Guidance · AIMAIM effective July 9, 2026
AIM 4-1-23 Weather Systems Processor
Chapter 4. Air Traffic Control · Section 1. Services Available to Pilots
A reference copy of the official AIM text for study. It is not legal advice or an FAA interpretation; always confirm against the current official source.
The Weather Systems Processor (WSP) was developed for use in the National Airspace System to provide weather processor enhancements to selected Airport Surveillance Radar (ASR)-9 facilities. The WSP provides Air Traffic with warnings of hazardous wind shear and microbursts. The WSP also provides users with terminal area 6-level weather, storm cell locations and movement, as well as the location and predicted future position and intensity of wind shifts that may affect airport operations.
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