Approach Charts

[Nikes]

Hello I have 3 quick questions,

When looking at the Alaska approach book I saw an approach called a Y ILS 23, what does the Y mean?

I also noticed black stripping similar to a “barber pole” at the bottom of the page on two approaches in the book, again does any body know what they did is for?

And lastly is there and good books/websites, which contain a comprehensive NOS approach chart legend?

Thanks,

Nikes

 

[midlifeflyer]

When looking at the Alaska approach book I saw an approach called a Y ILS 23, what does the Y mean?

You'll see that there's also a "regular" ILS 23 approach to the same airport. When there are multiple procedures using the same FAC guidance, they throw the Y or Z in. Another example is DFW, where there an ILZ 18L and an ILS Z 18L approach.

I also noticed black stripping similar to a “barber pole” at the bottom of the page on two approaches in the book, again does any body know what they did is for?

I'm not sure on this one. I seem to recall that striped borders indicate a new procedure, but I'm not at all sure about that.

And lastly is there and good books/websites, which contain a comprehensive NOS approach chart legend?

NACO produces an Aeronautical Chart Users Guide which has almost all of the symbols for all of the different FAA charts. It's available at most pilot shops.

 

[A Squared]

Nikes,

Midlifeflyer is correct about the letter in the approach it's for when you have 2 different approaches using the same navaid. I'm not sure what midlife meant by "FAC", not that it's incorrect, just that I'm not familiar with the abreviation. For example Nome has 2 ILS prodedures for runway 27. They are named ILS Y RWY 27 and ILS Z Rwy 27. They both use the frequency 108.7, but the procedures are different, the IAFs are different and the transitions are different.

The approaches with the barber pole stripes around the edges are high altitude, rapid descent approaches. They are for military aircraft, and you'll find them at military bases and airports which the military usues frequently.

regards

 

[midlifeflyer]

Nikes,

Midlifeflyer is correct about the letter in the approach it's for when you have 2 different approaches using the same navaid. I'm not sure what midlife meant by "FAC", not that it's incorrect, just that I'm not familiar with the abbreviation.

"Final approach course."

The approaches with the barber pole stripes around the edges are high altitude, rapid descent approaches.

Ah, yes, thanks

 

[A Squared]

"Final approach course.

right, got it. Thanks

 

[80/20]

The chart user's guide is available in pdf for free download at:
http://naco.faa.gov/index.asp?xml=naco/online/aero_guide

You asked a related question about DOD and NOS charts on the military forum.
The layout for both are in principle based on the same specs.
(IACC No XX - U.S. Government Specifications for Flight Information Publications - Low Altitude Instrument Approach Procedures - issued by the Inter Agency Charting Committee)