Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Human-Machine Interface
Aircraft Equipment Problem Less Severe; Flight Deck / Cabin / Aircraft Event Other / Unknown
Aircraft Aircraft Damaged
Aircraft
Since we have taken delivery of more 737 Max aircraft; I have noticed that aircraft are coming with the aircraft headset attached to the sidewall of the aircraft.  The method this is accomplished; wires the headset wires into position near the headset jacks in such a manner that they cannot be removed.  The problem starts when pilots open the window; to talk with ground crew; ventilation; wing inspection; etc.  At this point; the wire becomes tangled; and stuck in the window mechanism.  The result is that the window is not completely closed; or that the headset cord is damaged; requiring replacement.  In addition to the costly factors above; if a crew were required to egress through the window; its possible the additional tanglements from the wire might prevent the window from opening completely.In the past month; I have personally observed two maintenance write-ups where damage occurred to the headset wire. One was on the FO (First Officer) side; one on the Captains side.  An additional write up involved a return to field; because the window wasn't properly closed despite the window handle being over center.There is no requirement to wire into position the headset (most of which are unused by pilots anyway).  Many other airlines fleet do not have the headset wired into position in this manner.
B737 MAX First Officer reported design of the crew headset wiring results in the wire getting tangled and stuck in window mechanism.