Which Flap Setting to use for Takeoff - And why OPT is *NOT* always OPTIMUM!

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Which Flap Setting to use for Takeoff - And why OPT is NOT always OPTIMUM! | Real Airline Pilot

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A330 Driver

Күн бұрын

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@criancaanonima 5 ай бұрын

I'm an A320 pilot working for EasyJet, and our standard flaps setting for the A319 and A320 is 1+F. However, in the A321 is flaps 2, due to the reason you've mentioned: tail clearance

@iaexo 5 ай бұрын

Interesting because I was of the belief that the perf calculator in the Fenix was based on EZY's data. They say they optimise for TOPL or something like that

@Ripply 5 ай бұрын

@@iaexo It's pretty accurate. On easyJet's Flysmart iPad software the 'default' is 1+F for the A319/20 and 2 for the 321. OPT is selectable but not default.

@criancaanonima 5 ай бұрын

@@Ripply exactly

@codyl1992 3 ай бұрын

That’s interesting because at my operator we very often see 1+F for the 321 with a long enough runway.

@criancaanonima 3 ай бұрын

@@codyl1992 well, I don't about that, but sure is flaps 2 as a standard for the A321 at EasyJet

@mamo-gaming 5 ай бұрын

i like these short, snappy videos on a specific topic! more of these please!

@lmb5529bml 5 ай бұрын

I'm not a pilot in real life but got some really interesting insights on the Boeing side of things. I'm Brazilian and my favorite route to fly is the SBSP-SBRJ SBRJ-SBSP air bridge. For a long time I've flown the route with Gol 737-700 and -800 from PMDG, and always used the calculations the fmc and now the tablet recommended me, which was always flaps 5 or 10 for takeoff at SBRJ with the maximum load permitted on the -800 (177 pax and 500kg cargo more or less). But then I came across a KZbin channel from a previous Gol pilot who shared real documents from GOL ops and realized they dont use performance calculator at all! They have a table on a PDF document with weights, winds and other parameters and you get your V1, VR and V2 values from there. One thing that was a bit of a shock for me being a sim pilot is that with the -800 GOL almost always uses flaps 25 coming out of SBRJ, completely different from what the performance calculator shows. Anyways that's a bit of GOL ops trivia for you. And if you want some GOL documents to maybe record a flight here in Brazil I can provide you. Cheers!

@PluckyUnderdog 5 ай бұрын

Mostly use 1+F here. 2 if fully loaded, shorter runway, bad conditions etc. Never use 3 for takeoff, personally.

@calinho_1515 5 ай бұрын

gol uses flaps 25 at SBRJ because all 738 of their fleet are SFP short field performance, SFP 738 at flaps 25 have the same slat config of flap 15. Almost all SBRJ 738 SFP takeoff uses flap 25 with 27K rating full toga

@A330Driver 5 ай бұрын

Probably an airline thing that they defined they always want flaps 25 for takeoff there. Flaps 25 provides the shortest takeoff run while providing less climb performance. Since they can simply turn out over the water that's a valid strategy there. Those tables were used in the days before EFBs became common. An airlines performance department would create those tables and pilots would just go into them with weather and weight data. When EFBs became more commong those tables were quickly replaced though. I'm a bit surprised to hear GOL apparently still uses them. Really no idea why they would, takeoff performance calculators on EFBs are standard around the world these days.

@vini_nascimento 5 ай бұрын

@@A330Driver GOL doesn't use the custom tables anymore, now all performance calculations are made on EFB. This has changed a few years ago.

@xavisanchez6958 5 ай бұрын

It would be so nice of Fenix showing in the performance page on the efb the ASDR and the TODR so all this explanation had a so much better visual reeference

@A330Driver 5 ай бұрын

It certainly would!

@gfusion 5 ай бұрын

Great point out. They deffo changed the Performance calculator priorities in block 2. In the old version was not uncommon to get speeds up in the 150s and FLEX 68 nearly on every flight where length allowed. Using the same airports on the this version you'll never get those speeds or as high FLEX even at identical weights and weather. Interesting stuff! Ive seen alot of SAS IAE 320s even using FLEX 70 sometimes. I remember Toliss going through a similar change a few years ago as many people complained the V speeds were unrealistically "too high" but they were just using a different priority in their takeoff calculator. Was a really good read about the choice between some of the speeds the calculator was using and whether it was being go minded or stop minded aswell as some other useful info.

@NanookOblivion 5 ай бұрын

Very nice and interesting video! Great content in it, i never knew flap configs impacted tail strike risks so much. Thanks for the info.

@hendrikp1887 5 ай бұрын

Dear Emanuel, we love you in english and german......your work is one of the best in this medium for MSFS! Greetings/Viele Grüße

@jvmartinmo 5 ай бұрын

Fully agree

@A330Driver 5 ай бұрын

Vielen Dank!

@tangolima4148 5 ай бұрын

Great "company" usage info. Thank you very much!

@reischracing7078 5 ай бұрын

Capt A320 pointed out that Flap optimum will do anything to avoid TOGA and give you the highest Flex.

@A330Driver 5 ай бұрын

In the real world yes, but doesn't seem like this on the Fenix.

@stefstaf 5 ай бұрын

If you have a chance, please make a video of a take off with config-3 flap setting and how you know when to start "pulling" them in to Flap 2 and Flap 1+F Thank you for your informative videos.

@AlexdAviator 5 ай бұрын

just to answer your question, after takeoff, you will be able to start retracting flaps AFTER you’ve done your thrust reduction. After the reduction, only if you are above F speed, you should bring your flaps all the way to one, skipping flaps 2. then when you reach S speed you can select flaps 0 as usual

@stefstaf 5 ай бұрын

@@AlexdAviatorThank you so much for the answer! This detail I was always missing and experimenting wasn't enough to give me a solid understanding. (I assume in the last sentence you meant "select flaps 0 as usual")?

@AlexdAviator 5 ай бұрын

@@stefstaf yep, my mistake

@A330Driver 5 ай бұрын

Alex is absolutely right, thank you!

@Angel33Demon666 5 ай бұрын

@@AlexdAviatorIf there are speed restrictions on the SID which are too low for flaps 1, do you first set flap 2 or do you leave it at 3 and retract to 1 after the speed restriction is passed?

@leerose9436 5 ай бұрын

Great video ! Nicely explained ! Much appreciated Emanuel 👍🙏🏻❤️👨‍✈️✈️👊

@amphora8321 5 ай бұрын

Thanks for these vids

@alejandromartinezalvarez9584 4 ай бұрын

In less than 10 minutes you summarized the basic Airbus PEP course… In my case if we are not limited by obstacles or anything in the airport brief, we use opt given by Flysmart

@A330Driver 4 ай бұрын

haha, well, it *is* a bit more complex still :D

@Treadstone7 5 ай бұрын

in the previous Fenix build, I flew out of Brussels a few times (never anywhere near MTOM). Everytime I used 25R, the EFB calculated CONF3 for OPT takeoff with 3200m TORA...Don't know what was up with that.

@g_pazzini 5 ай бұрын

You seem quite expert on A320… Is the type rating for A320 the same as A330?

@A330Driver 5 ай бұрын

It's only a five day differences course between the two aircraft in which you primarily deal with handling differences (shorter plane) and some differences in emergency procedures since the A320 has less redundancy than the A330. In general Airbus designed the two fleets to be very, very similar to one another. So similar indeed that in many airlines it is common practice to do multi fleet flying where pilots may fly the A320 on one day and the A330 the next day.

@zoe..d 5 ай бұрын

So, config 2 would be more critical for airstrips that are not so uniform? Some look like the have more hills than Austrias skyline

@A330Driver 5 ай бұрын

Depends, if you've got a *really* bad runway I might probably even consider Config 3 and TOGA to get airborne as quickly as possible.

@tomstravels520 5 ай бұрын

On the ToLiss EFB the V1 calculation is often a min and max and apparently you can use any option between them. Would you able to explain if you get the same and how you decide which number. I usually go for the higher number but round down to the nearest 5 (a little bit extra distance remaining)

@A330Driver 5 ай бұрын

The real Airbus performance calculator would do the same. It's very very rare that you only get a single V1 value. I'll consider it for a future video, thanks!

@NograBot 5 ай бұрын

@@A330DriverPlease do! I'm always not sure how to choose the right V1 speed and always end up just picking somewhere in between the range for a balance between safety and efficiency although I don't think that's how pilots do it IRL

@donstimson6655 5 ай бұрын

The only time there is only a single V1 speed is when you at right at your limiting takeoff weight for that takeoff (including flap setting). The V1 speed determines the "balance" between the takeoff distance (which is based on an engine failure 1 second before V1) and the accelerate-stop distance (the distance needed to reject a takeoff with the first action to stop the airplane taken at V1). Higher V1s shorten the takeoff distance and lengthen the accelerate-stop distance. Lower V1s do the opposite. So, if you want to maximize the safety margin for a potential rejected takeoff, choose the lower V1. If you are concerned about terrain clearance or want to minimize your takeoff distance, choose the higher V1. Of course, if you don't have an engine failure, or a need to reject the takeoff, the V1 speed selection doesn't matter.

@drohnenvideosundshorts9641 5 ай бұрын

Where can I find out what Flap Setting a Airline typically uses?

@Vv-gk4cu 5 ай бұрын

Why do you prefer Config 3 while landing; when (if not mistaken) we should use Config 3 in situations of wind shear turbulent weather?

@tomstravels520 5 ай бұрын

It’s also fine to use flap 3 if the runway is very long as it creates less drag so less thrust and noise generated but higher approach speed

@A330Driver 5 ай бұрын

That'll be a topic for a different video.

@AlexdAviator 5 ай бұрын

flaps 3 allow for a higher Vref, so you can almost “punch” through the bad weather and get out of there as soon as possible. also you have less surface exposed to the airstream so the turbulences and strong winds won’t be able to affect your attitude as much, whereas using flaps full would cause the plane to get thrown around much more

@janosch555 5 ай бұрын

Isn't tail clearance directly proportional to pitch attitude ? Do you pitch up less during rotation in Flaps 2 takeoff then you would in 1+F? Just curious. ;-)

@K-R-O-L 5 ай бұрын

With what runway length and temperature/winds would you recommend using flap 3 for takeoff?

@Angel33Demon666 5 ай бұрын

Does anyone have a good takeoff performance calculator for the FBW A32NX and the Headwind A339X?

@LighsOut 5 ай бұрын

and about landing? 3?full?

@A330Driver 5 ай бұрын

That'll come with a seperate video as it's a whole different topic and would have turned this one far too long.

@macieksoft 5 ай бұрын

IIRC you do FULL whenever possible (to reduce brake and landing gear wear + shorten the landing distance) while 3 is used for engine out landings to reduce drag (with a single engine you have to mind the drag, because you have less thrust to fight it in case of go around).