FLEX takeoff?

[martinlest]

Hi. I have watched the associated video(s) but I am still not clear on this - maybe I am too focussed on later Airbus models, with FLEX throttle detents and THR CLB indications on the PFD (etc!).

In the A300-600, I click on FLX TO in the cockpit and set the temp. Before takeoff, I generally arm 'PROFILE' and 'NAV' and engage AP when I have a steady climb. 

But with AP engaged, the a/c descends to reach its climb speed, and I don't see any indications on the PFD that show I am in FLEX mode. Do I have to manually press 'AUTO' on the thrust panel? 

Would anyonbe kindly list the procedures for FLEX and what I should see in the cockpit. And apart from leaving TOGA set rather than selecting FLEX in the thrust panel, what differences are there in procedure for a TOGA takeoff?

As I say, I have watched the videos but I am missing something.. the a/c should clearly not be descending to reach its climb speed for a start!

Thank you.

[martinlest]

XP11, BTW

[Umi Akai]

After set the FLEX on TMP, up on line up runway, you should catch the TO/GA lever on throttle to trigger the Takeoff mode for AP and AT.

They call A300 the best Boeing Airbus have ever built for reason....

[martinlest]

Hi, and thank you.

So if I have FLEX set up as described, hitting the TOGA button (I have TOGA mapped to my Saitek X52) initiates a FLEX takeoff, rather than switching the engines to TOGA power (at least in the iniBuilds aircraft, as obviously that is what most concerns me)??

Edited November 15, 2024 by martinlest

[martinlest]

Seems to work fine... no issues on takeoff this time round 🙂

[martinlest]

Quote

So if I have FLEX set up as described, hitting the TOGA button (I have TOGA mapped to my Saitek X52) initiates a FLEX takeoff, rather than switching the engines to TOGA power (at least in the iniBuilds aircraft, as obviously that is what most concerns me)??

Still not 100% sure if that is so. Can anyone please confirm? Thanks.

[Jack Dudley]

5 hours ago, martinlest said:

Still not 100% sure if that is so. Can anyone please confirm? Thanks.

Im a bit confused but I can try to help. Are you having issues with a TOGA takeoff? Im a bit confused if you could clarify please.

[martinlest]

Quote

Are you having issues with a TOGA takeoff?

No, it's not that. My question is whether, having set up a FLEX takeoff, there's anything more to do once you are rolling down the runway: It seems that pressing TOGA button (as I do) sets the N1% to the selected FLEX setting.

Or am I wrong, does pressing TOGA cancel FLEX and initiate TOGA power settings? Of course with other Airbus types, you simply move the thrust levers to the required gate, but not in the a300.

(I may be overthinking this!! As I say, N1 looks right).

Oh, one other thing: when I select the FLEX TO temp, the 'target' is sometimes shown as the N1%, other times the EPR%. How come the difference?  Must be something I do differently (?), but I can't fathom what.

Edited Sunday at 11:30 AM by martinlest