The last five flights I've done, in five seperate aircraft, each with different confgurations, have lead to a failure of all autoflight systems shortly afte takeoff, causing the aircraft to go into an uncommanded dive at full power, twice being unrecoverable, because I was still at low altitude. Is there a fix?? No matter what I do with failures, the autoflight is the only thing that fails, and its done it the last five flights.

Maybe it will keep doing it until you learn your lesson! just joking though, sounds like a bummer. Have you checked in the PMDG setup for failures that you have not got Autoflight failures set to always on at 100% probability?? You can turn each system on or off with different probabilities or, have a universal all failures random which is the one I use. BTW I haven't been getting enough failures on mine. Trying to up the settings a bit.

Are you sure these are actual failures? No chance of an improper setup or user input overriding the ap?Even if you're not consciously providing input, is it possible your yoke is giving a signal spike?

twice being unrecoverable, because I was still at low altitude

I belive the emergency checklist in the capter about total autopilot malfunction only has one line: the autopilot is broken and from now on PF will fly the plane! At wich altitude does the autopilot malfunction?

I belive the emergency checklist in the capter about total autopilot malfunction only has one line: the autopilot is broken and from now on PF will fly the plane! At wich altitude does the autopilot malfunction?

An average of about 2,000ASL. And yes, it is a real failure, because it says so on the CDU.

because it says so on the CDU

Well look at it from the bright side, the CDU isn't the autopilot/autoflight! The CDU is only a FMS failure It sounds like a problem in the flightplan or setup of the FMS The only thing in the autopilot that has anything to do with the FMS is (A/T), VNAV and LNAV. The other functions is independant and isolated to the autoflight system which will work with a dead FMS/CDU! Do you get the autopilot disengage alarm horn and the red warning light?

I think he means it says so in the failures section of the FMC. As in the PMDG failures section, where you can see what failures have been simulated. And setup a failure either randomly or prescribed. Obviously this is not a feature in the real aircraft..

Yo uare correct, bluepilot. Now any help please?

What I would do.. Reset aircraft to default settings. If it still happens. Fly it manually (or use a different A/P mode) Email customer support Wait for fix.