System Availability

The Oceanic SPR standard requires an availability of 99.9% for safety however ANSP operating reduced separations in areas of high traffic density require an availability of 99.99% for traffic efficiency.

Individual ANSP should determine whether their traffic patterns require the higher availability figure to be met for traffic efficiency.

The following availability information is as observed in the NZZO Oceanic FIR.

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System Availability since 2008

Network Outages since 2008

System Availability by Year

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