diff --git a/static/css/adsb_dashboard.css b/static/css/adsb_dashboard.css
index 286fac9..421f613 100644
--- a/static/css/adsb_dashboard.css
+++ b/static/css/adsb_dashboard.css
@@ -211,9 +211,9 @@ body {
 
 .acars-collapse-btn {
     position: absolute;
-    right: 0;
+    left: 0;
     top: 50%;
-    transform: translateY(-50%);
+    transform: translateX(-100%) translateY(-50%);
     width: 24px;
     height: 80px;
     background: var(--bg-card);
@@ -228,14 +228,10 @@ body {
     justify-content: center;
     gap: 6px;
     padding: 8px 0;
-    transition: background 0.2s, right 0.3s ease;
+    transition: background 0.2s;
     z-index: 100;
 }
 
-.acars-sidebar.collapsed .acars-collapse-btn {
-    right: 100%;
-}
-
 .acars-collapse-btn:hover {
     background: rgba(74, 158, 255, 0.2);
 }
diff --git a/templates/adsb_dashboard.html b/templates/adsb_dashboard.html
index 07fcb70..42902bb 100644
--- a/templates/adsb_dashboard.html
+++ b/templates/adsb_dashboard.html
@@ -56,7 +56,7 @@
         <!-- ACARS Panel (right of map) - Collapsible -->
         <div class="acars-sidebar" id="acarsSidebar">
             <button class="acars-collapse-btn" id="acarsCollapseBtn" onclick="toggleAcarsSidebar()" title="Toggle ACARS Panel">
-                <span id="acarsCollapseIcon">◀</span>
+                <span id="acarsCollapseIcon">▶</span>
                 <span class="acars-collapse-label">ACARS</span>
             </button>
             <div class="acars-sidebar-content" id="acarsSidebarContent">
diff --git a/templates/index.html b/templates/index.html
index def69ac..763bf19 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -1210,7 +1210,7 @@
                         <!-- ACARS Sidebar (Collapsible) -->
                         <div class="main-acars-sidebar" id="mainAcarsSidebar">
                             <button class="main-acars-collapse-btn" onclick="toggleMainAcarsSidebar()" title="Toggle ACARS">
-                                <span id="mainAcarsCollapseIcon">◀</span>
+                                <span id="mainAcarsCollapseIcon">▶</span>
                                 <span class="main-acars-collapse-label">ACARS</span>
                             </button>
                             <div class="main-acars-content" id="mainAcarsContent">
@@ -1572,9 +1572,9 @@
                     }
                     .main-acars-collapse-btn {
                         position: absolute;
-                        right: 0;
+                        left: 0;
                         top: 50%;
-                        transform: translateY(-50%);
+                        transform: translateX(-100%) translateY(-50%);
                         width: 22px;
                         height: 70px;
                         background: rgba(0,0,0,0.6);
@@ -1589,12 +1589,9 @@
                         justify-content: center;
                         gap: 5px;
                         padding: 6px 0;
-                        transition: background 0.2s, right 0.3s ease;
+                        transition: background 0.2s;
                         z-index: 100;
                     }
-                    .main-acars-sidebar.collapsed .main-acars-collapse-btn {
-                        right: 100%;
-                    }
                     .main-acars-collapse-btn:hover {
                         background: rgba(74, 158, 255, 0.2);
                     }
@@ -2390,7 +2387,6 @@
                 initBtRadar();
             } else if (mode === 'aircraft') {
                 checkAdsbTools();
-                checkAcarsTools();
                 initAircraftRadar();
             } else if (mode === 'satellite') {
                 initPolarPlot();