APPROACH VISIBILITY STUDIES AT NEWARD
Abstract
The development of equipment and techniques for determining a pilot's slant visual range in the approach zone under instrument landing conditions was investigated. Resulting from these studies is a method of determining and expressing in the form of probabilities slant visibility in terms of height on the glide slope at which a pilot on an instrument approach would first establish visual contact with the approach light system, the Approach Light Contact Height (ALCH). This report presents a detailed analysis of 2375 instrument approaches. Conventional type aircraft were used to participate during the project. Data from pilot reports of establishing contact during an instrument approach was based upon his sighting of centerline Configuration A high intensity approach lights in contrast to earlier studies in which sighting of runway threshold lights of lower effective intensities were used. Based upon this later data, earlier empirical relationships between the measured meteorological quantities and the approach light contact height have been redefined and simplified. New constants have been derived. A complete description of the basis of the method is presented together with an evaluation of the operational applications of the information as pilot advisory data, as a basis for legal landing minimums, and as a missed approach probability indicator. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1960
- Accession Number
- AD0262769
Entities
People
- William E. Eggert