Clear Zones ( CZs ) and Accident Potential Zones ( APZs ) I and II . The Air Force has identified APZs and CZs at each end of the runways based on historical data for aircraft mishaps .
The purpose of safety zones is to provide for the general safety of the public as it relates to the land uses under these zones . The DOD uses one class of runways ( Class B ) for the purpose of defining CZs and APZs . A Class A runway is intended primarily for small light aircraft whereas a Class B runway can accommodate heavy aircraft and / or have the potential for development to heavy aircraft use . The following is a description of the Seymour Johnson AFB aircraft safety zones .
The 2011 Seymour Johnson AFB AICUZ Study establishes aircraft safety zones for Seymour Johnson AFB runways ( Class B ) based on historical data of aircraft collisions , geography , and runway information . The following is a brief description of these safety zones . The safety zones are illustrated on Figure 3‐13 .
The CZ begins at the end of each runway measuring 3,000 feet wide extending outward in a fan‐shape to a length of 3,000 feet from the end of each runway . The CZ is the area where an accident involving an aircraft operation is most likely to occur ; therefore , development is completely restricted in this area .
The Accident Potential Zone I ( APZ I ) is a rectangular area begins at the end of each CZ and extends to a length of 5,000 feet by 3,000 feet wide . This area typically experiences fewer accidents than the CZ but still has a measurable potential for aircraft accidents relate to the CZ . An APZ I is established under flight tracks that experience 5,000 or more annual operations ( departures or approaches ).
The Accident Potential Zone II ( APZ II ) is a rectangle that begins at the end of each APZ I at both ends of the runway extending to a length of 7,000 feet by 3,000 feet wide . Accident Potential Zone II is where development is the least restricted due to the reduced risk of accidents si runway .
The APZ ’ s extend from the end of the runway bu arrival and departure flight tracks used by the ai than one predominant flight track to or from the the direction of each flight track . Outside the CZ aircraft accidents is not significant enough to wa land‐use planning . In addition to the CZ , there is the primary surface ) that extends outward for 50 the length of , the runway .
Statistically , approximately 23 percent of acciden CZ area , 10 percent within APZ I , and only 5 perc
The 2011 AICUZ update identified approximately installation within the CZ , 689 acres outside the 964 acres outside the installation within APZ II . extends to the southeast and encompasses part Goldsboro Waste Water Treatment Plant and su City of Goldsboro . Both APZ I and II extend off‐in located to the northeast and southwest in the C County .
Aircraft Noise Contours The AICUZ study provides recommendations for associated with noise generated by aircraft that baseline is based on noise modeling conducted b year and then averaged for day and night noise l noise levels for decibels ( dB ) of 60 and higher be uses aircraft information such as approach and d pre‐flight and maintenance operations ( run ups ) associated with each aircraft .
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