Addit! Pro For Flight Simulator X
I installed an aircraft but it does not appear in Flight Simulator X.
There are a few reasons why an aircraft you install may not appear in Flight Simulator:
The aircraft addon was not installed properly
Try reinstalling the addon only this time accept as many default values as possible -- Addit! Pro usually knows what's best.
The addon was installed to the File Cabinet
Did you install the aircraft into Addit! Pro's File Cabinet? If so, it won't appear in the Edit Aircraft display or in Flight Simulator. Be sure to install the addon directly to Flight Simulator.
The aircraft is hidden
Use Edit Aircraft, position to the aircraft, right click and select Show (if the Show option is disabled, the aircraft is already visible).
Missing or incorrect configuration file
For example, if in the aircraft configuration file (AIRCRAFT.CFG) the "texture=" points to a folder that doesn't exist, the aircraft will not appear in FS's plane list. See Using Addit! Pro's Edit Aircraft Window to Troubleshoot Problems, below.
You installed a texture/skin/repaint and not a full aircraft
Repaint installs are applied to existing full aircraft and will not operate on their own since they only include artwork and not a real plane. Locate the full aircraft and install it first before the texture addon.
Other aircraft managers causing conflict
Are you using any other aircraft manager programs? They can sometimes create conflicts with Addit! Pro, especially those that attempt to "hide" aircraft and panels in an effort to make Flight Simulator load quicker.
Aircraft was not converted
Make sure the addon was designed for your version of Flight Simulator. Addons designed for some previous versions will not appear in FS's Aircraft list unless they are converted first.
The files were installed to an older version of FS. If the files do not appear in Flight Simulators \Aircraft folder at all, perhaps they wound up in the \Aircraft folder of an earlier version. This could happen if the Windows Registry contains pointers to the old copy of FS.
A filter is blocking it. Clear the Filter Bar, Status Filter Bar and Search Bar by clicking the Clear button on each of them.
Using Addit! Pro's Edit Aircraft Window to Troubleshoot Problems
Check the aircraft's integrity by using Addit! Pro's Edit Aircraft function. Position to the aircraft in question. See if any errors are detected and if so look at the configuration report. Most errors that prevent an aircraft from appearing are identified here.