It has been seen before that easyjet a discount airline has repaired an airplane with duct tape. The company stated, that it was purely for cosmetical reasons. On November 28th this happened again, in a flight from Amsterdam to Berlin. The pilot announced a short delay for a minimal technical fix. Then a technican came and removed an already sticked duct tape from the engine. Cleaned the Engine with alcohol and then used again duct tape to stick 2 elements of the engine together. Whilst the flight the duct tape got slightly lose and rolled backwards due to the speed. The pilot checked the fix, via switching on the lights, while the machine was in the air. Disembarking the plane. The turbine that still was moving due to strong winds made a ticking noise. Refering back to the old statement, it really seems that the tape was there for mechanical reasons and not just for the looks. Also it seemed that the flight did not take place in full hight.