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)
Visual Approach Slope Indicator (Vasi) System for Long-Bodied Aircraft
1970
37 pages
Report
Keine Angabe
Englisch
Visual Approach Slope Indicator (VASI) Improvements
NTIS | 1973
|Visual Approach Slope Indicator
Emerald Group Publishing | 1962