You dig to remember that VGSI
is Visual Glideslope Indicator; among the several varieties found, the PAPI (Precision Approach Path Indicator) is the most common, followed by VASIs (Visual Approach Slope Indicators).
We were told the 3.41-degree glidepath angle generated--and, again, the VGSI
and descent angles are not coincident.
can only be received out to 4 miles, whereas the ILS glideslope intercept altitude is 4.8 miles from the runway.
Those notes on the AeroNav chart about the VGSI
requirement sure seem unnecessary and redundant.
Waivers for 20:1 visual area penetrations existing below the VGSI
obstacle clearance surface have been authorized for a long time.
This restriction can usually be waived if the runway has a VGSI
, as Runway 5 does here, but in this case, no waiver has been granted.
There is no penalty if the surface is penetrated by a lit obstacle, but if it is penetrated by an unlit obstacle, as in this case, it is not authorized for circling at night, unless the runway has a VGSI
Are there any visual aids such as VASI, PAPI (VGSI
) or approach lights?
There's a note that the descent angle (3.21 degrees) and VGSI
(3.5 degrees) are not coincident.
CDFAs can also be considered at Part 139 air-carrier airport runways with visual glideslope indicators (VGSI
) where the VDA is no lower than the VGSI
angle and is aligned within 10 degrees of the runway centerline.
Visual glideslope indicators (VGSI
) and visual descent points (VDP) are two elements that can help with this.
There's a note pointing out that the GPS glidepath and the Visual Glide Slope Indicator (VGSI
) are not coincident.