Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

Class E question, getting prepared for part 107 certification

Discussion in 'Rules and Regulations' started by lalvar40, Aug 22, 2016.

  1. lalvar40

    Joined:
    May 10, 2014
    Messages:
    281
    Likes Received:
    51
    Location:
    Weston, Florida
    Team,
    I am studying for knowledge test. I am not a pilot. Hope you can clarify this about class E and G airspace. If you look at Barnes County airport ( BAC), what is the floor of Class E inside and outside the magenta circle, is it 700 feet AGL, or 1,200 AGL...why..how you know? I cant differentiate it based on charts legends. I think this is important for UAS remote pilots as we can fly in class G, and the floor of class E will be our class G ceiling.

    upload_2016-8-22_10-52-14.png
     

    Attached Files:

  2. Richard R

    Joined:
    Jan 27, 2016
    Messages:
    666
    Likes Received:
    244
    Location:
    Ohio
    Magenta means that the floor starts at 700 AGL. Blue is for 1200 AGL. in either case, the floor is above our 'max' altitude. as an additional note: if there are dashed magenta lines around the airport, Class E starts at the surface under certain conditions. You have to check the NOTAMS or contact the appropriate FSS to find out what they are.
     
  3. lalvar40

    Joined:
    May 10, 2014
    Messages:
    281
    Likes Received:
    51
    Location:
    Weston, Florida
    so, you mean inside the magenta circle is 700, outside is 1200...that is not clear with these legends...you are right when dashed, floor is sfc. But outside of E, it is not clear what is the height.

    upload_2016-8-22_11-11-4.png
     
  4. Richard R

    Joined:
    Jan 27, 2016
    Messages:
    666
    Likes Received:
    244
    Location:
    Ohio
    No, look at the images you posted. - inside the magenta, the floor is 700 AGL, outside, you are in class G. Inside the blue, floor is 1200 AGL, outside you are in class G.
     
  5. lalvar40

    Joined:
    May 10, 2014
    Messages:
    281
    Likes Received:
    51
    Location:
    Weston, Florida
    yes, but we are at G up to where E starts, which can be 700 or 1,200...don't know how to tell based on sectional chart.
     
  6. N017RW

    Joined:
    May 2, 2014
    Messages:
    6,244
    Likes Received:
    1,614
    Location:
    Palm Beach Co.- FL
    This is all true.

    However...
    ...IIRC, sUAS pilots operating under 107 will require ATC notification (in writing) while operating AT ANY altitude in Class E airspace as indicated by the outlines discussed here.

    Also, Class E does not always coincide with an airport.
     
    jofus likes this.
  7. Richard R

    Joined:
    Jan 27, 2016
    Messages:
    666
    Likes Received:
    244
    Location:
    Ohio
    Again, A magenta circle means that the floor is 700 ft AGL and a blue one indicates 1200 AGL. Simple and straightforward.
     
    Falcon900 likes this.
  8. Richard R

    Joined:
    Jan 27, 2016
    Messages:
    666
    Likes Received:
    244
    Location:
    Ohio
    N017RW is correct. No entry into the lateral boundaries of Class E airspace without prior approval. Class E is usually used to protect the instrument approaches to airports instrument approach procedures (IAP) but with no tower or space around airways (although those are usually too high to concern drone operators . In my hometown, the Class E (sfc) space is a corridor to the NE of the airport outside the normal 5 nm radius.
     
    Falcon900 and N017RW like this.
  9. N42742

    Approved Vendor

    Joined:
    Jul 18, 2016
    Messages:
    220
    Likes Received:
    131
    Location:
    Atlanta
    A couple of clarifications. Dashed magenta >always< indicates Class E starting at the surface. In the absence of other symbology, Class E starts at its default of 1200 AGL. Also you may operate in Class E without authorization (if you were on or adjacent to a tower, for example) unless the Class E is designated for an airport.
     
    Falcon900 likes this.
  10. jofus

    Joined:
    May 11, 2016
    Messages:
    74
    Likes Received:
    50
    Location:
    AL
    Nailed it.

    I have a related question. I've pulled up the sectional chart on my city, and now I'm confused. I've flown around in the city limits outside of the Redstone Arsenal Class D airspace, and sometimes underneath the outer shelf of the Huntsville Class C, but it looks like RSA has a Class E extension that envelopes the entire city! And on closer look, Huntsville Intl appears to have class E surrounding the inner cylinder of the Class C space, underneath the shelf.

    No other tool I have used says anything about this being class E airspace, including B4Ufly, Hover, DJI Go, or AirMap. What gives? Looks like every little dinky airport out here has Class E airspace, and that means I'd have to get ATC authorization to fly anywhere other than the middle of nowhere?

    [​IMG]
    [​IMG]
    [​IMG]
     

    Attached Files:

    #10 jofus, Aug 25, 2016
    Last edited: Aug 26, 2016
  11. lalvar40

    Joined:
    May 10, 2014
    Messages:
    281
    Likes Received:
    51
    Location:
    Weston, Florida
    well, if I have learned about airspaces, the key here is the altitude. This airport is D up to 2,400 feet, then, it becomes class C up to 4,600. Then, it becomes E up to 18,000. Pls, is there a pilot around, can u reconfirm?
     
  12. Richard R

    Joined:
    Jan 27, 2016
    Messages:
    666
    Likes Received:
    244
    Location:
    Ohio
    Those class e airspaces such as around Huntsville Exec start at 700' AGL. So if you are flying below 400 ', no notice required. Note that if you are hobby flying, you would still need to notify them if you are flying within 5 miles.
     
    Falcon900 likes this.
  13. Huskerfan

    Joined:
    Jul 14, 2015
    Messages:
    210
    Likes Received:
    52
    So, that's the difference in us getting our licenses in this case. If hobby, we need to notify, if we have license and flying below 400 feet and within 5 miles no notice required?
     
  14. jofus

    Joined:
    May 11, 2016
    Messages:
    74
    Likes Received:
    50
    Location:
    AL
    Part 107 states that you must have ATC authorization to operate within the lateral limits of Class E airspace that is designated for an airport. That seems to me that altitude is irrelevant in this case. Apparently I'm cool to fly outside the 5 mile radius of Redstone for fun, but as soon as I want to make a buck I have to get ATC authorization within a much larger radius... Doesn't make sense to me
     
    #14 jofus, Aug 25, 2016
    Last edited: Aug 26, 2016
  15. Unmannedsky

    Joined:
    Aug 25, 2016
    Messages:
    60
    Likes Received:
    11
    I think I can help clarify this issue. Important distinction to note here is that 107.41 talks about the lateral boundaries of the "SURFACE" area of class E. That is the dashed magenta lines around the airport not the fuzzy magenta circle area. The dashed lined areas show where Class-E goes all the way to the ground. The fuzzy magenta circles show where Class-E floor is at 700 feet above ground, well above our 400' limit. I've attached an image to show the two different areas.

    Does that help?
     

    Attached Files:

  16. jofus

    Joined:
    May 11, 2016
    Messages:
    74
    Likes Received:
    50
    Location:
    AL
    Ahhh I was thinking that the surface area was in reference to the shape of the airspace, not the area of Class E that starts at the surface of the Earth.
     
    Unmannedsky likes this.
  17. Richard R

    Joined:
    Jan 27, 2016
    Messages:
    666
    Likes Received:
    244
    Location:
    Ohio
    I agree, that's the way I read the ref too.
     
    Unmannedsky likes this.
  18. N42742

    Approved Vendor

    Joined:
    Jul 18, 2016
    Messages:
    220
    Likes Received:
    131
    Location:
    Atlanta
    Good catch, unmannedsky. It does specify the surface area of Class E.
     
    Unmannedsky and jofus like this.
  19. Unmannedsky

    Joined:
    Aug 25, 2016
    Messages:
    60
    Likes Received:
    11
    Thanks! I think many will be surprised at the nuanced manner of question phrasing and legal-speak in the FAA testing/reg world. Everybody read closely! I can't tell you how many questions I knew the answer to but got wrong because I rushed through the reading... :confused: