cannot re-engage PROF
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Doing the tutorial flight but changed my planned cruising level from F310 to F350, AFCS switched to LVLCH, but now I cannot get PROF to engage anymore. Occasionally I get a ding-dong and an amber AFCS warning on the MFDU for less then a second. Normal?
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Could I kindly ask you to raise a support ticket for this with Just Flight Support at the following link: https://www.justflight.com/support
The F70 & F100 Professional are complex products, so in order to give our support team the best chance at offering speedy assistance, could you please include any screenshots/videos of the behaviour with your ticket, as well as attaching the log file?
Instructions for locating the log file can be found here: https://support.justflight.com/en/support/solutions/articles/17000152594-where-to-find-the-log-file-s-
Mark - Just Flight
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I wanted to share my experience and see if anyone else is facing a similar issue and I saw this topic. I've encountered this problem twice now, after using FLCH, I can no longer re-engage PROF mode, contrary to what the manual indicates. I checked the constraints, and everything appears to be normal. As mentioned above, I too occasionally receive a ding-dong alert along with an amber AFCS warning.
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Try to check FMS page for opt and max cruise alt. The ding dong ist likely that you set a cruise alt above the value wich FMS says is max. I had no problems so far with steps climbs and re engage prof mode if used cruise alt isnt greater as FMS indicated max Cruise LVL.
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I checked the Flight Management System (FMS), and my altitude is not above the maximum limit, yet I am experiencing the same issue. Typically, these problems occur due to incorrect flying techniques, so I may be doing something wrong. In all instances, I was cleared for the initial climb to a specified altitude, which I entered into the box and armed by pulling the knob. The aircraft then entered Flight Level Change (FLCH) mode, and after that, it wouldn’t return to profile mode.
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It appears that the aircraft is not calculating the "Top of Climb" (end of the climb phase), meaning there is no vertical flight profile available. Without a vertical profile, the PROF mode cannot be used. One reason for this could be a missing weight entry. Make sure to enter the fuel weight and ZFW on the "INIT B" page before engine start.
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Fuel, weights, CofG and PERF entries can be input directly into the MCDU by the EFB, unless pilots choose instead to manually enter these, which is fine.
I keep seeing similar issues with FLC vs. PRF whereby PRF absolutely refuses to engage.
I usually climb out initially on FLC until constraints and/or busy airspace are out of the way after which I try selecting PRF mode, except it won’t engage. -
I appear to have the same issue.
I noticed a warning about a wrong cruise FL (FMC shows 350 max, I've set 300 for CRZ) shortly after takeoff.
When I click around on the autopilot panel, I get a lot AFCAS TARGET warnings on the ECAM display, which disappear and re-appear after a split second.
