Captain Brady, please know that your hard work hasn't gone unnoticed and is deeply appreciated. Watching your videos is an absolute pleasure, and I cannot thank you enough for sharing your expertise with the world. You have made a significant impact on my learning journey.

@ChrisBrady737

7 ай бұрын

Thank you very much for your kind words. It is always rewarding for me when I hear that my work has been helpful to people.

Chris, you’re incredible! The amount of work you put into preparing these long videos is just amazing. I just wanted to say that I really appreciate this unbelievably huge effort! By doing so, you really make it easier for me understanding the FCOM. The tech exam for my TR is next month and so far you’ve been a big help! Thank you for that! :)

@ChrisBrady737

2 жыл бұрын

Hi Ben, you are very welcome. Best of luck with your TR.

Thanks for the quality work. I just started as a software engineer at Teledyne Controls two months ago so it's nice to have a video I can forward to friends to show where all of our parts go in the airplane, and to see how it all fits together. I'm a little surprised that the 3.5" floppy disks were twice as slow as the portable data loader. ARINC 615 is pretty slow, but I can see how the 3.5" disk would make it even slower. Newer planes have ARINC 615A over Ethernet which is much faster. The selling point for the newer models of ADL and PDL is support for verifying digital signatures on the LSPs (Boeing or Airbus) before the software can be installed.

@ChrisBrady737

2 ай бұрын

My pleasure, glad they were useful for you and your friends. I think the MAX has the ARINC over Ethernet which speeds things up somewhat. Just as well with the increasing size of software updates!!

Thanks a lot for all the content that you produce on your amazing channel Chris, I really enjoy and appreciate it. I have learned a ton of interesting details and I love your patience and attention to detail. I don't fly the B737 at the moment, but nonetheless I still enjoy every single one of your videos... I am always looking forward to the next one, great job. cheers.

@ChrisBrady737

2 жыл бұрын

Thank you for your kind words. I am impressed that you watch my videos and yet are not on the type but I guess that some of the info is transferrable. All the best to you.

Wish our airline had the colour enabled on the MCDU's. It looks so nice in your presentation, but it also looks alien! Great video Sir!

@ChrisBrady737

Жыл бұрын

The colour really helps. Lots of other examples of use of colour in the other FMC videos.

Thanks Chris for your book. I purchased it the other day. I am starting Qantas 737 FO training next year and this is giving me great preparation for the aeroplane I’ve always wanted to fly. Great work.

@ChrisBrady737

9 ай бұрын

Thanks for getting the book, I am sure you find it helpful. Enjoy flying the 737!

Awesome stuff again, even for us mere virtual pilots. Very nice supplement to the FCOM/FCTM!

@ChrisBrady737

2 жыл бұрын

My pleasure, glad you enjoyed it

OLEO SWITCH...oh my..Chris thanks a lot for your video. It really helps me to resolve a big problem.

@ChrisBrady737

Жыл бұрын

Glad to hear it 👍

You're doing a great job, Chris. After retiring as B747-400 Captain/TRI/TRE, I became a Synthetic Flight Instructor (SFI) on the B737 CL & NG. I read your "Boeing 737 Technical Site" and watch your videos (plus a few other books on Apps) to help me familiarise myself with the 737 CL and NG. I flew the B737-200 Advanced from 1975 to 1978 as an FO, and from 1980 to 1988. I can recall using Omega in one of our airplanes. I also remember using portable INS, installed in the mid-cabin during a delivery flight of a new airplane from Seattle. Otherwise, we flew using the VOR and ADF. You can say that I was from a different era. Thank you very much to you and your work (as well as Petr Smejkal - 737 Handbook, Bill Bulfer - B737 Cockpit Companion, Maurits Hulshof737 Performance Handbook, Pat Boone - B737 MRG) for helping me up to speed teaching the younger generations.

@ChrisBrady737

2 жыл бұрын

Thank you for your kind words. Yes it was a different era when I started on the 737 as well, although I was a decade behind you! I tell my F/Os how for years we used to hand fly SIDs, STARs and approaches on raw rata and no F/D or A/T regularly to stay in practice - all in and out of LHR before the days of TCAS! The other 737 gurus you refer to all do a great job although our work is quite different. Glad to hear that it is all being well received.

I bought you’re book and enjoyed it tons. my friend works on the p-8 Poseidon and he said he often time referencedimages on the technical site at work stating that sometimes they were better then what they were given at boeing!

@ChrisBrady737

2 жыл бұрын

I don’t doubt it, Boeing only use drawings but I think photos are much better. Great to hear though 👍

Perfect video ...for me as a captain, you clarify me the schematic of FMC ...thanks Chris for your help which is always highly professional and appreciated :) best regards

@ChrisBrady737

Жыл бұрын

Thank you for your kind comments. Great to hear that you are finding these videos useful.

thank you, you are doing great sir, pls continue and we are ready to take knowledge from you

@ChrisBrady737

2 жыл бұрын

You are very welcome. Good to hear that you finding the videos useful.

Excellent presentation! Thankyou!

@ChrisBrady737

2 жыл бұрын

Glad you enjoyed it!

Great video as always! I would love to see a video CDU deep dive series with all the tips and tricks that you've learned in your career.

@ChrisBrady737

2 жыл бұрын

Thanks Jan, I have a couple more FMC videos planned.

@Jet-Pack

2 жыл бұрын

@@ChrisBrady737 Awesome, looking forward to watching them!

Great video!Thanks Chris....

@ChrisBrady737

2 жыл бұрын

You are welcome and thanks again for the photos.

You’re a living legend capt Chris damn your vidoes helps me alotta as an aircraft engineer ✅ I know more about the 737 even thou I don’t have a type rating yet!

@ChrisBrady737

8 ай бұрын

You are too kind. Glad you are enjoying the videos

@CFJ_5N

8 ай бұрын

@@ChrisBrady737 how do we get in contact with you capt Chris you on instagram Facebook or twitter ??

Bring back the floppy disc! 😂 Great job Chris 👍

@ChrisBrady737

Жыл бұрын

Noooo 😂

Great!!! Thanks so much

@ChrisBrady737

Жыл бұрын

You are very welcome. 2 more in this series about the FMC are coming in the next couple of months.

THANK YOU, CHRIS!

@ChrisBrady737

2 жыл бұрын

You are welcome Jay

Chris, I too have your book and have watched the many videos you have presented, some more than once. This is my 2nd round with this video for example. I have a passion for airplanes and computers, so it only makes sense I take a very strong interest in avionics and fms(es) and/or fmcs'. What's interesting is hearing about sperry and remembering there's an old trick to get into hidden maintenance menus. sperry5 and the R lsk 6. Something like that, not sure of much more. :) I doubt it works on the 737 but this old trick does work on some unnamed aircraft. Anyway, I'm far too young to really know much about these older systems except for what I've read in the dated but famous brown FMC books and no that's not where I learned the sperry5 hidden menu key sequence. To be quite frank, I bought the brown books well after they became obsolete just to learn more about the various logic systems that comprise the FMS / FMC. I'm sure you're aware of the cockpit companion app on IOS / IPAD OS. Between your material and that app, there aren't many questions that can't be answered about the 737. At any rate, really great work! I wish someone could put together the wealth of information that the 737 has for the 777 but I suspect that the 777 is still too new.

@ChrisBrady737

2 жыл бұрын

The trick you refer to is not to get to the maintenance menus but to get to some hidden options pages. More details here www.b737.org.uk/fmc.htm#Hidden_Pages

Weather Map: For the Weather Map Display function, the MCDU receives compressed weather map data via an uplink from the Airborne Telephone/Telelink. The MCDU decompresses the weather map data and displays it on the MCDU. Control of the Weather Map Display function is provided by the Telelink System. The Telelink System is connected to the MCDU subsystem input port number 1. Therefore, access to the Weather Map Display function is achieved by selecting the ACARS prompt at MCDU line select key (LSK) 2L, which will bring up the ACARS MENU page. The Weather Map Display function may be accessed from the ACARS MENU page.

@ChrisBrady737

2 жыл бұрын

Great info Dylan. Do you have any photos of the function in use that you could send to me?

Awesome video as always, thank you! As for the CDU fail light I can’t be sure if that works on 737 but i had one on the 757 before the IDG started and the message was gone after IDG started which was … weird. And DSP light works all the time on the 737 I ferried, I will try capture a photo next time I see it~ again, your videos are always my best knowledge supplement thanks for the hard works.

@ChrisBrady737

2 жыл бұрын

Thanks for your kind words, glad you find them useful.

Hi Chris. Another great video. Thank you so much. You said omega was turned off in the late 70s. We were using it on the F28 in the late 90s (I think it was switched off around 1998). The funny thing about omega was it didn’t work too well in cloud! Cheers, Tony

@ChrisBrady737

Жыл бұрын

Hi Anthony, thanks for the info. Yes you are correct Omega was around until late 90’s. I never used it in anger but I am surprised to hear about the effect of cloud on its performance, how strange!

@tonywaters737

Жыл бұрын

@@ChrisBrady737 I remember after Omega was decommissioned, we had nothing in the F28 other than VORs etc, flying around Western Australia over long distances. We did point to point nav to track for a 5nm final and 36 second dme checks to estimate our ground speed! I remember a Lufthansa pilot paxing on the jump seat expressing his disbelief. Anyway, glad to be on the NG doing similar flying. Your videos are a great help to me. Thank you!

@ChrisBrady737

Жыл бұрын

Raw data flying is a great way to get experience. Nice to know that you have those skills if it all goes dark inside!

And another home run. Thanks for the attention to detail and a new MACDOUU. That’s a first for me :) great attention to detail. Any info on future updates of the FMC version would be fun to know. Wish you a speedy recovery. Regards from another pilot that have had COVID. No biggie for me. Hope it wasn’t for you as well.

@ChrisBrady737

2 жыл бұрын

I guess "Mc Du" is the Scottish pronunciation :) I will probably do future FMC updates as one-off short specials. In the meantime I am making some videos detailing the FMC updates so far (up to U14).

@danielfreifeldtaisen

2 жыл бұрын

@@ChrisBrady737 Perfect Chris! Keep up the Mc Du work. Love it :)

@danielfreifeldtaisen

2 жыл бұрын

Hey. Chris. Any news on McDu’videos? I know we are all summer busy. Just missed your videos

@ChrisBrady737

2 жыл бұрын

@@danielfreifeldtaisen They are on their way, I am still trying to source a couple of required photos then I can record and launch.

Wow thanks Chris, I NEVER noticed DISPLAY would not lit up on 737s' CDU... like thousands of times.... Have to check my manual and it's indeed absent even for 300, I always think it'll lit up when you are not in "current" page (like in LEGS pg2, in CRZ page when still climbing etc...), turns out it's what it would be on all other CDU equipped Boeings from 744 to 777 It is that easy to slip on experience and never give it a second thought....

@ChrisBrady737

2 жыл бұрын

It took me a long time notice it as well!

thank you capt

@ChrisBrady737

2 жыл бұрын

You are very welcome

If chess has Kasparov and Fischer. Than Aviation shall have Chris Brady. Thank you again sir.

@ChrisBrady737

2 жыл бұрын

You are too kind.

Thx Capt. Photos of FMC can be found just by googling it and selecting images

@ChrisBrady737

2 жыл бұрын

OK

Hi Chris, when the N1 targets are calculated I imagine there must be some crosstalk between the FMC and the PMC on the classics and EEC on the NGs? I had assumed the PMC/EEC would continuously update the thrust targets for takeoff (until 80 knots) and go around and limits, as inputs to the PMC/EEC changed. Regards

Hello Sir , Great video again . Our aircraft equipment cooling off NNC does not have FMC SOURCE SELECT SWITCH option . Any take on the same . Secondly , the ALT NAV GPS option . I had a dual FMC failure in NG over oceanic airspace . I don’t recollect observing the ALT NAV option under MENU . Is it an option by airlines or did I fail to see it . 😬 Thank you so much for the video !!

@ChrisBrady737

2 жыл бұрын

Hello, The FMC SOURCE SELECT is only fitted on dual FMC aircraft, so possibly yours are single FMC. ALT NAV is an optional extra. Regards Chris

Hello Captain! Can you explain me the FMC message "VERIFY TAKEOFF SPEEDS" that often appears after first engine start? Thank you!!!

Hi Chris. Are you planning to add coverage for the new Boeing FMC and their related Touchscreen CDU as well?

@ChrisBrady737

Жыл бұрын

Eventually, but I have a few other subjects lined up first.

From other sources: - The Offset annunciator (OFST) is only active if the physical program pin for Lateral Offset is enabled. - The Display annunciator (DSPY) is presently not used on the (M)CDU. What "presently" exactly means I have not been able to find out.

@ChrisBrady737

2 жыл бұрын

I dont think DSPY was ever used on the 737 but you never know!

@Captainrowe

2 жыл бұрын

Great information! The offset light function actually works in our fleet. The lateral offset offers a great option when avoiding weather or flying behind another aircraft on same route and wake turbulence becomes a factor.

Very detailed and interesting video, thanks! Is there anywhere to access these slides online?

@ChrisBrady737

2 жыл бұрын

Thank you. Much of the information in these videos can be found in the accompanying book, The Boeing 737 Technical Guide

as an embedded software engineer, 20MHz~30MHz MCU, is interesting. Thanks

@ChrisBrady737

2 жыл бұрын

You are welcome

HI Chris , I have question . my question is why in B737 the electric hydraulic pumps is always ON ??! can you explaine . THANKS

@ChrisBrady737

Жыл бұрын

I explain this in my Hydraulics video. kzread.info/dash/bejne/q31r2JuFqcyWprg.html

I have a good “ out of the plug “ picture of the MCDU , how can I send you so people can have a look ?

@ChrisBrady737

2 жыл бұрын

Yes please, email is best

Hi, During Cruise ECON speed schedule. Will the mach number decrease with decreasing weight?

@ChrisBrady737

Жыл бұрын

I will hand that question over to the excellent Captain Thiago Brenner to answer.

@thiagobrenner2509

Жыл бұрын

Thank you so much for your kind words, Chris! Yes, @Driver170 ! The lighter the weight, the slower the speed for the same CI, wind and altitude. It’s a very, very slow thing. But you can see on the FMC LEGS page that predicted Mach is decreasing a bit every few waypoints. Example (random numbers): 0.788, one hundred miles later is 0.787, another hundred miles and you see 0.786, and so on. But remember that wind has a big influence on that, so, wind inserted on FMC must be the same for all waypoints for you to better observe that. I hope I could help! Cheers!

On the third slide it says Omega system was terminated in 1977, but it was in 1997, I think

@ChrisBrady737

Жыл бұрын

My mistake

@thepirat000

Жыл бұрын

@@ChrisBrady737 I love your videos. Thank ypu for your hard work!

@ChrisBrady737

Жыл бұрын

My pleasure

Fantastic video! I'm working on interfacing an actual MCDU (CRT version). I have got the actual old FMC with me if you still interested on a picture :) You video did help me out to understand the different version of equipment and then realize how much I can do with it. At the moment I'm trying to realize if the 737 classic had other subsystems shown in the MCDU or it was only able to show FMC. Have you ever seen more option aside from FMC on a classic? This is the MCDU in question: kzread.infoUyO2eRELq98?si=3l9h1BGdN3uGZ6VK