protected instrument landing system (P-ILS)

[rsaf1]

HEY THERE .. THAT`S ME AGAIN ..
i would like to know what is the (P-ILS) exactly ? and if it`s equipment .. so what`s the difference between it and fm immunity ?
thx in advance and i appricate if any one gives me any link for P-ILS explanation.

[Spitoon]

From my experience 'protected' when describing an ILS means that the restrictions on and close to the ground needed to permit Cat II/III operations are in place.

[rsaf1]

Thx Alot For Ur Answer ,, The Problem Actually That This Is One Of Many Things We Put In Considration To Upgrade Our Airplanes To Meet Cns/atm .. So We Have To Get It .. Any How Thx Alot

[Spitoon]

OK, sounds like it's equipment then - and I guess relates to FM immunity - but it's not something I know much about. Sorry I can't help any further.