6 hours ago, ScotFlieger said:

Hi Jan

I had a thought overnight. Please check that you do not have the Flaps_dec/_inc commands set to the Warthog buttons in FSUIPC. Also email me a copy of your fsuipc4.ini file. 

That have already come to my mind. And actually I did have such settings in FSUIPC and also in the FSX control settings. So I removed them and to my surprise the problem did not go away.

17 hours ago, jfri said:

That have already come to my mind. And actually I did have such settings in FSUIPC and also in the FSX control settings. So I removed them and to my surprise the problem did not go away.

Thank you for the latest test files. The fsuipc4.log shows that something else is generating the extra flaps commands before LINDA is acting on the same button press. The fsuipc4.ini shows that you previously used FSUIPC for a number of functions including flaps.

To eliminate FSUIPC as the source, can you rename fsuipc4.ini to something like fsuipc4old.ini. Starting FSX again will recreate a new version of this configuration file without any additions. Then rerun the previous tests.

6 hours ago, ScotFlieger said:

Thank you for the latest test files. The fsuipc4.log shows that something else is generating the extra flaps commands before LINDA is acting on the same button press. The fsuipc4.ini shows that you previously used FSUIPC for a number of functions including flaps.

To eliminate FSUIPC as the source, can you rename fsuipc4.ini to something like fsuipc4old.ini. Starting FSX again will recreate a new version of this configuration file without any additions. Then rerun the previous tests.

Did so and now the flaps did work as intended. But an inconvenience was that I had reassign my axis again

Sorry for the inconvenience but at least we have solved you problem.