https://www.angleofattack.com/far/glossary/precision-runway-monitor-prm-system/
Precision Runway Monitor (PRM) System | Angle of Attack — Glossary
PRECISION RUNWAY MONITOR (PRM) SYSTEM — Provides air traffic controllers monitoring the NTZ during simultaneous close parallel PRM approaches with pre. Defi...
precision runway monitorangle of attackprmsystemglossary