.

ONT's Airfield Operations staff monitor and record deviations from noise management procedures. In addition, the noise coordinator contacts the Federal Aviation Administration (FAA), aircraft owners, pilots, airline officials, community complainants, or others concerning such deviations.

Lastly, a noise comment system is in place to provide a venue for citizens to call the airport 24 hours a day to register comments, ask questions, and make suggestions about noise management. Comments are recorded in a computer file and condensed into reports. The noise comment telephone number is (909) 937-2719.


Los Angeles World Airports (LAWA) and the City of Ontario conducted a joint noise study over a four-year period. After finalization in April 1990, FAA reviewed the noise control program developed through this study. In September 1991, the FAA approved twelve of the proposed noise management measures.

The FAA and LAWA jointly funded the study on a 75% to 25% cost share basis. The City of Ontario and LAWA were co-managers. Individual citizens, neighboring city agencies, and other agencies participated in the study. Other participants were: FAA, Airline Pilots Association, SANBAG, Air Transport Association, Ontario/Montclair School District, and the West Valley Airport Land Use Commission's chairperson.


LAWA installed a state of the art Aircraft and Noise Monitoring and Management System (ANMMS) in 1990. The system includes 14 noise monitors located within the communities surrounding ONT. The monitors measure noise 24 hours a day, 365 days a year. ANMMS measures airport generated noise in the community, tracks and identifies aircraft within a 10-nautical mile (~11.5 statute mile) radius of the airport, and is used to help LAWA produce maps showing the noise impact area, as required by the State of California. LAWA continually monitors its ANMMS to ensure the accuracy of noise data and related operations information, and to improve the access to and utilization of the various types of available data.


All ONT aircraft operators must comply with FAA regulations and procedures for noise management and noise emission standards, and with all rules, policies, procedures, resolutions, and ordinances established by the City of Los Angeles Board of Airport Commissioners (BOAC) and LAWA, relative to noise management.

Air Traffic Control personnel must employ the noise management preferential runway and taxiway use procedures, recognizing that under certain conditions it may be necessary to deviate due to aircraft emergencies, adverse weather, or field or equipment maintenance. The noise management policy does not limit the discretion of either Air Traffic Control or the pilot with respect to full utilization of the airport's facilities in an unusual situation.

Some of the specific operating policies are:

ONT's standard traffic pattern is to land from the east and take off toward the west. Between the noise sensitive hours of 10 p.m. to 7 a.m. contra traffic flow (land from the east and takeoff to the east) will be in use.

Current policy prohibits air carrier "touch-and-go" training operations without special permission from airport management. Records show that such permission is rare.

Current policy prohibits nighttime engine run-ups between 10 p.m. and 7 a.m. for maintenance unless the engine is in a noise nacelle. Policy only permits daytime run-ups in specified locations at the airport. Idle engine checks will occur for the minimum time required to accomplish the necessary maintenance or preflight check.

Current policy prohibits power-backs (the reverse thrusts by the main engines) at ONT gates due to safety and noise considerations.

Current policy prohibits "intersection departures" (departures not from the end of the runway) for jet aircraft at ONT during normal or contra-flow operations. Aircraft must go to the end of the runway to depart, which allows the aircraft to pass higher over the community.


LAWA encourages airlines to operate Stage 3 aircraft or to re-engine older aircraft to meet Stage 3 noise standards. In 1990, the BOAC implemented a noise regulation that prohibits adding the louder Stage 2 aircraft and phasing out Stage 2 aircraft operations. As of January 1, 2000, all commercial jet aircraft operations were conducted with the quieter Stage 3 engines.


In 1981, ONT built a new runway with the takeoff start-point (threshold) 2200 feet east of the old runway's threshold. This allows planes to be higher when passing over the community. On April 30, 1987, ONT overlaid, reinforced, and extended the north runway eastward so its threshold was parallel to the threshold of the newer southerly runway. The older runway then became the primary departure runway. The newer runway became the primary arrival runway. That project allows departing planes to be higher when passing above the neighboring community.


LAWA is concerned about the impact ONT operations has on its neighbors. Although some aircraft noise is inevitable, airport management has put certain measures in place to monitor, address and reduce noise effects on the citizens in the area. Some of these measures exist because of government mandates, while others exist as a result of a conscientious effort to support the community. ONT will continually strive toward a successful working relationship with parties affected by or concerned with airport issues.