I noticed another small bug with the new F-18C model. When missiles are loaded on the wingtips, they do not follow the wings when folded but remain hovering in mid-air.
F18 missiles
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divadlav -
January 5, 2026 at 4:29 AM -
Thread is Resolved
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I noticed another small bug with the new F-18C model. When missiles are loaded on the wingtips, they do not follow the wings when folded but remain hovering in mid-air.
I know the F18 quite well because I have already programmed several addons for this aircraft. Hence my question, whether the error you reported occurs with the original F18 from the FS 4 or with third-party addons?
Troubleshooting itself is relatively easy because it was forgotten to include the movement of the wings.
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The bug appears with the newest F18 in FS4 but with an edited option.tmc file as shown here as an example:
<[file][][]
<[object][][]
<[string8][Description][Red Devils]>
<[string8][Type][repaint]>
<[string8][Tags][ decals ]>
<[string8][Requirements][ antenna_installed load_center_tank load_tip_sidewinder load_fuselage_aim ]>
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In my current FS 4 variant in the FS 4 directory in the folder "red_devils" in the file "option.tmc" the line <[string8][Requirements][ antenna_installed load_center_tank load_tip_sidewinder load_fuselage_aim ]> is missing. Did you add this line to the original FS 4 directory or do you have a copy of the folder "red_devils" in your user directory, e.g. as "red_devils2"? I ask this because changes in the original files of the FS 4 should be omitted.
If you have a copy "red_devils2" of the folder "red_devils" and a copy "load_tip_sidewinder2" of the folder "load_tip_sidewinder" in your user directory under '... /Application Support/Aerofly FS 4/aircraft/f18', the solution is very simple:
Add these lines in the folder "load_tip_sidewinder2" in the "system.tmd":
- <[string8][InputTransform][LeftWingFoldRotation.Output]>
- <[string8][InputTransform][RightWingFoldRotation.Output]>
The "GraphicObjects" section should then look like this:Code
Display More<[pointer_list_tmgraphics][GraphicObjects][] <[rigidbodygraphics][LeftSidewinder][] <[uint32][PositionID][LeftSidewinder.R]> <[uint32][OrientationID][LeftSidewinder.Q]> <[string8][GeometryList][ SidewinderLeft ]> <[string8][InputTransform][LeftWingFoldRotation.Output]> > <[rigidbodygraphics][RightSidewinder][] <[uint32][PositionID][RightSidewinder.R]> <[uint32][OrientationID][RightSidewinder.Q]> <[string8][GeometryList][ SidewinderRight ]> <[string8][InputTransform][RightWingFoldRotation.Output]> > > -
Post by divadlav (
January 10, 2026 at 5:21 PM ).This post was deleted by the author themselves (January 10, 2026 at 5:21 PM ). -
I added the line in the original FS 4 directory. Thanks for the input.
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In my current FS 4 variant in the FS 4 directory in the folder "red_devils" in the file "option.tmc" the line <[string8][Requirements][ antenna_installed load_center_tank load_tip_sidewinder load_fuselage_aim ]> is missing. Did you add this line to the original FS 4 directory or do you have a copy of the folder "red_devils" in your user directory, e.g. as "red_devils2"? I ask this because changes in the original files of the FS 4 should be omitted.
If you have a copy "red_devils2" of the folder "red_devils" and a copy "load_tip_sidewinder2" of the folder "load_tip_sidewinder" in your user directory under '... /Application Support/Aerofly FS 4/aircraft/f18', the solution is very simple:
Add these lines in the folder "load_tip_sidewinder2" in the "system.tmd":
- <[string8][InputTransform][LeftWingFoldRotation.Output]>
- <[string8][InputTransform][RightWingFoldRotation.Output]>
The "GraphicObjects" section should then look like this:Code
Display More<[pointer_list_tmgraphics][GraphicObjects][] <[rigidbodygraphics][LeftSidewinder][] <[uint32][PositionID][LeftSidewinder.R]> <[uint32][OrientationID][LeftSidewinder.Q]> <[string8][GeometryList][ SidewinderLeft ]> <[string8][InputTransform][LeftWingFoldRotation.Output]> > <[rigidbodygraphics][RightSidewinder][] <[uint32][PositionID][RightSidewinder.R]> <[uint32][OrientationID][RightSidewinder.Q]> <[string8][GeometryList][ SidewinderRight ]> <[string8][InputTransform][RightWingFoldRotation.Output]> > >Hi Michael,
The changelog looks correct, however, something is still causing it to fail?
Unlike Matt's previous version, Options Pack 1 Loadout 1 - 9
See the comparison of the two images.Any help would be greatly appreciated, thanks.
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Hi Pascal,
I assume that IPACS will revise a lot on the F18 over time.
As a transitional solution, I have created a small addon with which the external loads 4x missiles (positions stores 1, 4, 6 and 9) and 5x pylons and tanks (positions stores 2, 3, 5, 7 and
as well as the search light, the comantennas and the uppergps on all F18 variants can be displayed. "Optical" means that it is exclusively about visibility and there are no mass-simultions.
The trick is that the elements are hidden in the fuselage of the F18 when invisible. I had to ponder a little that pushing into the hull also works when the wings are folded.

Instructions for operation are described in the __README.txt. The basic principle is that there are virtual click spots in the views CameraCockpitOutside and CameraGearView through which the visibility can be set. In CameraCockpitOutside, all elements can be shown/hidden, with the right side being switched parallel to the left side. In CameraGearView, the right lower wing positions can also be clicked individually.
The approximate positions of the click points are:
IMPORTANT NOTES FOR ALL USERS:
THIS ADDON
- REQUIRES THE F18 IN THE AEROFLY FS 4 VERSION 4.08.01.01 (20251212),
- SHOULD ONLY BE SAVED IN THE USER DIRECTORY AS DESCRIBED ABOVE AND
- MUST BE DELETED IN CASE OF ERRORS OF FUTURE UPDATES. -
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... I tried several different methods by modifying certain names in the tmd.system file, but to no avail; I finally gave up.
...Hi Pascal,
Which name did you try?

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For example:
<[string8][InputTransform][LeftWingFoldRotation.Outputfix]>
<[string8][InputTransform][RightWingFoldRotation.Outputfix]>
or
<[string8][InputTransform][LeftWingFoldRotation.loadfix]>
<[string8][InputTransform][RightWingFoldRotation.loadfix]>Any sort of word that came to mind to fix these damned AIM-9 Sidewinders

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