After using AP++ for a while along with FMC, I have been facing issues with the altitude setting in AP++. When I slew over to 30,000feet anywhere in GeoFS and then set AP++ to hold altitude at 30, 000 feet, the AP++ system will immediately send me into uncontrolled ascent/descent and disengages. Even when I try to control it manually, it is very difficult to control. While I understand that this may occur due to going above aircraft parameters, I tried it again but within parameters. The aircraft is an A380.
After using AP++ for a while along with FMC, I have been facing issues with the altitude setting in AP++. When I slew over to 30,000feet anywhere in GeoFS and then set AP++ to hold altitude at 30, 000 feet, the AP++ system will immediately send me into uncontrolled ascent/descent and disengages. Even when I try to control it manually, it is very difficult to control. While I understand that this may occur due to going above aircraft parameters, I tried it again but within parameters. The aircraft is an A380.