Squawk codes around the NTTR

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Message posted by Joerg (Webmaster) (Member since 10/17/2000) on August 21, 2021 at 11:48:41 PST:

One of the projects I have been working on over the last several months is identifying squawk codes used by aircraft in the NTTR. In particular code blocks 01xx-04xx, per FAA order JO 7110.66F defined as "Allocated to Service Area Operations for use by Terminal/CERAP, NAS Stakeholder, Unique Purpose and Experimental activities". Below is what I have so far, based on my Mode-S logs in Rachel between 5/20 and 8/21 and flight history from ADSBExchange.com. Comments/corrections welcome.

01xx - R-2508
02xx - Las Vegas TRACON
020x - Draken & civilian contractor (BAe avionics testbed) in NTTR
021x - Draken & civilian contractor (BAe avionics testbed) in NTTR
022x - Not used
023x - Military aircraft in NTTR
024x - Military aircraft & Draken in NTTR
025x - Not used
026x - Draken in Desert MOA
027x - Military aircraft in Desert MOA
03xx - Dreamland
030x - Not used
031x - Not used
032x - Mission Support Aircraft (Beech Janets, Avionics Testbed)
033x - Janets, civilian contractors
034x - Draken as Dreamland mission aircraft
035x - Military mission aircraft & Janets TNX->XTA
036x - Military mission aircraft & Janets XTA->TNX
0377 - Tanker in northern MOAs
04xx - R2508

Note: In almost all these blocks I also found commercial airliners within my coverage area using the same codes. Squawk code blocks are not unique. Other ATC entities use the same blocks. And some squawk codes in over 335k logged flights appear to be just plain data entry errors.


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