Ils 36 notam

[Vin Rampey]

Does anyone know why the ILS 36 is NOTAM'd out of service this week and next (from July 18-31)? There is nothing in the NOTAM booklet about it being unavailble so I was just curious.

We have been lucky enough in past years to never need it, but yesterday (Thursday afternoon) we had a ceiling at 900' when we arrived...enough for the VOR 36 approach which we used, but a glide slope would have been nice.

[dpansier]

With all the uncoordinated ground movements this week, I believe it would be very difficult to insure the ILS safe areas are clear.

[FS-MP]

Can anyone tell me the CURRENT "Magnetic" heading of runway 36 @ KOSH. ?

Current charts are still displaying it as 359 deg (magnetic), -- and have been for the past 20 years. !

Current charts seem to be based on the old 1975 Mag var of 1 deg East.

From Satellite images, the TRUE Heading of 36 is 0.54 deg

So back in 1975 True + mag Dev = 0.54 - 1.0 = 359.50 >>> 359 when rounded off.

CORRECT

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In 2012, the Mag var is about 2.461°W (Note Now WEST)

So Mag Course of 36 is 0.54 + 2.461 = 3.001 >>>> 3 when rounded off.

So current Charts have an Appr Course for 36 that is 4 degs off.

Flying the ILS 36, one would get the false impression that there is a strong crosswind wind blowing from the EAST, when the winds are actually calm.

So, how far off does a Charts Mag Appr Course have to be , before it is updated on a chart ??


Geoff

[Jim Hann]

With all the uncoordinated ground movements this week, I believe it would be very difficult to insure the ILS safe areas are clear.

Warbirds are parked in part of the critical zone near the antenna. Last year there was an F-16 (and FJ4) parked nearby part of the week too! :eek:

[FlyingRon]

The warbirds block the localizer, there are other things (Fireengines, the FAA moo cows, etc...) blocking the GS.