FSLabs A320: Diversion Fuel Calculation

[@KEITHGEE1000]

Fascinitating as always. We are becoming ever more competent thanks to you!

[@Blackbox711]

I am glad you are enjoying the content 👍🏼

[@davidf.5633]

Thx so much for another essential and really good and understandable training video.

[@Blackbox711]

Thank you very much David

[@rcflyer6241]

Excellent content! I’m really enjoying learning about the A320. Please keep them coming. You deserve 100k+ followers. I love all of your vids...thank you!

[@Blackbox711]

Very kind of you to say so. I am happy that I already have so many viewers and followers who enjoy my content. Even though it is sometimes a little dry due to the theory involved.

[@IvanMelon]

Glad to have the chance to come here once again to say Thank You. I really appreciate your continued support to the flight sim community. Happy and safe landings, Cpt.

[@Blackbox711]

Very kind of you to say so. Thank you very much!

[@ThomasDanielsen1000]

Great video as always, BB. Very clearly explained. Looking forward to the next one!

[@Blackbox711]

Thank you Thomas

[@g7usl]

We are all so very lucky we have you amongst us Blacky. Your input has transformed our hobby. Dave T. BB712. lol

[@g7usl]

Another great video. Blacky your the tops!

[@Blackbox711]

Thank you 😊

[@Blackbox711]

Thank you 😊

[@tolgair28]

Perfectly explained and excellent content - Vielen Dank dafür!

[@Blackbox711]

Vielen Dank 🙏

[@davey6693]

"Since I absolutely buttered this landing, it's definitely going in the video :)" Great video and very informative. Thanks BB.

[@Blackbox711]

LOL, correct Dave. Thank you

[@almorkans3171]

Another informative and engaging video. Looking forward to the next one...

[@MikeGoe01]

Aircraft about to land with less than final reserve fuel. Pilot remembers video from Blackbox711 and the his words “Do not land below final reserve fuel.” Pilot initiates go-around 😎

[@rene1821]

Thank you! very instructive video as always.

[@vakhanvardanian4657]

Thank you very much for this video Blackbox! Very well explained!

[@Blackbox711]

Thank you very much. I was a little worried about publishing this video because it does contain a lot of dry theory.

[@vakhanvardanian4657]

@@Blackbox711 Well, there are topics, that require enough theory basis to be able to demonstrate their application in real life. This is definitely one of them)

[@ArturAraripe]

Excellent content as always! Thank you!

[@Blackbox711]

Thank you very much

[@cleonlusbo231]

Thank you so much man, I have a request if you are choosing airports randomly for tutorials please try Delhi vidp or Mumbai vabb if feasible.

[@Blackbox711]

Thank you Cleon. If there is a good scenery available for those airports I will do so.

[@soheiltahmasbi9647]

excellent video

[@stonemdrmdr8315]

Excellent review….thank you

[@Blackbox711]

Thank you for watching

[@PradeepaAriyadasa]

thanks for the lovely respond with this video. Appreciate it.. Once again bravo for a awesome detailed video tutorial... :)

[@Blackbox711]

Thank you. The next video will be about the execution of a diversion. It is already rendered and will be published soon.

[@PradeepaAriyadasa]

@@Blackbox711 thanks.. appreciate the effort you put here☺

[@g7usl]

Can you tell me what software you use to record your amazing video's please?

[@Blackbox711]

Recording via OBS and editing with Adobe Premiere Pro

[@ehsan83]

So after touchdown if the aircraft used its alternate fuel will use it’s final reserve fuel to taxi? Is it why it’s so important to land with final reserve fuel left?

[@tomstravels520]

If you had a fuel leak would those figures automatically update? Wondering how the Air Transat flight failed to notice their EFOB at destination would be dropping if that was the case. Or what would happen if you accidentally inserted the wrong amount of fuel? Does it automatically cross check and warn you if it isn’t right?

[@Blackbox711]

The FMS will display a message once the estimated arrival fuel drops below reserve fuel. The crew of the mentioned flight was aware of the fuel issue but thought the fuel indication was faulty if I remember correctly.

[@f16spoon]

Hi Blackbox711, I was wondering... I got in the habit of putting in the FMCs/MCDUs as reserve fuel the sum of: - alternate - contingency - final reserve - extra I put extra in because I am thinking that that is an extra fuel that if all goes well I will not burn into. Sometimes, of course, I get the INSUFFICIENT FUEL warning as the FMS computes that I'll arrive 200 to 500 lbs bellow this "huge" reserve (weather, longer taxi, etc. etc.). But it makes me wonder if that is a good practice to have a "soft warning" to know when you'll burn more than expected and should watch your fuel burning habits? Then, when all is understood and further calculation still keep you above final res+alt you can change the value in the FMC/MCDU to final res+alt+cont. Next time the INS FUEL comes on, you'll know you'll be burning contingency, and so on, and so on. As I said, it is rarely even to get the "burning into extra" warning in the first place. But just as good habits go...what do you think? (virtual flying only, of course)

[@Blackbox711]

Hi Adrian. I don’t think that is a good idea. The FMS has a separate indication for Extra Fuel. Therefore you can easily compare the flightplan values to the value in the MCDU. What you are doing is what we in the professional world call “personal non standard procedure”. Check-Captains will give you an earful when doing that ;-)

[@f16spoon]

Thank you for your answer, @@Blackbox711!

[@stonemdrmdr8315]

Great stuff …..

[@Swissdani]

Thank you for this insight. 2 questions from my side. Reserve fuel must be in the tank at touchdown right? If you drop below during the taxi to gate later it‘s „fine“? If diverting and expecting a landing with minium reserve, would you consider an autoland, since GA is not really an option?

[@Blackbox711]

Yes, touchdown is the line. Well an automatic landing means the airport has to set the airport systems accordingly so that the ILS signals aren’t distorted. That might cause more delays for the Approach.

[@Swissdani]

Blackbox711 that makes sense. But the pressure must he very high during that alternate approach since GA is not really an option.

[@Blackbox711]

The pressure is high of course. The fuel would be enough in case of a go-around for one more Approach. But it would be under emergency and a shorter than usual approach.

[@hubermarcelo4273]

Amazing tutorial!! 👌

[@Blackbox711]

Thank you very much!

[@turgutketen6897]

it s really helpful during lifus

[@Blackbox711]

All the best and happy landings

[@reiramessi]

Amazing...

[@frz3505]

Can we just use extra time in the FUEL PRED page to estimate our holding time instead?

[@Blackbox711]

Unfortunately that displayed time is very unreliable. To have a more accurate value Pilots are required to work out the value as explained

[@frz3505]

@@Blackbox711 thank you

[@clementrono1478]

I'd buy you an A320 then you use it to teach us on a real life scale. But am not yet to Bill Gates level. When I get there,be sure to have one from me😂💪. Probably a Neo

[@Avantime]

FYI Airlines in Australia routinely dispatch with NO destination alternate, and there were the occasional close call when the weather unexpectedly changes. (Google "Mildura fuel incident")

[@Blackbox711]

Yes, sometimes there is no alternate airport rachable since the destination is remote. Special procedures exist for that and the risk is like you described.

[@Avantime]

Indeed, for widebody aircraft the alternate for Perth (YPPH) is RAAF Learmouth, 590nm (1100km) away.

[@miniena7774]

First! 😃