Inop instrument approach component

[barrichello72]

Hi folks i have a question about the inop component and how they affect the minima.
It is my understanding that the minima rvr required to shoot an approach is affected by a number of factors amongst which the als is included. According to the table listed in the EASA specs when the approach lights stretch for 720m or more the FULL ALS minima apply. When only from 420 to 719m the INTERMEDIATE minima apply. When only from 210 to 419m the BASIC minima apply while when less than 210m the NO ALS minima apply. However the Jeppesen charts normally report only the FULL and the NO ALS minima, so if the ATIS and or the NOTAMS report that less than 720m of the ALS is available do u have to apply the NO ALS minima, even though for instance the last 500m are available, putting you in the INTERMEDIATE category that for a precision approach with a DH of 200ft would require a minimum rvr of 700m?
I do understand that the published minima must be referenced to in order to ensure that no safety net is breached, i was just wondering what is the reason, if any, other than sheer burocracy behind the publication of such a table if whenever the als are less than standard - 720m - the ALS OUT minima apply.

Many thanks

Baobab

[lasseb]

I would assume that Jeppesen reports the NO ALS and the XXX ALS figures. Where XXX is related to the actual length of the ALS for that particular airport.
And still, Jeppesen is a private company that relays information from the national AIP's. If a figure is not on a Jeppesen card is does not mean that it is invalid or illegal. It just means that Jeppesen didn't bother writing it down.

As an example, when flying private IR in DK, a whole different set of minimas exists for NP and circling approaches, and basically all the stuff regarding that on the Jeppesen plate is not really usable. That just mean that you have to figure the values out yourself regardless of what is written in Jeppesen

I have never seen a notam saying "halv ALS U/S" and would assume that they would just switch off all lights if that would ever happen. If only half of the ALS is put on nothing will match the ALS drawing on you chart, so I don't think thats actually legal. Maybe someone knows more here???