AIM ¶ 4-1-23 — Weather Systems Processor
AIM 4-1-23 explains the Weather Systems Processor (WSP): wind shear, microburst alerts, and 6-level terminal weather for ASR-9 sites. Study with GroundScholar.
The Weather Systems Processor (WSP) is an enhancement added to selected ASR-9 (Airport Surveillance Radar) facilities to give controllers and pilots better terminal-area weather awareness. Per AIM 4-1-23, the WSP performs several key functions:
- Alerts Air Traffic Control to hazardous wind shear and microbursts so controllers can warn arriving and departing aircraft.
- Displays 6-level terminal area weather (precipitation intensity).
- Shows storm cell locations and movement.
- Identifies the location, predicted future position, and intensity of wind shifts that could affect airport operations.
Why it matters: as a student pilot, you'll often hear ATC issue wind shear alerts, microburst advisories, or precipitation intensity calls in the terminal environment. Knowing they may originate from WSP-equipped ASR-9 radar helps you understand how timely those advisories are and why a go-around or delayed departure may be the safest response. The WSP supplements — but does not replace — onboard weather radar and pilot judgment.
Five FAA-written-style questions. Instant explanations, every answer cites its source — no account needed.
You are flying VFR in Class E airspace at 8,500 feet MSL during the day. What are your minimum visibility and cloud clearance requirements?