Issue Details
Issue Number
Licence activation does not work

After entering the license key it says that the licence key is not valid - tried and double checked several times.

Issue Type
Identification Date
Monday, 14 March 2022
Project Name
EC 135 V5
Attachment Details
File Name File Type Size Created on Created by
Log.txt text/plain 359980 2022-03-14 11:42:01 This email address is being protected from spambots. You need JavaScript enabled to view it.

Issue Status
Issue Resolution
Resolution Summary

In some rare cases there are problems generating the license key. We're looking for the cause.
Should such a problem arise, please contact us. We will immediately provide a new license key (already done in this case).

rotorsim's partners


Outstanding controls for the EC 135. Pedals, Collective and a true-to-the-original stick, even motor-controlled on request. These controls are a must-have for anyone flying the EC 135 in the simulator.

The hardware for the home cockpit. simparts instruments are of exceptional quality. The complete program for an EC135 cockpit is available. And everything is basically plug & play with our EC 135 Pro.


The German Aerospace Center (DLR) is a renowned research institution. Our flight model is used in a simulator at the Institute for Flight Guidance. DLR pilots supported the development.

The ultimate flight experience in an EC 135 full flight simulator. Fully instrumented, motion platform, sensational projection. In Attikon in Switzerland, beginners as well as flight students and professionals get their money's worth.

Heli Simu France

Together with the French developer group HSF we bring the EC 135 for X-Plane into a new dimension. A highly detailed 3D model of HSF is combined with our unique system depth.

HR SimYard

The Austrian developers build high-quality freeware addons for FSX and PrePar3D. Thanks to our partnership, we mutually benefit from each other by exchanging 3D models for the EC 135.