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Is There Any Class D Airspace With A Shelf?  
User currently offlineShaun3000 From United States of America, joined Mar 2002, 445 posts, RR: 0
Posted (11 years 10 months 2 weeks 3 hours ago) and read 3042 times:

Simple question: is there any class D airspace in the US with a shelf? By shelf I mean a portion of D airspace that starts at some point AGL, like at most C and B airports. I have heard people mention that they thought there are a few examples of D airspace with a shelf. I know D is usually just a single cylinder.

Thanks

7 replies: All unread, jump to last
 
User currently offlineAA_Cam From , joined Dec 1969, posts, RR:
Reply 1, posted (11 years 10 months 2 weeks 2 hours ago) and read 3022 times:

It is common to see abnormally shaped class D which has been designed with the Instrument procedures that go along with an airport in mind. Sometimes you will see a box outside the normal cylinder, extended out from the centerline of a major runway. This is to keep the aircraft in a smooth transition between class E to D, without scraping the top of the G airspace which comes up to 700 ft AGL at those areas... (inside the magenta "fade", outside the blue dotted line).. That way ATC always has "control" over the aircraft.
So no, Class D isn't always a cylinder.. But no, I haven't seen shelves. Sometimes you'll also see those same boxes, except defined in magenta dotted lines... Inside this space. This space is not class D, its class E, but instead of flooring out at 700 AGL, it goes all the away to the ground... The purpose of this, again to assist in the aircraft on approach to transition from class E to D, without wandering into G.

Hope this helps!!

Cameron


User currently offlineRalgha From United States of America, joined Nov 1999, 1614 posts, RR: 6
Reply 2, posted (11 years 10 months 1 week 6 days 14 hours ago) and read 2977 times:

That extra box is almost always class E, not D.


09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0
User currently offlineUSAFHummer From United States of America, joined May 2000, 10685 posts, RR: 53
Reply 3, posted (11 years 10 months 1 week 6 days 11 hours ago) and read 2948 times:

While I personally havent seen tiered Class D airspace on a chart...what some class D airports have is a TRSA...which is two tiered airspace, similar in shape (not necessarily size though) to Class C airspace...airports that have this to my knowledge include ERI (Erie, PA) and AVP (Scranton/Wilkes-Barre, PA)...

Greg



Chief A.net college football stadium self-pic guru
User currently offlineSaxman66 From United States of America, joined Sep 2000, 518 posts, RR: 0
Reply 4, posted (11 years 10 months 1 week 5 days 7 hours ago) and read 2938 times:

Cameron, what kind of question is this? Class D with a shelf? cmon! jk. I've never seen class D with a shelf. That would probably make it class C. But if you really want why don't you come over to my room a couple doors down, and we'll discuss this question, in which you ponder.

Thanks, -TEX-



Ride Amtrak!
User currently offlineNormalSpeed From , joined Dec 1969, posts, RR:
Reply 5, posted (11 years 10 months 1 week 5 days 6 hours ago) and read 2924 times:

I was going to say this, but Saxman beat me to it:

Yes, there is such a thing as Class D with a shelf; it's called Class C.

'Speed


User currently offlineAA_Cam From , joined Dec 1969, posts, RR:
Reply 6, posted (11 years 10 months 1 week 5 days 5 hours ago) and read 2920 times:

Oh cmon TEX... I didnt ask the question... and like I said.. there are no Class D airspace (that I know of) that have shelves!! But there is Class D airspace that has approach departure tears... such as Grand Forks AFB.. check it out on your Twin Cities Sectional.

Now that the Joking has been put aside...

RALGHA.. Yes.. it is more common to see those boxes as Class E, in Magenta Segmented Lines... HOWEVER, it is not at all uncommon to see those boxes to be Blue Segmented Lines, as CLASS D airspace.. it does happen. Grand Forks AFB is a good example. Another good example is Mansfield (KMFD)... KNFW, Clinton-Sherman (KCSM), Sheppard AFB (KSPS), Mc Kinney (KTKI), Chyenne (KCYS) and Ellsworth AFB (KRCA), are all also good examples of this Class D box.

Cameron


User currently offlineShaun3000 From United States of America, joined Mar 2002, 445 posts, RR: 0
Reply 7, posted (11 years 10 months 1 week 3 days 3 hours ago) and read 2885 times:

Alrighty, just wonderin. I didn't think so but ya never know.

Thanks for the replies


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