B737 Next Generation Undifferentiated
Flight Crew Air Transport Pilot (ATP)
Confusion; Human-Machine Interface
Aircraft Equipment Problem Less Severe
General None Reported / Taken
Aircraft; Human Factors
I have flown the MAX aircraft for four legs on two separate occasions. The first time I flew it we landed and taxied clear at Bravo and I went to call Ground. I had gotten used to looking for the flight number in its new location; digitally displayed on the dash. I keyed the MIC and looked for the call sign; only to see that it had disappeared. While this only caused a temporary distraction; at busy airports it's not ideal. Since the flight number disappearing on landing doesn't make any sense at all; I figured it was an anomaly to that particular aircraft. However; I noticed the same occurrence on all four legs that I've flown MAX aircraft (2 different aircraft). The last time this happened was [a flight the day prior]. From best I can tell; the disappearance of the flight number is linked to either weight on wheels or airspeed. For example; when the airspeed drops below a certain value; the flight number disappears. Nonetheless; this is very distracting and occurs at absolutely the worst possible time as things get very busy for a First Officer (FO) as we exit the active runway; call Ground; and get our taxi instructions to the gate. Even more frustrating; is that it makes no sense whatsoever for the call sign to disappear at that time in the flight. It would seem that it should disappear once the aircraft blocks in at the gate. I'm hopeful that this [report] may shed some light on this issue and create an impetus for a software fix to allow the call sign to remain visible until the aircraft blocks in at the gate.Preventative Measures: 'I think this whole issue could be fixed with a simple software change. Please inquire to see what possibility exists to allow the flight number to remain visible until the aircraft blocks in at the gate.'
B737 Max First Officer reported that the flight number disappears from the digital display after the aircraft has landed making it difficult to communicate with ATC from landing to the gate.