FAQ, Links, and Resources
Noise abatement procedures are voluntary and designed to minimize exposure of residential areas to aircraft noise, while ensuring safety of flight operations. There are communities surrounding the airport which are noise sensitive. We want to minimize the noise impacts on these communities. Learn more about our procedures and how to reach out on our noise abatement page. Below you will find additional resources, suchs as an FAQ, glossary, and helpful links.
Noise Abatement FAQs
Here are answers to frequently asked questions regarding noise abatement at Tampa International Airport.
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A Part 150 Study is a voluntary study that is initiated by an airport sponsor to determine ways to reduce noise over residential and other noise-sensitive areas. It also aids in the determination and planning of compatible and non-compatible land areas surrounding an airport. The purpose of the recently approved Part 150 Study is to evaluate existing conditions and recommend proposed noise abatement and land use management measures intended to reduce the impact of aircraft noise on residents and land areas surrounding the Airport.
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Federal legislation from 1990 (the Airport Noise and Capacity Act) removed the ability for airports to implement a formal noise program or curfew. Though there is a mechanism to explore these options, the FAA has never granted such approval to any commercial airport in the United States since this legislation was passed. We discuss this topic at length during our Noise Abatement 101 offerings, held at least twice per year. Please visit our previous meeting presentations to learn more.
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The Aviation Authority can help you learn about the varying flight patterns, peak travel month, and potential noise impact areas from aircraft operations. The Airport's online flight tracking tool found here can provide helpful insights on flight patterns. We encourage home buyers to visit properties at several different times of the day and during various seasons. For additional information, call the Noise Monitoring Office at (813) 870-7843.
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Airlines design their schedules for the convenience of their customers. The Airport cannot control or restrict operations. As a public use airport, TPA is open 24/7. The heaviest travel periods are generally early to mid-morning and mid-afternoon to early evening. Cargo aircraft operate late-night and early-morning flights and more commercial air carriers are scheduling flights later in to the evening than in years past. Aircraft can access TPA at anytime of day or night.
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Planes must takeoff and land into the direction of the prevailing wind, therefore, the direction of arrivals and departures is determined almost exclusively by wind direction. The Federal Aviation Administration (FAA) is in charge of air traffic control at TPA.
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Residents living within 35 miles of any major metropolitan airport can expect to see aircraft at some point during the day. Aircraft can deviate from one of the predominant flight patterns due to wind direction and/or speed, thunderstorms, instructions from air traffic control, emergency, operational constraint, and safety, etc.
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- Airport management maintains a sense of the public sentiment through the administration of a program to address community noise concerns. Furthermore, airport management utilizes this point of contact for public education purposes and attempts to discern between the realities and the subjective nature of complaints. Centralized communications with the public about aircraft noise complaints also allow the opportunity to identify problem areas and, sometimes, an opportunity to correct something before it becomes a greater issue.
- The public wants to have complaints documented and sometimes seeks information. Most of all, the public seeks change in the condition as they want the noise to go away. People are concerned about aircraft noise and complain because they would like to see changes occur. At times a call may alert the Airport of an unusual noise event(s) and/or a recurring problem that can be investigated and resolved. However, a noise complaint may not bring about an individual's desired change. The noise complaint line provides individuals the ability to express their concerns about aviation noise at TPA.
- People file complaints for different reasons and have different expectations. The Aviation Authority tries to be responsive to the public and can take action when appropriate and when able to, but some callers will be frustrated when they learn that changes cannot be made. Other callers are satisfied that they have "gone on record" and have voiced their concerns.
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In 1990 Congress passed legislation that made it extremely difficult for airports to initiate curfews or other noise and access restrictions. This Federal legislation "grandfathered" all existing noise/access restrictions at other airports that had such restrictions, which is less than 12 commercial airports in the whole country. These airports already had noise restrictions that were allowed to remain in place. TPA had a voluntary Informal Runway Use Program which emphasizes preferential priority runways for turbojets and where noted, turboprop operations and pilot education.
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TPA's informal runway use program is often used by pilots under ideal conditions. Factors such as weather, FAA ATCT instructions, operational necessity, safety, and the presence of other aircraft will often dictate a flight path that is different from the informal runway use program.
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Pilot education is a major part of our noise abatement program and the noise complaints assist the Airport in this effort. Since 2016, the Airport has proactively investigated and posted deviations to the Airport's Preferential Runway Use Program to our website, whether a noise complaint is received or not. This page may be accessed by visiting www.tampaairport.com/daily-deviations.
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Aircraft altitude is established by Federal law. Title 14, Code of Federal Regulations Section 91.119 which governs flight states:
- "Except when necessary for takeoff of landing, no person may operate an aircraft below the following altitude:
- Over any congested area of a city, town or settlement, or over any open air assembly of persons, an altitude of 1,000 feet above the highest obstacle within a horizontal radius of 2,000 feet of the aircraft."
It is important to be aware of two aspects of this regulation. First, most aircraft operating in the vicinity of TPA are in the process of landing or taking off, thus this regulation does not apply. Second, helicopters are specifically exempted from this Federal regulation.
- "Except when necessary for takeoff of landing, no person may operate an aircraft below the following altitude:
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TPA preferred departure and arrival procedures for turbojets and turbo props are used frequently during periods of good weather. During periods of reduced visibility (rain, fog, etc) aircraft must use an Instrument Landing System (ILS). During these periods, aircraft will be vectored around the weather cells and thus, areas that are normally not impacted by aircraft over-flights, occasionally, will receive over-flights.
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There are many reasons, sometimes beyond the airline's control, why a jet may fly out of the preferred voluntary flight path. These include traffic conflicts, weather, air traffic control directives, safety considerations, aircraft performance and pilot technique, etc.
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Wind and weather dictate which runway end or flow direction (north or south) the FAA can use. If Tampa Bay is in a persistent weather pattern this may force the FAA to rely on the same runway end for a long period of time.
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Pilots fly prescribed routes to and from TPA as instructed by air traffic controllers. The FAA is responsible for managing TPA’s airspace and for ensuring the safe and expeditious flow of traffic.
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Airplane noise is comprised of both engine noise and airframe noise. Engine noise, which is typically most pronounced during takeoff, has several contributors. The turbulent mixing of flow streams—when the hot core efflux (high-velocity exhaust) and the fan exhaust flow meet free-streaming air—produces noise from the engine’s jets. The fan within the engine makes noise that escapes from both the front and back of the engine. The fan is also responsible for the “buzz saw” noise during takeoff, created when the tips of the fan blades are traveling close to the speed of sound. Airframe noise, unlike engine noise, is most noticeable during landing. The lowering of landing gear creates turbulence that produces noise. Similarly, the interaction of flaps and slats on the wing during descent influences airstream flow and thus creates noise.
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Aircraft operating at TPA have a diverse range of noise levels. These noise levels primarily depend on the type of engine used by the aircraft, the size of the aircraft and whether the aircraft is taxiing on the airfield, landing or taking off. The newest so called "full Stage 3" aircraft tend to be the quietest aircraft in the fleet. Aircraft with Stage 3 "hushkitted" engines tend to be the loudest. See (Noise Glossary for clarification on Stage 3 versus Hushkitts). Departures tend to be louder than arrivals since the pilot is forcing more power to the engine to achieve lift.
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Aircraft associated with TPA tend to fly within broad airspace corridors as the FAA directs aircraft to and from the airfield. If you live within one of these corridors, you will likely experience aircraft over flights, however, other land areas not under the flight tracks can be impacted. How and to what frequency any particular land area is impacted depends on, the weather, the runway end being used, the type of aircraft, aircraft engine characteristics and relative distance from the airport. The Noise Officer can assist you to better understand this relationship between where you live and aircraft over-flights.
Noise Glossary and Acronyms
dB - The decibel (dB) is the unit used to measure the magnitude or intensity of sound. It uses a mathematical scale to cover the large range of sound pressures that can be heard by the human ear. A 10-dB increase will be perceived by most people to be a doubling of loudness. For example, 80 dB typically seems twice as loud as 70 dB.
dBA – The A-weighted Decibel (dBA) is the most common unit used for measuring environmental sound levels. It adjusts, or weights, the frequency components of sound to conform with the normal response of the human ear at conversational levels. dBA is an international metric that is used for assessing environmental noise exposure of all noise sources.
DNL - In simple terms, Ldn or Day Night Average Sound Level (DNL) is the average noise level over a 24-hour period except that noise occurring at night (between the hours of 10:00 p.m. and 7:00 a.m.) are artificially increased by 10 dB. This weighting reflects the added intrusiveness of night noise events attributable to the fact that community background noise typically decreases by 10 dB at night. Under Federal Aviation Regulation (FAR) Part 150, the FAA has established Ldn/DNL as the cumulative noise exposure metric for use in airport noise analyses.
FAR Part 150 Study - A program funded by the FAA under Federal Aviation Regulation Part 150; Airport Noise Compatibility Planning and by Local Government entities allowing airport operators to voluntarily develop and submit noise exposure maps and noise compatibility programs to the FAA.
IFR – Instrument Flight Rules (IFR) govern flight procedures during limited visibility or other operational constraints. Under IFR, pilots fly under the guidance of radar.
ILS – An Instrument Landing System (ILS) is a precise landing aid consisting of several components giving pilot vertical and horizontal electronic guidance. Elements usually include:
- An outer marker, a radio beam 4 to 6 miles from the touchdown point where the electronic signal begins;
- An approach lighting system at the runway end;
- A localizer radio beam which provides the horizontal guide; and
- A glide slope which provides vertical guidance on the angle of descent for landing.
Land Use Compatibility - Land uses identified in FAR Part 150 as normally compatible with the outdoor noise environment adjacent to an airport within a specific noise contour level (or an adequately attenuated noise level reduction for any indoor activities involved).
Noise Abatement – A procedure or technique used by aircraft at an airport to minimize the impact of noise on the communities surrounding an airport.
Noise Contour - A continuous line on a map that represents equal levels of noise exposure. Noise lessens from the innermost area within a contour line outward. Noise exposure is regarded as significant above the 65 DNL noise contour line, and the Federal Aviation Administration recommends that land-use controls be implemented.
Noise Event – A Noise Event is the measured sound produced by a single source of noise over a particular period of time. An aircraft noise event begins when the sound level of an over-flight exceeds a noise threshold and ends when the level drops down below that threshold.
Noise Level – For airborne sound, unless specified to the contrary, it is the A-weighted sound level.
Noise Study – Investigation of existing noise conditions, flight patterns and land use surrounding an airport.
Preferential Runway Use – Taking off or landing on specified runways during certain hours to avoid residential and other noise-sensitive areas, to the greatest extent possible.
Stage 2 and Stage 3 Aircraft - As of January 1, 2016, all commercial jet engines currently meet Stage 3 noise standards. Stage 3 aircraft incorporate the latest technology for suppressing jet-engine noise and, in general, are 10 dB quieter than Stage 2 aircraft. This represents a halving of perceived noise; however, actual noise reduction varies by aircraft.
VFR – Visual Flight Rules (VFR) are air traffic rules allowing pilots to land by sight without relying solely on instruments. VFR conditions require good weather and visibility.
Additional Resources
- Federal Aviation Administration – Southern Region (ASO)
- Federal Aviation Administration (FAA) - The FAA has a searchable database and links to Federal Aviation Regulations and Advisory Circulars.
- Federal Interagency Committee on Aviation Noise (FICAN) - Serves as a clearing house for Federal aircraft noise research and development (R&D) efforts and as a focal point for questions and recommendations on aviation noise R&D.
- Florida Airports Council (FAC) - An association of publicly-owned and operated airports, airport professionals, and experts in the fields of airport design, development, and improvement, as well as aviation trades that support the airport industry in Florida.
- Florida Aviation Laws and Rules
- Florida Department of Transportation (FDOT) - Information about transportation in Florida
- Florida Statutes and Regulations