As soon as I position the plane on the right route, I reactivate the autopilot but it changes its route
The dreaded bug on the 787? Yesterday appeared a bug on the route of the 787, the plane did not follow the indicated route (autopilot activated) could you help me.
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Assim que posiciono o avião na rota certa, reativo o piloto automático mas ele muda de rota
How long after the flight does this happen?
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Aqui está o que aconteceu:
Can you send me your flight plan so I can try to reproduce this bug here on my cell phone? I need more details about this possible bug.
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Aqui está o que aconteceu:
From what I could tell from these screenshots, it probably doesn't have any flight plan drawn up. Without a flight plan, the plane will drift with no direction.
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This flight plan is invalid because you have not selected any departure, arrival and approach procedures and you have not added any waypoints along the route. You have only selected your takeoff and landing runway. Without selecting any departure, arrival and approach procedures, the plane will fly adrift and without any direction. For this reason, your plane does not follow the correct path between the origin and destination airports.
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Acho que esse deve ser o verdadeiro motivo desse problema, obrigado por me ajudar 👍
The problem with your plane flying aimlessly and getting lost on the way was due to the fact that you made mistakes in planning the flight from the departure phase through the arrival and approach. In the navigation menu, no departure, arrival, approach procedure is shown, in addition to not having any waypoints along the trajectory of the aircraft. Without this essential information for the flight, you will easily get lost. So this is not a bug.
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The LNAV (lateral navigation) and VNAV (vertical navigation) that are functions of the aircraft's autopilot need information regarding the departure, arrival and approach procedures to function correctly. In this case, your plane started flying aimlessly because it did not have information for the LNAV to correctly guide the aircraft on its path between the airport of origin and the destination. With the information entered correctly in the FMC, the LNAV function will guide the aircraft to the destination. VNAV, on the other hand, needs information regarding the approach, as this function creates a vertical descent path (glide ramp). The VNAV function will act both in an RNAV and ILS approach.
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It looks like the route on the navigation display connects the two latitude/longitude points directly. This is not correct though, because you want to fly the shortest distance between the two points, which is the great circle not the constant heading angle. The autopilot is doing it correctly but the navigation display in the cockpit does not represent the actual route correctly (same with the flight info). I thought this bug was already fixed a while ago...
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Do you actually need a departure and approach? Normally works okay for me when I don’t put both or either in 🤔