We interfere with the EASA in various fields:

OBU4:

Meanwhile the EASA has come up with an own General Change called CS-STAN which we reference here as issue3. Please check for newer releases and further official information by the EASA. We cannot guarantee, that the information on our web site is always up to date. We have designed OBU4 to match Sub change cs106a contained in there. Depending on the aircraft model it might not be possible to connect all original plane sensors like RPM or temperature sensors, if those sensors must fulfil ETSO specifications. However the basic functionality (flight log, tracking, acceleration, space orientation, bus voltage supervision) runs on own internal sensors.

OBU3 (discontinued production)

For OBU3 we archieved an own Minor Change approval for an electrical interface along with a model list which you find here:

10054165CERTREV120150728.pdf

This has priority if the aircraft model is on the list.

Aircraft-Model-List-ENHANCED-Revised.pdf

For different models not included on the list one can include the device like OBU4.