Accession Number:

AD0726435

Title:

Simulation Study of Chevron Markings for Areas Adjacent to Runway Thresholds.

Descriptive Note:

Interim rept. Dec 70-Mar 71,

Corporate Author:

NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER ATLANTIC CITY N J

Personal Author(s):

Report Date:

1971-07-01

Pagination or Media Count:

20.0

Abstract:

To determine the minimum system of chevron markings that would give warning of potentially deceptive, nonload-bearing paved areas before a runway threshold, 20 pilots were given systematic exposure in a flight simulator to narrowed and more widely spaced chevron patterns, and also to the present U.S. Standard. The judgments made by these pilots were that both the conventional pattern of full-width chevrons spaced 100 feet apart and a pattern of standard-width chevrons spaced 200 feet apart provided distinct and unambiguous warning of the nonload-bearing surface. Further, they reported that these two patterns were not confusable with other markings such as the runway threshold stripes. Pilot judgments of the two patterns with narrowed chevrons were mixed. While a majority reported the narrowed chevrons not confusable, there was a marked increase in the number reporting absence of distinct and unambiguous guidance, particularly when the markings were viewed from a position low on glide slope and offset from the centerline. Author

Subject Categories:

  • Terminal Flight Facilities

Distribution Statement:

APPROVED FOR PUBLIC RELEASE