Establishment Criteria for Visual Approach Slope Indicator (VASI).

Abstract

This report develops revised establishment and discontinuance criteria for Visual Approach Slope Indicator (VASI) which provide Visual Flight Rules (VFR) guidance only. Criteria are based upon detailed benefit/cost methodology. This approach takes into account the number of aircraft landings by user class with variations depending upon whether or not the runway is equipped with an Instrument Landing System. Benefits derived from a VASI were principally in the area of safety which are obtained by improved guidance during final VFR approaches. Revised criteria require that a ratio value be computed for each of the three types of operations (air carrier, air taxi, and general aviation including military). The three ratios are then added to obtain a total ratio value, and this is multiplied by the runway utilization to obtain a net ratio value. If this net ratio value is equal to 1 or greater, then the runway is a candidate for a VASI. In the short term, it is estimated that 590 runways now without a VASI will qualify. Over the next ten years, an additional 388 runways are expected to qualify for a VASI. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1977
Accession Number
ADA043785

Entities

People

  • Jose Roman Jr

Organizations

  • Federal Aviation Administration

Tags

Communities of Interest

  • Air Platforms
  • Biomedical

DTIC Thesaurus Topics

  • Accidents
  • Air Traffic
  • Aircraft Landings
  • Aircrafts
  • Aviation Accidents
  • Cost Analysis
  • Databases
  • Glide Slope
  • Ground Proximity Warning Systems
  • Jet Aircraft
  • Life Cycle Costs
  • Life Cycles
  • Rods
  • Safety
  • Transportation
  • Visual Approach Slope Indicators
  • Warning Systems

Readers

  • Aviation Safety and Air Traffic Management
  • Regression Analysis.