Hot Start Challenger 650 | VNAV Climb | X-Plane 11

[@foxtrotalphaaviation]

Thank you for watching, if you have questions please let me know. Warning loud external sounds, please adjust your volumes down as required. Rob H

[@pablogomez1343]

Great video!!

[@wgeffon]

VNAV climb’s actually work well in the Challenger as long as you understand when to use FLCH and when to use VVS. The danger in FLCH as stated in the video is you get Full N1 thrust setting. If you have a level off early or not much altitude to climb to, full N1 risks overshooting the level off altitude. The way around this is to use VS and VNAV. When doing so, VS will now be VVS and you will have a small donut appear on the vertical speed indicator showing you the required rate of climb to the next altitude. Match your VS via the wheel to the donut and you’ll be using VNAV to get you to the level off height. It works well and I have used it this way for years. However, most of the VNAV departures with level off’s and at or below’s are going away. I heard they were being flown incorrectly too many times and that may be part of why there are fewer and fewer. On a side note, if you want your speed restrictions done for you, Perf Speed does a great job but you much be in VNAV to have that option.

[@foxtrotalphaaviation]

Thank you for your comments, I will give these suggestions a try.

[@henriksmids3134]

Thanks for the video, appreciate them very much!

[@kenschreiner4316]

Thanks again for this video series Rob!

[@vanguard4283]

Hey Rob, Love the videos and appreciate so much of what you're doing! Showing us a glimpse into how it's done in the corporate business jet world. They help out tremendous so thanks for everything. I have a request for a video also if I may; on the normal-procedures side which is: Circle-to-land approach on a reciprocal runway -which is very common in Europe. And the US one a circle -to-land on a 90 degree off set runway. Eagerly waiting for more videos Rob and hope your channel will lift off soon because you deserve it!

[@foxtrotalphaaviation]

Thank you! I will work on a circle to land video series, will show you how we train at KJFK, KMEM irl and others.

[@tonforr]

Thanks great information

[@Gilles45]

Hi Rob... tx for the info on VNAV. Personally, I'm a VNAV aficionado, in the Challenger and in most planes I fly in XP. It might not be ultra realistic, but it's fun!

[@foxtrotalphaaviation]

I agree it’s a lot of fun

[@maxvogan8183]

I always log my Flight time . I have at least 33000 hours now in multiple type planes and helicopters

[@owainwright6055]

A TRE passed on to me the main difference between VS and FLC. VS for (V)ery (S)mall changes and FLC is for (F)airly (L)arge (C)hanges. Pass it on 😄

[@foxtrotalphaaviation]

Love it, great advice. FLC in mountainous 🏔️terrain

[@komrad1983]

Nice videos on your channel. What I think is going to work really good (in reality too). Is calculating flex thus not going so much vertical takeoff on TO thrust while selecting roll mode and then going FLC. and then when you clean up and 800-1000AGL doing pre-selected custom number for target climb. Not the one the box calculates, but manual such as 80.0% N1 entered in the target line. I think it will work well for lower initial altitudes, such as 3000 or 5000 we see a lot. And then as you pass 10000 and ready to speed up, revert to CDU calculated CLB N1 number. FLC with 95-91 regular TO/CLB mode makes this thing go up like a candle, don't think the passengers would be too happy about 6000-7000 fpm climbs on these short flight occasions) What to you think about that? That if we don't have the luxury to use V/S in our SOP. At least for sure we can use it last 1000-1500 feet before altitude level out for a smoother experience in the cabin.

[@coma13794]

Given the tendency to bust 250kt below 10k, especially after a level off and then when the climb resumes (throttle comes in before the pitch and you can hit 270kts for a lengthy period of time), how much would you rely on it IRL given that it's technically a FAR bust? Is a transient bust for relatively short period of time considered acceptable (ie, not going to lead to questions or an enforcement action)? Or, should a pilot re-double their efforts to not bust 250 and avoid the use of FLC below 10k?

[@ThorNjord]

That, plus the significant pitch which would be really uncomfortable in real life. I think in real life Rob would use VS and gradually increase vspeed, and then transition to FLC once things have stabilized. Rob?

[@foxtrotalphaaviation]

@@ThorNjord yes correct, however some companies prohibit the use of VS in a climb. The alternative would be auto throttle off, set N1 manually, V1, Vr pitch for 10 degrees, pitch sync as required, adjust power as required manually. Or auto throttle off, set N1 manually, V1, Vr, Pitch 10 degrees, 400’ call for NAV or HDG FLC 200/250, manually set and adjust thrust as to not bust 250 Kts. Please remember in the US, if approved you can request a high speed ATC approved climb, this is prohibited in Canada however. I don’t trust auto thrust to prevent overspeeding, that’s my job. Every company has a different SOP

[@foxtrotalphaaviation]

@@ThorNjord also remember the CL650 auto thrust system is a very old design, it uses a clutch, it is very important to help the auto thrust by pulling back on the thrust levers until you feel the clutch grabbing, it feels like a clicking or a vibration. Again, I manually pull the thrust back on low level offs like KBFI, KTEB. KTEB RUDDY6 is famous for altitude busts and pilot violations.

[@foxtrotalphaaviation]

Great question, see below

[@toddn4813]

Curious as to why you're using FLC in a Challenger? They are notoriously bad in Challengers. For example, you were roughly at 12 degrees pitch up after rotation, then selected FLC. The plane went from 12 to 22 degrees WHILE IN A BANK!...boy your pax would be unhappy!!

[@foxtrotalphaaviation]

Thanks for your comment. as I’ve described in other videos, I would normally takeoff in VS mode, in order to manage the speed in a non-mountainous environment, if there is any vertical hazards nearby, including mountains, I would be climbing in FLC mode at 200 kts immediately after takeoff, and then switch to FLC 250 thereafter. Some companys prohibit the use of VS during takeoff.

[@alukis8791]

how do i program step climbs?

[@foxtrotalphaaviation]

Hi, they are usually completed manually

[@davidbrownlee8903]

I find FLC climb is way too aggressive (climbs like a F-35) much prefer VS climb.