Fixes #5864 - Fix Mildenhall (EGUN) MATZ Sector Ownership (#5877)

* Update Sector_Ownership.txt

* Update Sector_Boundaries.txt

* Update CHANGELOG.md

* Update Sector_Boundaries.txt

Co-authored-by: H <[email protected]>

* Fix border line name

---------

Co-authored-by: Harry S <[email protected]>
Co-authored-by: Lily <[email protected]>

Author: 3 people

.github/CHANGELOG.md

@@ -5,6 +5,7 @@
 4. Bug - Corrected Inverness (EGPE) SMAA Labels for area A and E - thanks to @PLM1995
 5. Procedure Change - Implemented Polaris 2026/02 LoA: new ENOR frequencies and removal of EURN_FSS
 6. Enhancement - Implemented Salisbury Information - thanks to @mid-archie (Archie Middlefell)
+7. Bug- Fixed Mildenhall (EGUN) MATZ Sector Ownership - thanks to @ricky-gag38 (Riccardo Gagliardi)
 
 # Changes from release 2025/13 to 2026/01
 1. AIRAC (2513) - Updated Shoreham (EGKA) runway headings - thanks to @deconfilction (Sonny Nixon)

Airports/EGUN/Sector_Boundaries.txt

@@ -1,3 +1,7 @@
 CIRCLE_SECTORLINE:UNTWR:EGUN:2.5
 DISPLAY:UNTWR:UNTWR:UNAPP
-DISPLAY:UNAPP:UNAPP:UNTWR
+DISPLAY:UNAPP:UNAPP:UNTWR
+
+CIRCLE_SECTORLINE:UNAPP MATZ:EGUN:5
+DISPLAY:Swanwick Mil East:Swanwick Mil East:UNAPP
+DISPLAY:UNAPP:UNAPP:Swanwick Mil East

Airports/EGUN/Sector_Ownership.txt

@@ -9,7 +9,8 @@ BORDER:UNTWR
 DEPAPT:EGUN
 ARRAPT:EGUN
 
-SECTOR:UNAPP:0:2000
+SECTOR:UNAPP:0:3000
 OWNER:ULR:VVE:VV
+BORDER:UNAPP MATZ
 DEPAPT:EGUN
 ARRAPT:EGUN