The A310 MCP has a speed intervention feature, whereas the A300 appears to not have this.

Whilst I cannot recall my differences training between the A300 & 310 in XP (too long ago!), I believed that the A300-600R featured the avionics and systems of the A310 with all improvements and updates.

Is there a way to speed intervene whilst in Profile mode?

Thank-you.

 

Yes and no.  When you intervene with the speed though other changes occur too.  From the FCOM

3 SPD/MACH SELECTOR KNOB
TURN Sets the speed/Mach target value.
PUSH Allows a speed or Mach to be preset. The PRE SET
light illuminates. (Second push deactivates pre-set
function, and the PRE SET light goes off.)
PULL (while PROFILE mode is engaged) Causes a

manual reversion to selected modes:
– If in level flight, PROFILE mode disengages and
SPD mode (A/THR) and ALT mode (AP/FD)
engage.
– If in climb or descent, PROFILE mode
disengages and LVL/CH engages.
In both cases, the speed/Mach window
synchronizes on the present aircraft speed/Mach.

Thank you, that’s greatly appreciated, I will check it out on my next flight. 

You can also always go into TACT mode to change speed but have FMC (PROF) still manage the altitude profile.

Yes, thanks, I knew that one, but still a good reminder. 

In PROFILE mode is it shown somewhere what expected (indicated airspeed en vertical speed) speeds are?

Or are they by definition the speeds depicted with flightlevel in the flightplan pages.

And then: why  cant I manually change the restriced speeds/altitude?

Quote

Vertical revisions to the  flightplan can be made at any point along the
route of flight

Quote

 

It says in the A310 FMS Pilot's Guide. Or is it only possible in a A310 and not A300?

TACT mode is a temporary selection which remains active until the next phase of flight.

PROFILE follows the cues as shown in the MCDU.

PROFILE mode ALT & IAS/M can be changed by selecting the RLSK and entering new values (A300 & A310).