Originally Posted by
Stanley Eevil
A `Precision Approach Lighting System`, which I believe can be to CAT 1,2 or 3 standards, is something completely different to the PAPIs (Precision Approach Path Indicator) as far as I am aware.
Having done a bit more digging, ICAO Annex 14 does indeed class both PAPI and VASI as "Visual Approach Slope Indicator Systems", but if my interpretation of the relevant chapter is correct, they are not formally part of Approach Lighting.
I therefore tend to agree with those who suggest that PAPI is not part of an `ALS`. Is it, in fact, solely intended as a visual approach aid and therefore would not affect instrument approach RVR minima if it were to be inoperative?
Further opinions on this would be gratefully received!!
Agree, furthermore from the same page the following is outlined.
PAPI inop does not affect precision approach minima, unless specifically stated on the IAP itself on a casa by case basis.
