I can't leave a comment so I will leave an answer. I don't have a solid answer but I have a few bread crumbs that might be helpful.
see the comment on page 5 — https://discussions.apple.com/thread/5101886?start=60&tstart=0 by user "_r_s_"
Also
1) Open airport utility
2) Double click your airport device from the window or click the device and then click the edit button.
3) Now go to File>Export Configuration File
4) Open the .baseconfig file in your favorite editor
5) Now go to http://aldentech.wnyric.org/webshare/mkempste/AirPort%20Utility%20copy.app/Contents/Resources/English.lproj/AirPortSettings.strings to help you sort out what all the strings mean.
6) Edit your base config file — Use the site below to find out the strings meaning in the .baseconfig file and edit the file to yield the result you are looking for.
7) Import the file back to your airport device and it should give you the features it is capable of.
I am posting these steps because Apple has removed SNMP for Airport Utility but they appear to be in the XML.
If you are willing please leave a link to your project.