TABLE OF CONTENTS

CHAPTER 1 - INTRODUCTION

1.1   PURPOSE  
1.2   SCOPE 

CHAPTER 2 - SENSOR EXPOSURE

2.1   GENERAL  
2.2   PRESSURE SENSOR  
2.3   CLOUD HEIGHT SENSOR  
2.4   VISIBILITY SENSOR  
2.5   WIND SENSOR  
2.6   TEMPERATURE AND DEW POINT SENSORS  
2.7   LIGHTNING DETECTION (THUNDERSTORM) SENSOR.  
2.8   PRECIPITATION TYPE DISCRIMINATION SENSOR 
2.9   PRECIPITATION OCCURRENCE (YES/NO) SENSOR  
2.10  FREEZING RAIN DETECTION SENSOR  
2.11  PRECIPITATION ACCUMULATION (LIQUID OR LIQUID EQUIVALENT) SENSOR 
2.12  SNOWFALL-SNOW DEPTH SENSOR  
2.13  COMBINATION VISIBILITY, PRECIPITATION OCCURRENCE, AND
      PRECIPITATION ACCUMULATION SENSOR 

CHAPTER 3 - SITING CRITERIA FOR SENSOR PLACEMENT AT AIRPORTS

3.1   GENERAL 3-1 
3.2   CLOUD HEIGHT, VISIBILITY, WIND, TEMPERATURE, DEW POINT, AND
      PRECIPITATION SENSORS 
      3.2.1  General 
      3.2.2  Airports with Only Visual and/or Nonprecision Runways  
      3.2.3  Airports with Precision Instrument Runways and Without RVR
             Instrumentation  
      3.2.4  Airports with Precision Instrument Runways and With RVR    
             Instrumentation 
3.3   PRESSURE, LIGHTNING DETECTION SENSORS 
      3.3.1  Pressure 
      3.3.2  Lightning Detection (Thunderstorm) 

CHAPTER 4 - HELIPORT SITING CRITERIA

4.1   NON-AIRPORT HELIPORT SITING CRITERIA  
4.2   PRESSURE SENSORS 
4.3   SENSORS IN VICINITY OF TAKEOFF AND LANDING AREA 
      4.3.1  Cloud Height Sensor  
      4.3.2  Visibility Sensor  
      4.3.3  Wind Sensor 
      4.3.4  Temperature and Dew Point Sensors
      4.3.5  Precipitation Sensor(s)      
      4.3.6  Lightning Detection (Thunderstorm) Sensor 

4.4   AIRPORT HELIPORT SITING CRITERIA 4-3 

      4.4.1  Option #1  
      4.4.2  Option #2  
      4.4.3  Option #3 

APPENDIX A

Membership of Contributing Groups


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