diff --git a/Startup/777-commercial.xml b/Startup/777-commercial.xml
new file mode 100644
index 000000000..61271b99b
--- /dev/null
+++ b/Startup/777-commercial.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0"?>
+
+<!--
+************************************************************************
+Some things that ATC likes to know about.
+Durk Talsma Sept-17, 2011.
+************************************************************************
+-->
+
+<PropertyList>
+    <sim>
+        <atc>
+            <acradius type="double">41</acradius>
+            <flight-type type="string">gate</flight-type>
+            <airline type="string">NONE</airline>
+        </atc>
+    </sim>
+</PropertyList>
diff --git a/Startup/c172p.xml b/Startup/c172p.xml
new file mode 100644
index 000000000..ef62e95ea
--- /dev/null
+++ b/Startup/c172p.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0"?>
+
+<!--
+************************************************************************
+Some things that ATC likes to know about.
+Durk Talsma Sept-17, 2011.
+************************************************************************
+-->
+
+<PropertyList>
+    <sim>
+        <atc>
+            <acradius type="double">5</acradius>
+            <flight-type type="string">ga</flight-type>
+            <airline type="string">NONE</airline>
+        </atc>
+    </sim>
+</PropertyList>