Hi all.
This evening I tried a flight from EDDF to LIMC with A300-600F (PW DHL).
Started with cold and dark, checked the maintenace page with all parameters ok (hyd fluids are above 90%).

Imported flighplan from Simbrief, configured FMC (route and WB), start APU, pushback.
Started engines without problem, but HYD YELLOW remain in lo press (no brakes available, and cannot activate both switches of pitch trim and yaw dumper).

So I stop the engines, did maintenace (refill HYD fluids) and restart the engines again. Same situation.

Maybe a bug?
I saw that it's was an old BUG of the earlier version of the plane for MSFS2020.

Hi @Diegoamd

Are you having this issue consistently on every flight? If so, please try to clear your A300 Premium WASM folder:

Thanks!

i had the exact same issue with passenger GE version today. I ll try another flight

Had the exact same problem yesterday and this evening.

It is not consistent, I made a couple of flights in between.

A300 freighter PW engines.

+1 same issue here...it is annoying and also has been reported by several people back in the year 2022 with the 2020 version. 

+1 same issue today..... Passenger Version with GE engines.  No chance to mitigate, have to stop the flight and restart from the main menu

I encountered this same issue tonight. GE freighter version. 

Oh, and this is wonderful as well: when this issue pops up, the autopilot is INOP, i.e., the plane wouldn't be able to be dispatched in reality. 

Wow, just wow.