Visual Approach Slope Indicator (VASI) System for Long-Bodied Aircraft.

Abstract

A comparative evaluation was conducted on two methods of modifying the standard VASIS for use for long-bodied aircraft operations. Modification was required due to the greater pilot eye-to-wheel height of the larger aircraft which placed these aircraft in a potential undershoot situation when the on-course signals of standard VASIS were flown. Thirty-four subject pilots flying a variety of aircraft, including the B-747 and C-5A aircraft, participated in the program. The aircraft were tracked with phototheodolite equipment, and the pilots completed questionnaires at the conclusion of each flight. The Three-Bar System, a modification consisting of an additional component of the standard VASIS, was a significantly better aid than the White-Wing System, a modification incorporating the use of white lights only (pilots flew combinations of bright-dim lights) adjacent to the upwind bar of the standard VASIS. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1970
Accession Number
AD0715453

Entities

People

  • Robert F. Gates

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Communication Equipment
  • Indicators
  • Instrumentation
  • Measuring Instruments
  • Navigational Equipment
  • Phototheodolites
  • Questionnaires
  • Standards
  • Test And Evaluation
  • Vehicle Equipment
  • Vehicles
  • Visual Approach Slope Indicators
  • White Light

Readers

  • Aquatic Ecology
  • Aviation Safety and Air Traffic Management