diff --git a/Aircraft-yasim/c172.xml b/Aircraft-yasim/c172.xml
index fe8c05d95..5fa89df20 100644
--- a/Aircraft-yasim/c172.xml
+++ b/Aircraft-yasim/c172.xml
@@ -1,7 +1,7 @@
 <airplane mass="1950">
 
 <!-- Approach configuration -->
-<approach speed="40" aoa="16">
+<approach speed="43" aoa="16">
   <control axis="/controls/throttle[0]" value="0.3"/>
   <control axis="/controls/mixture[0]" value="1.0"/>
   <control axis="/controls/flaps" value="1.0"/>
@@ -60,11 +60,11 @@
   <control axis="/controls/rudder" output="STEER"/>
 </gear>
 
-<gear x="-2.73" y="1.15" z="-1.36" compression=".3"> <!-- left main -->
+<gear x="-2.82" y="1.15" z="-1.36" compression=".3"> <!-- left main -->
   <control axis="/controls/brakes[0]" output="BRAKE"/>
 </gear>
 
-<gear x="-2.73" y="-1.15" z="-1.36" compression=".3"> <!-- left main -->
+<gear x="-2.82" y="-1.15" z="-1.36" compression=".3"> <!-- left main -->
   <control axis="/controls/brakes[1]" output="BRAKE"/>
 </gear>
 
diff --git a/Aircraft-yasim/c310.xml b/Aircraft-yasim/c310.xml
index d365e851f..27a75c893 100644
--- a/Aircraft-yasim/c310.xml
+++ b/Aircraft-yasim/c310.xml
@@ -5,8 +5,8 @@
   <control axis="/controls/throttle[1]" value="0.4"/>
   <control axis="/controls/mixture[0]" value="1.0"/>
   <control axis="/controls/mixture[1]" value="1.0"/>
-  <control axis="/controls/propellor-pitch[0]" value="0.5"/>
-  <control axis="/controls/propellor-pitch[1]" value="0.5"/>
+  <control axis="/controls/propeller-pitch[0]" value="0.5"/>
+  <control axis="/controls/propeller-pitch[1]" value="0.5"/>
   <control axis="/controls/flaps" value="1.0"/>
 </approach>
 <cruise speed="223" alt="20000">
@@ -14,8 +14,8 @@
   <control axis="/controls/throttle[1]" value="1.0"/>
   <control axis="/controls/mixture[0]" value="1.0"/>
   <control axis="/controls/mixture[1]" value="1.0"/>
-  <control axis="/controls/propellor-pitch[0]" value="1.0"/>
-  <control axis="/controls/propellor-pitch[1]" value="1.0"/>
+  <control axis="/controls/propeller-pitch[0]" value="1.0"/>
+  <control axis="/controls/propeller-pitch[1]" value="1.0"/>
   <control axis="/controls/flaps" value="0.0"/>
 </cruise>
 
@@ -76,7 +76,7 @@
   <actionpt x="-1.53" y="1.83" z="0.07"/>
   <control axis="/controls/throttle[0]" output="THROTTLE"/>
   <control axis="/controls/mixture[0]" output="MIXTURE"/>
-  <control axis="/controls/propellor-pitch[0]" output="ADVANCE"/>
+  <control axis="/controls/propeller-pitch[0]" output="ADVANCE"/>
 </propeller>
 
 <propeller x="-2.56" y="-1.83" z="0.07"
@@ -89,7 +89,7 @@
   <actionpt x="-1.53" y="-1.83" z="0.07"/>
   <control axis="/controls/throttle[1]" output="THROTTLE"/>
   <control axis="/controls/mixture[1]" output="MIXTURE"/>
-  <control axis="/controls/propellor-pitch[1]" output="ADVANCE"/>
+  <control axis="/controls/propeller-pitch[1]" output="ADVANCE"/>
 </propeller>
 
 <ballast x="-2.78" y="0.26" z="0.0" mass="180"/> <!-- pilot -->