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A320 Descent Energy Management
Netherlands
เข้าร่วมเมื่อ 21 พ.ย. 2021
Transition Altitude - Advanced Transition Procedures
In this presentation, I explain how to handle non-standard transition procedures.
The A320 Descent Energy Management book is available here:
www.amazon.com/Practical-Descent-Energy-Management-A319/dp/B09M5B12XF/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1637766049&sr=8-1
The generic jet version of the Descent Energy book (Jet Aircraft Descent Management) is available here:
www.amazon.com/dp/B0CJRH8YF6/ref=sr_1_3?qid=1695638653&refinements=p_27%3ATjeerd+Schouten&s=books&sr=1-3&text=Tjeerd+Schouten
The Radio Telephony book is available here:
www.amazon.com/Practical-Airline-Telephony-Tjeerd-Schouten-ebook/dp/B0BCFHV55D/ref=sr_1_1?crid=RVL2QF5YEYVN
The A320 Descent Energy Management book is available here:
www.amazon.com/Practical-Descent-Energy-Management-A319/dp/B09M5B12XF/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1637766049&sr=8-1
The generic jet version of the Descent Energy book (Jet Aircraft Descent Management) is available here:
www.amazon.com/dp/B0CJRH8YF6/ref=sr_1_3?qid=1695638653&refinements=p_27%3ATjeerd+Schouten&s=books&sr=1-3&text=Tjeerd+Schouten
The Radio Telephony book is available here:
www.amazon.com/Practical-Airline-Telephony-Tjeerd-Schouten-ebook/dp/B0BCFHV55D/ref=sr_1_1?crid=RVL2QF5YEYVN
มุมมอง: 2 734
วีดีโอ
Raw Data ILS Presentation
มุมมอง 27K2 ปีที่แล้ว
In this presentation, I explain how to fly a Raw Data ILS. First I discuss some theories, then I dissect an actual Raw Data ILS flown in an A320 and a Raw Data ILS flow on a PC flight simulator (X-Plane 12 - ToLiss A321). Full real A320 Raw Data ILS video: th-cam.com/video/PgmffR_8wio/w-d-xo.html Full X-Plane Raw Data ILS video: th-cam.com/video/K-f8hh0WmcM/w-d-xo.html The A320 Descent Energy M...
Raw Data ILS - ToLiss A321 - X-Plane 12
มุมมอง 2.9K2 ปีที่แล้ว
Raw data ILS flown using X-Plane 12 and the ToLiss A321. Light turbulence and thermals are present. Using a PC-based sim is a great way to keep up your flying skills. A real raw data ILS being flown can be viewed here (different airport): th-cam.com/video/PgmffR_8wio/w-d-xo.html Raw Data ILS presentation with video breakdown: th-cam.com/video/QydWeW81Bxc/w-d-xo.html The A320 Descent Energy Mana...
A320 Raw Data ILS
มุมมอง 6K2 ปีที่แล้ว
Raw Data ILS flown into VVPQ. Raw Data ILS presentation with video breakdown: th-cam.com/video/QydWeW81Bxc/w-d-xo.html The A320 Descent Energy Management book is available here: www.amazon.com/Practical-Descent-Energy-Management-A319/dp/B09M5B12XF/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1637766049&sr=8-1 The generic jet version of the Descent Energy book (Jet Aircraft Descent Management) is ava...
Practical Airline Radio Telephony
มุมมอง 1.1K2 ปีที่แล้ว
My new book "Practical Airline Radio Telephony" is now available: www.amazon.com/Practical-Airline-Telephony-Tjeerd-Schouten-ebook/dp/B0BCFHV55D/ref=sr_1_1?crid=RVL2QF5YEYVN The A320 Descent Energy Management book is available here: www.amazon.com/Practical-Descent-Energy-Management-A319/dp/B09M5B12XF/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1637766049&sr=8-1 The generic jet version of the Desce...
Descent Management - Calculate Distance
มุมมอง 12K2 ปีที่แล้ว
Using the correct distance for the profile calculation is essential. If the distance you are using is incorrect, your descent management will be incorrect also. In this video, I describe the different methods available to get the correct distance for your profile calculation. The A320 Descent Energy Management book is available here: www.amazon.com/Practical-Descent-Energy-Management-A319/dp/B0...
A320 VOR presentation
มุมมอง 1.8K2 ปีที่แล้ว
This is a presentation about how to fly a VOR approach with the A320. Managed VOR approach video: th-cam.com/video/rNKmK43qghg/w-d-xo.html Selected VOR approach video: th-cam.com/video/Lga28pzMEQQ/w-d-xo.html The A320 Descent Energy Management book is available here: www.amazon.com/Practical-Descent-Energy-Management-A319/dp/B09M5B12XF/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1637766049&sr=8-1 T...
A320 glide slope issue in VVBM
มุมมอง 2.1K2 ปีที่แล้ว
In VVBM RW 09, there is an issue with the glide slope signal fluctuating. The A320 Descent Energy Management book is available here: www.amazon.com/Practical-Descent-Energy-Management-A319/dp/B09M5B12XF/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1637766049&sr=8-1 The generic jet version of the Descent Energy book (Jet Aircraft Descent Management) is available here: www.amazon.com/dp/B0CJRH8YF6/ref...
A320 managed VOR approach
มุมมอง 16K2 ปีที่แล้ว
In this video, I describe how to fly a vertically fully managed VOR approach in the A320. The A320 Descent Energy Management book is available here: www.amazon.com/Practical-Descent-Energy-Management-A319/dp/B09M5B12XF/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1637766049&sr=8-1 The generic jet version of the Descent Energy book (Jet Aircraft Descent Management) is available here: www.amazon.com/d...
A320 approach when heavy
มุมมอง 1.7K2 ปีที่แล้ว
When the aircraft is heavy, there is a risk of Flap 2 overspeed. In this video I explain how to prevent that. The A320 Descent Energy Management book is available here: www.amazon.com/Practical-Descent-Energy-Management-A319/dp/B09M5B12XF/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1637766049&sr=8-1 The generic jet version of the Descent Energy book (Jet Aircraft Descent Management) is available he...
A320 selected VOR approach
มุมมอง 7K2 ปีที่แล้ว
In this video, I describe how to fly a vertically selected VOR approach in the A320. The A320 Descent Energy Management book is available here: www.amazon.com/Practical-Descent-Energy-Management-A319/dp/B09M5B12XF/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1637766049&sr=8-1 The generic jet version of the Descent Energy book (Jet Aircraft Descent Management) is available here: www.amazon.com/dp/B0C...
History behind A320 Descent Management book
มุมมอง 1.3K2 ปีที่แล้ว
In this video, I tell the story about how the book Practical Descent Energy Management came to be. The A320 Descent Energy Management book is available here: www.amazon.com/Practical-Descent-Energy-Management-A319/dp/B09M5B12XF/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1637766049&sr=8-1 The generic jet version of the Descent Energy book (Jet Aircraft Descent Management) is available here: www.ama...
Cadet Line Training Preparation
มุมมอง 2.8K2 ปีที่แล้ว
This presentation is for Cadet pilots about how to prepare for line training. The A320 Descent Energy Management book is available here: www.amazon.com/Practical-Descent-Energy-Management-A319/dp/B09M5B12XF/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1637766049&sr=8-1 The generic jet version of the Descent Energy book (Jet Aircraft Descent Management) is available here: www.amazon.com/dp/B0CJRH8YF6...
A320 Descent Management Presentation
มุมมอง 27K2 ปีที่แล้ว
This is a presentation about Descent Energy Management for the A320. Videos referenced in the presentation: Correct approach: th-cam.com/video/GjBIDVgMoOQ/w-d-xo.html Incorrect approach: th-cam.com/video/NGqMsmzy7l0/w-d-xo.html The A320 Descent Energy Management book is available here: www.amazon.com/Practical-Descent-Energy-Management-A319/dp/B09M5B12XF/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=...
A320 Descent Management - VVDN, too high on energy
มุมมอง 5K2 ปีที่แล้ว
Too high on energy on arrival due to a shortcut. The A320 Descent Energy Management book is available here: www.amazon.com/Practical-Descent-Energy-Management-A319/dp/B09M5B12XF/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1637766049&sr=8-1 The generic jet version of the Descent Energy book (Jet Aircraft Descent Management) is available here: www.amazon.com/dp/B0CJRH8YF6/ref=sr_1_3?qid=1695638653&re...
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In this scenario why isn’t the loc engaging? Is it cause you’re too far out. Secondly slightly off topic but if you are cleared for an ILS and you are 30nm out on the intercept it may be better to manage hdg until you’re within the envelope before arming APPR. Once you arm APPR will NAV BLUE disarm to replace G/S and LOC blue. If so what would happen to the INCPT point on the ND, would it disappear and you’d just be flying in hdg before intercepting loc.
LOC(*) green will only engage when LOC is blue (which happens when you press either the LOC or APPR pushbutton). Also, you have to be close enough to the llz beam, or on a sharp intercept heading. At what time in the video did you expect LOC* to engage? ATC will not give you a vector expecting you to intercept the LLZ outside of the certified range. However, if that is the case somehow, then indeed you can manage HDG to get NAV blue, provided the flight plan is sequenced. Most of the time you can just wait a bit to get in range before arming APPR without having to push HDG though. But if you do push HDG, you will get NAV blue, and it will remove GS blue and LOC blue if that was present. If you press APPR with NAV blue present, then NAV blue will removed and replaced by GS blue and LOC blue. In that case the INCPT point will be removed and the track to intercept will be removed as if it was never there and you were flying in HDG mode and never managed HDG.
Thanks for your answer reg crosswind landing. You have cleared things up for me massively. I just have one query, would there become a point on rollout where you would need into wind rudder to stop drifting downwind? Or does the weathercock overwhelm any sort of pushing of the wind & in turn it's always rudder opposite to the wind.
The weathercock effect is always way stronger than anything else, no matter what the speed. So you only have to correct for that.
With a heavy crosswind from the right you’d need left rudder and right aileron upon touchdown to maintain to be straight. How would that transition upon rollout. Would you still need left rudder to remain straight and stop yawing into wind?😊
First I want to clear up a possible misconception. In a small airplane you apply cross controls so that you fly with one wing down to prevent drift on short final. With airliners we don't do that because it causes engine ground clearance issues and you also don't want to land with one wheel first with heavy aircraft. So no aileron is applied for crosswind landings, except to counter a roll moment if you kick the rudder hard, but aileron applied for that is only momentary, not continuous. I only had to do that a few times during my career, so it's rare. So what about the plane drifting then as you kick the rudder to align the wheels with the runway (that's the reason we kick the rudder)? The answer is that the plane doesn't drift, if you do it properly. How is that possible? Inertia. You should only kick the rudder when the wheels are a few feet above the runway, so just before touch down. If you do it too soon, it will drift. The inertia will prevent drift because there is not enough time for the wind to start blowing the plane off track. This won't work with small light aircraft but it works beautifully with airliners. As for the transition upon rollout, keep the rudder during the derotation, and after touchdown. Also keep the rudder during the rollout. Of course you have to modulate the rudder amount to suit the need. Never release the rudder upon touchdown. That is a common mistake. That's how you end up in the grass due to weathercocking. So yes, in your example you will still need left rudder during the rollout. Also, do not use rudder to fly the aircraft to the centerline in case you are off track just before touchdown because depending the direction of the wind and if you are left/right off centerline, you could kick the rudder the wrong way, making the wheels slide (drift like with a car) even more upon touchdown. Another common mistake. Instead, always use aileron to fly the aircraft to the centerline. Don't worry about engine clearance. It doesn't take much bank angle to make the adjustments needed. Make sure keep the nose upwind, to the side of the centerline a bit (only relevant as you get close to the runway). Because as you kick the rudder, the nose wheel will move to the side. If the cockpit view is at exactly the centerline, you will toch down off centerline after you kick the rudder just before touchdown. Don't be fooled by various visual illusions. You kick the rudder based on the direction of the wind, not based on the visual picture out of the window. From my experience, there are not many pilots who get that.
Hi. Two questions. 1. Assuming in G/S* with the 320 balloon is the aircraft guaranteed to keep G/S* engaged and not potentially lose it due to the subsequent balloon? 2. During line training I found trainers were quite hot on managing speed before selecting f1, and checking there’s a deceleration to F1 (I assume this is to catch a potential error of forgetting to activate appr phase and thus an aircraft acceleration to 250). However, I occasionally see captains on the line keeping 220 selected and then asking for F1 just to reduce VLS and more speedbrake authority. Do you recommend this personally? Or are you of view that if you’re that high on energy at that stage of approach you should just bring the speed further back from 220 so you can get F2 out or potentially gear earlier like in this example.
G/S* is permanent and cannot be lost. There is a difference between line training and flying on the line. During line training they teach you SOPs, techniques, and good habits. Techniques are not SOPs and therefore do not have to be always applied the way you were taught. Also, in an airline there are pilots who initially started at other airlines and subsequently were taught different hings. Even within one airline there is rarely a strict standard between instructors. Instructors also come from different airlines and have different techniques and habits which they teach. Managing the speed before selecting F1 is a good habit for new pilots but not required at all if you are experienced. It has advantages and disadvantages doing so. For example, If you are heavy, it's turbulent, and can't fly a level segment at green dot, it's actually better to select the speed below green dot, then select F1 at green dot, to prevent an overspeed. When high on energy, asking for F1 just to reduce Vls so you can use speed brakes is a valid technique which I also teach. That is better than reducing the speed further and go for F2 early as that can get you above the glide slope if done too late. Also, when drag is not needed anymore, you can easily stow the speed brakes, but you should not retract Flap 2.
Is there much difference in vertical speed with f2 180kts open des between being very light and very heavy?
Not enough to make any meaningful difference over a long enough time. Flaps 2 should not be used for drag because you can't retract it when not needed anymore like with a speedbrake. And while slowing down to 180 kts, you reduce the VS and if you do that too late, you can end up above the glide slope. So if you use F2 with 180 kts in OP DES, it will be for a relatively short time. If you are very light, the descent angle will be steeper, but not enough to make a big difference over a short amount of time.
My last question I promise! When you mention how the closer you are to the airport the more the des profile should match up with your calculations, id this after you’ve subtracted the margin for speed or purely based on distance x 3?
Provided there are no altitude restrictions which put you high or low on profile, your calculation (3 x distance - speed factor) should match up exactly when 50 nm or closer. If you are further than 50 nm it will appear to that you high but as you get closer to 50 nm, it should start to match up more and more.
thanks for your help, & to clarify when you select a lower speed than your actual in open descent, is the “500fpm” an actual figure from the FCOM or just an approximate?
That's not from the FCOM. It's just something that works well from experience. In general, the FCOM is a terrible guide for descent management unfortunately.
I apologise in advance for my stupid comment, but the whole '1500 ft for 5nm' thing, just confirming is that based on 300ft per NM on a standard 3 degree approach. Likewise if I just wanted to eyeball how much height I could lose in 20nm, would I just do 20 x 3 = 6k ft I can potentially lose. I know it is better to work on track miles to run to the threshold and that's what I do, I just like backing it up with a sanity check. Obviously the managed descent profile is slightly shallower (2.5 degrees) so would you just call it a negligible difference? Also in your book you talk about how with distance x 3 it's not accurate further than 50nm away, however a few pages later you say it's more accurate than altitude x 3. Are you comparing it not being accurate to the managed vdev profile or not accurate to alt x 3. I mean it all in a good way just trying to learn :)
1500 ft for 5 nm is indeed 300 ft per nm. But if the approach is more than 3 degrees, the same descent calculation applies though. Once you are on the glide slope in that case, the calculation is different, but before that it's the same. Second point, indeed you can always do distance x3 as a sanity check. A managed descent profile is not any different than a selected profile though. The calculation is the same. Distance x 3 is more accurate compared to altitude x 3. As for the 50 nm, because you will be on a mach number when much further than that, any calculation is unstable and you get inaccurate numbers no matter what. Also, at that diatance you are unlikely to get any shortcuts and if you do, it's easier to just update the FMS track and you will have plenty of time to fix any high profile situation.
A really useful video, thank you so much. Could you also use distance x 3 like this: say you were expecting an approximate 40 mile shortcut from PENT to KREN. If I wanted to be at 4000ft by KREN. Would the correct calculation be 4x3 =12k ft to lose so I know if I want to be at 4k by KREN I need to be no more than 16k ft by PENT. & then once you get that shortcut you can do the total track miles and account for speed in your calculations as you do etc. or would you do it any differently?
That is not what I teach due to added workload and there is no need for that. Instead, only work with the expected track miles (shortcut taken into account). Then do the profile calculation and figure out if you are above or below profile and deal with that accordingly. If there are altitude restrictions which put you high or low, just fly the VDEV and if you get high on the calculated profile, slow down.
Quick question. If you’re flying into an airport and say they’ve cleared you direct to the IAF, 4000ft (min altitude at the IAF) and then cleared you for the ILS. With a platform altitude of 3000ft, are we able to descend down to 3000 after we’ve passed the IAF (next min altitude) or do ATC expect us to intercept the glide at 4000ft.
If you are cleared for the approach, you can follow the altitude constraints and descend according to the STAR and approach procedure.
interesting scenario from me recently, on a base leg 180kts f1… green yoyo = on profile however glideslope giving more than 2 dots below the glide.. what do you recommend to do in this case? F2 out and shallow to get the glide?
When you are on base leg, the glide slope is not valid. The glide slope is only valid if you are two dots on the localizer, some airports only one dot. Also, being on the yoyo does not necessarily mean you are on profile as it is not always correct. The only way to find out if you are on profile is to calculate with distance, altitude, and speed. But let's say that you are indeed below profile. The way to fix that is by adding thrust, not by adding drag or slowing down. Flap 2 gives the same amount of drag as speed brakes. And although slowing down does indeed make the deacent angle shallower, now you are slow causing a delay and piss off ATC. That is why you should just use VS-500 to fix that, but again, it is questionable if you were actually below profile or not. Read my book. It's only 10 usd on Amazon kindle. All this knowledge is all in there.
also sorry to ask again. If you haven’t extended from the FDP. Would you in theory have to manage nav and then wait for to waypoint to become fdp then press APPR? (If for example you were on radar vectors and didn’t extend from the fdp because you were expecting a DIR TO to the waypoint before the fdp for example)
Yes, you are correct.
In your book you talk about when landing at high elevation airports, for configuration you should minus the elevation from your current altitude; and add it just for profile only. If my SOPs specify that flap 2 needs to be taken by 2k tdze… would I not add the airport elevation to 2k? However would I be right in saying I could also do current altitude- 2000 and as long as it’s above 2000 then I haven’t busted the 2k flap 2 rule.
Let's say the airport elevation is 3000 ft. If you need to have Flap 2 selected by 2000 ft above the airfield (which by the way is way too late), indeed you have to add it, so at 5000 ft (from altimeter) you should have Flap 2 selected, latest. Doing current altitude (5000 ft) - 2000 ft will give you 3000 ft, in which case you just landed without proper configuration (airport elevation 3000 ft). This is not the method I teach though because as you can see, it's easy to mix up adding and subtracting. For configuring at above sea level airports, instead you should work exclusively with distance. For example 2000 ft above the airfield equals 6.7 nm to the threshold. That is the same no matter what the airfield elevation is. Use the runway threshold distance from the FMS progress page only for that because the track distance is not correct for some NPA depending the software setup.
Although the headwind decreases your ground speed surely the headwind is not beneficial because it would cause a higher IAS initially anyway?
More headwind does not cause more IAS. But if you mean that a sudden headwind increase due turbulence or when turning rapidly into a headwind, then yes, it will cause a temporary IAS increase due to the inertia of the aircraft. So whether or not you call it beneficial, depends on what timeframe you are looking at. What I mean in this video is the benefit of headwind once the wind component is stable.
If you had a discontinuity in the box along a fplan - will the FMGC track miles still be accurate? As in will it draw an imaginary line to the next waypoint.
Indeed, the FMS will draw an invisible line to the active waypoint. So if the flight plan is not properly sequenced or you are too far off track, the FMS distance will not be correct.
In the event of managed speed in open des& nav. Will speed constraints still be followed even if not in des?
Yes, as long as you are in NAV mode, the speed constraints will be followed if the speed is managed. No need to be in DES mode for that.
awesome video Cpt! How do you compensate for HDW or TLW? Thank you!
There is no need to calculate for that. You cannot ignore it, but instead of doing a calculation, just keep calculating the profile as usual. When you get high (due to a tailwind or another reason), use speed brake. When you get low (due to a tailwind or another reason), set VS-500. The wind doesn't make much difference unless it's a lot for a long time.
When you arm the appr after extending centreline from FDP, is there any need to manage HDG before to get the intercept point? Or does pressing appr give you that intercept point. Thanks
No need to manage HDG, unless you want to fly selected vertically. If you press APPR, you will get APP NAV (blue, or green if already in NAV), which will intercept in the same way as manage HDG.
6:36 I don't understand how do you get from 33*3=99 (assume you want us to multiply by 100 to get the altitude) -> 9900->~10000ft - 3000ft(for 300+kts)=7000 to 6000ft?
You have to round down the distance. So 33 nm becomes 30 nm. Then multiply that by 3 and you get 9000 ft. At 300 kts (also rounded to the nearest reference), you have to fly 3000 ft lower, so 6000 ft. Rounding before calculating is done for workload management. There is no need for high frequency calculation, so you can calculate at 10 nm or 5 nm intervals.
If you want to be actual RAW DATA, turn off FPV.
This channel is so good 👍🏽
Glad you like it
I don't understand why you need the speed break when you have head wind when the head wind should technically reduce the speed because it's forcing the opposite side.
Because you need a sustained 30 kt headwind component for a long time to have the same effect as the speedbrake. That situation is very rare, so in reality you will need to create drag yourself when you are high on energy.
Wow 🎉 best explanation ever …… for row data , 22 years flying the A320 ,thank you. !!!
Glad you find it useful 😊
How about just using distance rings for the rough estimate and round down?
There are some situations where that will work, but not many. But you can try and see if it works for you.
I think that scenario was excellent for the FO to learn some energy management. You keep the flight within a safe envelope so nothing to worry about. We tend to learn better by “messing” things up. I’m pretty sure that FO will keep an eye on his energy very well from now on.
Yes indeed, that's my training style. They learn much faster like that.
Your videos with real life scenarios help me so much with flying in vietnam. Thanks a lot!
I'm glad you find it useful. Keep up the good work 👍
Are you staying Vietnam ?? Captain
Yes indeed
Can these rules of thumb be used for other types of jets? Of the same class?
Yes it can. It works well for the B737 (I used to fly that) and even bigger aircraft. Not sure about small business jets, but I think it's not that far off.
Hi Tjeerd, I hope you are doing well. I just had a few questions for you. I have recently finished line training and have found your energy management method not only useful but also intuitive. I would also like to point out that I read your book and especially enjoyed challenging myself with the quizzes. I have however found that many captains in my company seem to think I am too “low” or too conservative on my energy management. Of course, being more conservative is definitely preferable to the opposite, especially given my relatively limited experience at the beginning of my career. However, I have been trying to work out why this is. As you mention in your book and your videos, there are many calculation methods and some captains seem to multiply altitude rather than distance (or divide distance rather than divide altitude). It is my understanding that both methods provide similar but slightly different results. The former (your method with all things being equal) would provide a descent path of about 2.82 degrees whereas the latter (the one used by some of my colleagues) provides a descent path of about 3.13 degrees. This could perhaps explain why they feel that I am low as their calculation assumes a steeper path (higher altitude for the same distance from the threshold). Presumably, they are then able to compensate/adjust for this with their more experienced feel for the aircraft’s energy. What are your thoughts? I also thought a reason could be a misunderstanding surrounding the expression “being on profile”, as you eloquently explained in your book. For instance, I might find that I am on profile after subtracting altitude for speed correction (and thus below the 3 degree profile) whereas they might consider that being “on profile” means being on the 3 degree path and intending to solve speed reduction in a different way (not directly incorporated into altitude calculation). What are your thoughts? Thank you for taking the time to read and thank you again for providing light on the fascinating subject of energy management. I look forward to hearing back from you.
Using a different calculation will definitely create a discrepencie between opionions whether you are high or low. However, the difference is not that much. Also, your captain might be calculating for the wind and weight, something I don't teach (take it into account, but don't calculate for it), but that can also create a difference of optinion. The definition of being on profile and how to deal with that is indeed also open to interpretation. The method I teach is not an SOP and therefore you will get as many different answers as to whether you are high or low on energy. However, from my experience, a shocking amount of pilots don't fully understand this subject, including some training captains and examiners. This makes it very difficult for a new pilot such as yourself to find the truth. Not to say that your captain is wrong, but he could actually be wrong. It's easy to check. Ask him if he is on profile, then provided no unexpected shortcut is given, does he need the speed brake, gear down early, or Flap 2 early? One other thing I should mention is CRM. Unless you are way off profile, your captain should just let you fly the aircraft. You are not going to improve much if your captain keeps micro managing your descent and approach. Of course you can't tell him that so bluntly, so unfortunately you will have to navigate the wates of the unspoken social tact of ego sensitive aviation related matters. Keep up the good work. Your inquisitive attitude will get you places. I wish you all the best with your career.
Perfect 👏🏻👏🏻👏🏻
I have a question. If you are vectored at 4000 feet and then you are clear for lnav/vnav. Your FDP is 3000 feet, what you should do? Continue descend with V/S to 3000 and once the top ND is your FDP arm the approach?
It's a good question but it needs more context. If you do a vertically selected approach, you need to have a level segment before the FDP (or ideally not below 3000 ft, even if the FDP is at say 2000 ft) so that you can pull at 0.3 nm before and thus have a predictable vertical path interception. So in that case, setting a V/S high enough to see the arrows creating a level segment is advisable. If you do a managed approach, you need to be careful that in the case of a dive and drive (only one vertical path segment coded) the aircraft does not over speed once it goes into FINAL APP and dives down to catch the vertical path. In that case, it's best to be fully configured so that a pitch down moment does not cause the speed to increase significantly. Fiddling with the vertical speed in this case does not provide reliable results from my experience. This is because the aircraft can go onto FINAL APP any time it's close enough (provided APPR is armed of course). When doing a vertically managed approach, you can delay arming APPR to prevent an unwanted pitch down moment, but again, that is only an issue if only one vertical path segment is coded. So it depends on how the FMS is coded and what you are trying to achieve. Does this answer your question?
Hi , first of all , ı would like to thank you for your whole videos. I wonder whether this aircraft has DPO function or not?
None of the aircraft featured on my channel have DPO. From my experience, it doesn't have much effect on descent management though. DPO doesn't affect the calculation or methodology.
Quite rare to find such video on TH-cam thanks a lot mate !
Glad you like it 😊
Hello, first of all, thank you for the videos you have made; they are very helpful. I have a question for you. You mentioned that selecting flaps to create drag is not correct and causes problems, but when I use 1 flap in open descent mode 10 knots below the green dot, I see a significant difference on my vertical speed . Can you explain this topic in more detail?
The increase in vertical speed comes from the period when it is pitching down to catch the speed target. If you would film it like I do and then take an average across several flights, you will find that it makes no difference at all. Especially when there is a bit turbulence, it can give the impression that the vertical speed will increase at ttimes, but it will equally reduce at times as the plane has to pitch up to catch the speed target. Flap 2 does create drag (about the same as speed brakes) but there are other reasons not to use Flap 2 for drag, which I describe in my book.
Captain words cant describe how grateful i am after watching ur videos so so so informative....like where was i from ur youtube channel lol!
Glad you like it. Don't forget to buy my book 😁
Captain ur videos are amazing U really cover a matter which Most of us (FO) struggle sometimes with which decent management. Thnx a lot 4 the tips that U provide
Thank you for your kind words. Glad you like it.
Hi skipper. Great videos. Sorry to ask but could you explain your calculation in altitude required for deceleration from say 250kts to green dot? I always used to think in 1nm per 10kts but not in altitude required. Thanks in advance
There is no need to calculate it like that. You just multiply your distance by 3 and fly lower depending your speed. You can find my calculation method here: th-cam.com/video/4odUv3zTxb4/w-d-xo.htmlfeature=shared
Thanks for your videos. In the video, you said "V/S should not set little because the aircraft not yet LOC* otherwise you would end up above G/S" (02:13). My question is that isn't it ok you set V/S lower so that we get G/S first, and then LOC? Why does LOC have to be set first before G/S?
The autopilot does not allow GS capture unless the LOC is captured. This is a safety measure because you have to be within the safe zone in order to descent on the GS, due terrain and obstacles. So if you set a too low VS, the aircraft is unable to capture the glide slope.
I've just started to watch your videos and are so interesting. One basic question: we need 3nm to lose 1000ft, and so you divide track miles by 3 to get the altitude you should be at. Why are you multiplying miles by 3 instead? Since they give you a higher result, is this just to have more buffer? Am I wrong?
The reason why I am multiplying distance by 3 is that it just works much better, more accurate, and less workload. The notion of 3 nm per 1000 ft is not accurate. It's actually 900 ft.
I don’t understand your math in the examples. 32nm @ 255kts. according to your formula should be 30nm/3 = 10,000 -2000 = 8000 but your answer is 7000. Same for the 33nm @ 320kts. 30/3 = 10,000 -3000 = 7000 but your answer is 6000. Unless your field elevation is -1000, I don’t follow your math.
You have to round down first. So 32 nm becomes 30 nm. Also, you have to multiply your distance by 3, not divide. Then for 250 ft, subtract 2000 ft. So 30x3=9000, minus 2000 becomes 7000 ft.
Very helpful video
T Bạn b
Hello sir, thank you for the explanation, it is so helpful. I will be having an airline interview next month that I need to do a sim eval in an a320 sim, but the problem is i never flew a turbofan before, and i was told i need to perform a raw data ils approach with strong wind, what do you recommend me to do at this time. Would it be ok if i follow your way of flting in the video Thank you once again
Get a high quality joystick and 2 engine throttle, then practice with X-plane and Toliss A321. Hire some time on a real Level-D sim if you can. The method I describe in this video I think is tge best way to do it. You might find that another method works better for you, but this is a good place to start.
Again, great video. Thanks a lot 👍
nice video. its ok to use speedbrakes whenever executing glide slope from above isnt it?
Yes, but make sure the speed bug is below the current speed, don't select speed brakes with Flap Full, and don't forget to arm it again if previously armed. Gear down has more drag and less to worry about in that situation though.
Again, a great video. Thank you so much for your input! Best regards from Germany 👋
Thanks for the video! The situation is very useful for the experience. From my pov, the blockbuster could have been prevented by setting flaps 2 when the speed dropped to 190 first time at about 6000).
@7 to increase descent would it be preferable to keep DES mode with speed brakes instead of OP DES with higher speed or VS mode with lower speed?
You could do that, but you have to set the speed bug higher than the current speed and if the aircraft captures the yoyo, it will add thrust if the speed bug is still higher than the current speed. This is a situation you have to watch out for and it increases your workload, so it is better to use OP DES with speed bug up, or VS with speed bug down, which has the same effect but you don't have to worry about the yoyo and unintended thrust increase. A lot of these things have to do with workload management. There are always multiple ways to do things but there is usually only one way which is less workload.
cool video.would it be good if setting VS about -1500 and and speed 250 about 2000 before approaching FL100 as a general rule and another question OP DES without increasing speed would be ok or just managed DES or VS ? because loosing 1000ft only and may be V/S -500 enough? and around Delin how about keeping the speed brakes with CONF1 instead of selecting CONF2? last one my insructor said to set STANDARD before flashing not to level bust if qnh is more than 1013 so i have to memorise TA ?
"Using VS when 2000 ft above FL100": That increases your workload. Let the aircraft slow down to 250 kts at FL100 using DES mode and managed speed. That reduces your workload. If you approach FL200 (a few hundred feet above) and you don't think the aircraft will make the speed restriction, you can reduce the VS, but 99%, the aircraft does it just fine. "...because loosing 1000ft only and may be V/S -500 enough? ": At that point, we are 1000 ft high on profile. If you set V/S -500, you will get even higher. The fact that you have only 1000 ft to go is not relevant. "around Delin how about keeping the speed brakes with CONF1 instead of selecting CONF2?": You can only do that if you are not too high on profile. In this case, due terrain we are so high on profile, Config 2 is more appropriate because it allows the aircraft to slow down more and speed up more later when passed the altitude constraint, preventing a high energy situation. "... set STANDARD before flashing not to level bust if qnh is more than 1013 so i have to memorise TA? If the QNH is very high when climbing, an overshoot could potentially be an issue with a very high rate of climb and the cleared level being only 1000 ft higher than the transition altitude. The autopilot is quite aggressive pitching to capture an altitude though. You should not look at the flashing QNH to determine when to set STD though. For example, if the transition altitude is 9000 ft and you are cleared to 9000 ft, QNH will flash as you are at 9000 ft (or approaching depending on the pin settings). You should keep QNH in that case and not set STD, even though it flashes. So yes, memorize TA, but setting STD earlier is risky because you can make the mistake to set STD while cleared to an altitude. Every method has advantages and disadvantages. Not to say your instructor is wrong, but when one situation is more likely to happen more often than another, which method with which advantage/disadvantage do you pick? A level off at transition is very common. A very high QNH with a very high climb rate and a level off 1000 ft after transition is so rare that after 13000 flying hours, I did not see that happen once. But point taken. Next time in the sim with some extra time, see if you can make this an issue, see what climb rate and what (realistic) QNH is needed for an overshoot.
nice video. would it be correct in your case if i used speed brakes or set less VS or both instead of pushing VS/0 while in conf3 and G/S armed?
You could do that also. However, in case of speed brakes, do not forget to arm it again after. Whether or not the amount of drag will be enough to prevent an overspeed is questionable though. As for the VS, if you set less than VS 0, it will just take longer to get the result you want, increasing the chance of an overspeed.
another good video.he could have used speed breakes at f3 when speed exeeded couldnt he as long as its not FF even though it has little effect at low speed?
The FO should not be in this situation in the first place. So the question is, how to fix the mistake. In theory, indeed you could select speed brake (when the speed target is lower). However, be careful not to forget to arm it again.