diff --git a/Moose Development/Moose/Ops/Airboss.lua b/Moose Development/Moose/Ops/Airboss.lua
index 1b9355b11..95efbcf27 100644
--- a/Moose Development/Moose/Ops/Airboss.lua	
+++ b/Moose Development/Moose/Ops/Airboss.lua	
@@ -12122,16 +12122,18 @@ function AIRBOSS:_LSOgrade( playerData )
   local GIC, nIC = self:_Flightdata2Text( playerData, AIRBOSS.GroovePos.IC )
   local GAR, nAR = self:_Flightdata2Text( playerData, AIRBOSS.GroovePos.AR )
 
+  -- VTOL approach, which is graded differently (currently only Harrier).
+  local vtol=playerData.actype==AIRBOSS.AircraftCarrier.AV8B
+
   -- Put everything together.
   local G = GXX .. " " .. GIM .. " " .. " " .. GIC .. " " .. GAR
 
-  -- Count number of minor, normal and major deviations.
+  -- Count number of minor/small nS, normal nN and major/large deviations nL.
   local N=nXX+nIM+nIC+nAR
-  local Nv=nXX+nIM
   local nL=count(G, '_')/2
   local nS=count(G, '%(')
   local nN=N-nS-nL
-  local nNv=Nv-nS-nL
+
 
   -- Groove time 15-18.99 sec for a unicorn. Or 60-65 for V/STOL unicorn.
   local Tgroove=playerData.Tgroove
@@ -12147,34 +12149,64 @@ function AIRBOSS:_LSOgrade( playerData )
     G = "Unicorn"
   else
 
-    -- Add AV-8B Harrier devation allowances due to lower groundspeed and 3x conventional groove time, this allows to maintain LSO tolerances while respecting the deviations are not unsafe.--Pene testing
-      -- Large devaitions still result in a No Grade, A Unicorn still requires a clean pass with no deviation.
-  if nL > 1 and playerData.actype==AIRBOSS.AircraftCarrier.AV8B then
-      -- Larger deviations ==> "No grade" 2.0 points.
-      grade="--"
-      points=2.0
-  elseif nNv >= 1 and playerData.actype==AIRBOSS.AircraftCarrier.AV8B then
-      -- Only average deviations ==>  "Fair Pass" Pass with average deviations and corrections.
-      grade="(OK)"
-      points=3.0
-  elseif nNv < 1 and playerData.actype==AIRBOSS.AircraftCarrier.AV8B then
-      -- Only minor average deviations ==>  "OK" Pass with minor deviations and corrections. (test nNv<=1 and)
-      grade="OK"
-      points=4.0
-  elseif nL > 0 then
-      -- Larger deviations ==> "No grade" 2.0 points.
-      grade="--"
-      points=2.0
-  elseif nN> 0 then
-      -- No larger but average deviations ==>  "Fair Pass" Pass with average deviations and corrections.
-      grade="(OK)"
-      points=3.0
-  else
-      -- Only minor corrections
-      grade="OK"
-      points=4.0
-  end
+    if vtol then
 
+      -- Add AV-8B Harrier devation allowances due to lower groundspeed and 3x conventional groove time, this allows to maintain LSO tolerances while respecting the deviations are not unsafe.--Pene testing
+      -- Large devaitions still result in a No Grade, A Unicorn still requires a clean pass with no deviation.
+
+      -- Normal laning part at the beginning
+      local Gb = GXX .. " " .. GIM
+
+      -- Number of deviations that occurred at the the beginning of the landing (XX or IM). These are graded like in non-VTOL landings, i.e. on deviations is 
+      local N=nXX+nIM
+      local nL=count(Gb, '_')/2
+      local nS=count(Gb, '%(')
+      local nN=N-nS-nL
+
+
+      -- VTOL part of the landing
+      local Gv = GIC .. " " .. GAR
+
+      -- Number of deviations that occurred at the the end (VTOL part) of the landing (IC or AR).
+      local Nv=nIC+nAR
+      local nLv=count(Gv, '_')/2
+      local nSv=count(Gv, '%(')
+      local nNv=Nv-nSv-nLv
+
+      if nL>0 or nLv>1 then
+          -- Larger deviations at XX or IM or at least one larger deviation IC or AR==> "No grade" 2.0 points.
+          -- In other words, we allow one larger deviation at IC+AR 
+          grade="--"
+          points=2.0
+      elseif nN>0 or nNv>1 or nLv==1 then
+          -- Average deviations at XX+IM or more than one normal deviation IC or AR ==>  "Fair Pass" Pass with average deviations and corrections.
+          grade="(OK)"
+          points=3.0
+      else
+          -- Only minor corrections
+          grade="OK"
+          points=4.0
+      end
+
+    else
+
+      -- This is a normal (non-VTOL) landing.
+
+      if nL > 0 then
+          -- Larger deviations ==> "No grade" 2.0 points.
+          grade="--"
+          points=2.0
+      elseif nN> 0 then
+          -- No larger but average/normal deviations ==>  "Fair Pass" Pass with average deviations and corrections.
+          grade="(OK)"
+          points=3.0
+      else
+          -- Only minor corrections ==> "Okay pass" 4.0 points.
+          grade="OK"
+          points=4.0
+      end
+
+    end
   end
 
   -- Replace" )"( and "__"