Accession Number:

AD0684088

Title:

TEST AND EVALUATE RUNWAY ALIGNMENT INDICATOR LIGHT (RAIL) FOR APPROACH GUIDANCE

Descriptive Note:

Final rept.

Corporate Author:

NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER ATLANTIC CITY NJ

Personal Author(s):

Report Date:

1969-03-01

Pagination or Media Count:

32.0

Abstract:

An evaluation was completed comparing the Runway Alignment Indicator Lights RAIL with the Medium Intensity Approach Light System MALS for effectiveness in providing identification and guidance as visual approach aids. The two aids were flown alternately in each available weather condition to permit comparison. The results obtained from pilot questionnaires and radar data during day and night IFRVFR operations with weather minimums down to 34- mile visibility indicated the following While the RAIL provided earlier identification and displacement information than did the MALS the glare from the RAIL was so distracting during VFR night operations that pilots considered the RAIL unacceptable. On the other hand, the MALS was acceptable during day and night IFRVFR operations and was rated the better approach aid during VFR night operations. It was recommended that RAIL not be approved for operational use.

Subject Categories:

  • Terminal Flight Facilities

Distribution Statement:

APPROVED FOR PUBLIC RELEASE