Stupid chart question

ozone

ozone

Well-Known Member
having never flown out east, and moving there soon, I was wondering what the heck the "east coast low control area" and the "atlantic low control area" is/are? They both have the staggered blue lines and say 2000msl and 5000msl respectively. Does that mean you are in the control area at or below 2000msl or does it mean that if you are between 2000msl and 5000msl, you are ok? Anyway, just wondering ahead of time since Colorado doesnt have this stuff.
 
Copy/paste from another website:

"What you are seeing on the NY sectional is an area where Class E airspace begins at an altitude higher than the usual 1200 MSL. The first section begins at 2000' MSL as denoted by the heavy blue jogged line, and the next section begins at 5500' MSL also denoted by the same type of line. This airspace exists over the water there to provide controlled airspace where no airways exist. You can read more about it here:

http://www.faa.gov/airports_airtraffic/air_traffic/publications/atpubs/AIR/air1901.html"

Note: The original link was dead. I searched the FAA website for "Atlantic Low Control" and this was the first result, and has the same 'air1901.html' extension.

Thanks for asking that question. I never noticed it on the chart nor know what it was.
 
Just for clarification, are you referring to the blue bold jogged lines that can be found in mountainous terrain as well? If you go onto skyvector.com and go to kcpr, you'll see these lines along the airway routes. So it is something that is not only on the East coast, but other places too.
 
Are you talking about the blue Zipper that says something like 2700MSL inside of it? Just means its class G till 2699 then E up i believe.
 
Crockrocket94 said:
Are you talking about the blue Zipper that says something like 2700MSL inside of it? Just means its class G till 2699 then E up i believe.
Click to expand...

Yes, the blue zipper.

And i do see that near KCPR, there are similar zippers. It's just the designation of "east coast low airway" was odd to me. I also just noticed on the KCPR section of the chart that the legend states "differentiates floors of class E airspace greater than 700 ft above surface"

So, I guess this means that you are officially in class G airspace if you go from KBVY to KACK, stay below 2000 feet, AND circle east around the cape then (of course avoiding the MOA's for safety)? Or did I read that wrong?
 
ozone said:
Yes, the blue zipper.

And i do see that near KCPR, there are similar zippers. It's just the designation of "east coast low airway" was odd to me. I also just noticed on the KCPR section of the chart that the legend states "differentiates floors of class E airspace greater than 700 ft above surface"

So, I guess this means that you are officially in class G airspace if you go from KBVY to KACK, stay below 2000 feet, AND circle east around the cape then (of course avoiding the MOA's for safety)? Or did I read that wrong?
Click to expand...

The way I am reading the chart is that if you do that flight plan, from KBVY to KACK direct, you still abide by the 700AGL and 1200AGL rules. If you look to the east, you will see two rows of zippers. Between these zippers is the 2000MSL, and on the very east side of the zippers is 5000MSL. So BETWEEN the zippers, E starts at 2000MSL. On the east side, E starts at 5000MSL. But on the west side including the area around the cape, E still starts at 1200AGL over the ocean, and of course 700AGL when inside the shaded magenta.

So now I confused you. Take it in, let is soak, and reread it all over again. :D
 
The "Low Airway" might be an NDB airway(Low frequency) as opposed to the vor airway(high frequency). I read that some low frequency airways were still used on the east coast, but I have never been out that way. Probably just a zipper denoting the class e floor for a ndb airway.
 
ozone said:
having never flown out east, and moving there soon, I was wondering what the heck the "east coast low control area" and the "atlantic low control area" is/are? .
Click to expand...
"Low Control" (and "High Control") are names used to describe Offshore Airspace Areas. They are a subgroup of Class E airspace that is designated in some places more than 12 miles from the shore. There's a short description of them in the AIM at 3-2-6

==============================
Offshore Airspace Areas. There are Class E airspace areas that extend upward from a specified altitude to, but not including, 18,000 feet MSL and are designated as offshore airspace areas. These areas provide controlled airspace beyond 12 miles from the coast of the U.S. in those areas where there is a requirement to provide IFR en route ATC services and within which the U.S. is applying domestic procedures.
==============================

You can find more of a description here: http://www.faa.gov/airports_airtraffic/air_traffic/publications/atpubs/AIR/air1901.html

btw, they are in the west also. Check out the Pacific low control area just off the coast west of San Luis Opisbo (KSBP)
 
welle036 said:
The "Low Airway" might be an NDB airway(Low frequency) as opposed to the vor airway(high frequency). I read that some low frequency airways were still used on the east coast, but I have never been out that way. Probably just a zipper denoting the class e floor for a ndb airway.
Click to expand...
Not quite what he's looking at, but yes there are still NDB airways out East in the coastal areas of the carolinas for sure. If you want to have some fun with a student pilot, get a seminole or something similar with a barely functioning ADF and have them file for those airways. More fun than a partial panel single engine NDB approach.

-mini
 
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