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The Boeing 737 Technical Channel
United Kingdom
Registrace 6. 07. 2014
These are video presentations of Boeing 737 systems and topics from my website and book The Boeing 737 Technical Guide by Chris Brady.
737 GPS Interference
This covers the topical subject of GPS Interference, such as jamming and spoofing which is prevalent in areas of conflict or tension such as Ukraine, Syria, Israel and the NATO border with Russia. Although GPS interference is aimed at downgrading military capability it also affects commercial air transport. In this video I describe how the 737 navigates, how GPS works, what effects can be seen during interference and what measures can be taken to mitigate these effects..
Contents:
2:02 FMC Position
10:55 Radio Position
17:56 IRS Position
31:58 GPS Background & Theory
49:29 GPS Equipment
1:00:03 GPS Interference
1:26:52 Hybrid GPS-Inertial
Contents:
2:02 FMC Position
10:55 Radio Position
17:56 IRS Position
31:58 GPS Background & Theory
49:29 GPS Equipment
1:00:03 GPS Interference
1:26:52 Hybrid GPS-Inertial
zhlédnutí: 13 273
Video
737 Oxygen
zhlédnutí 9KPřed 6 měsíci
This video covers the description, use, checking and servicing of flightdeck, cabin and portable oxygen systems and some interesting options available. Contents: 0:32 Flightdeck Oxygen 1:17 Mask 19:28 Pressure 27:00 Servicing 39:29 Cabin Oxygen 1:02:33 Additional Oxygen Options 1:07:18 Freighter Oxygen 1:10:48 Portable Oxygen Systems 1:14:18 737-100/200 Differences
AS1282 NTSB Preliminary Report
zhlédnutí 24KPřed 7 měsíci
This video is my analysis of the NTSBs preliminary report into the Alaska Airlines AS1282 mid-cabin door plug event of 5 Jan 2024. I simply cover what happened and why/how it happened as far as it is known. Contents: 2:21 What happened 22:55 How It happened 28:55 Other Technical Aspects Link to the NTSB Preliminary Report: www.ntsb.gov/investigations/Documents/DCA24MA063 Preliminary report.pdf
737 Technical Aspects of AS1282 Updated
zhlédnutí 42KPřed 7 měsíci
This video is an update on the technical aspects of Alaska Airlines AS1282 mid-cabin door plug event of 5 Jan 2024. I have updated many of the diagrams & descriptions and added animations to show the closing and locking mechanism. I have also improved the sound quality. Contents: 0:40 Hinges 1:50 Guide Tracks and Pins 2:56 Securing the Door Plug 4:05 Stop Fittings 6:28 Post-Incident Development...
737 Technical Aspects of AS1282 FAQs
zhlédnutí 33KPřed 7 měsíci
Please note this video has been superseded by czcams.com/video/5FcyvFfHsjQ/video.html Since my previous video on the mid-cabin exit door plug option, a lot of additional questions have been raised about the door and some associated systems. I will try to address those questions here with some new and hopefully helpful photographs. There was also an error in that video in which I said the door p...
737 Mid-Cabin Emergency Exit Doors - Plug Option
zhlédnutí 221KPřed 8 měsíci
Please note this video has been superseded by czcams.com/video/5FcyvFfHsjQ/video.html This video is a follow up to yesterday’s video on 737 Mid-cabin Emergency Exit Doors. In it I focus on the construction and securing of the plug option. This is in response to the incident to Alaska Airlines flight AS 1282 whose mid-cabin emergency exit door plug detached in-flight whilst climbing through 16,0...
737 Mid-Cabin Emergency Exit Doors
zhlédnutí 134KPřed 8 měsíci
This video is in response to the incident to Alaskan Airlines flight AS 1282 whose mid-cabin emergency exit door detached in-flight whilst climbing through 16,000ft on 5 Jan 2024. Fortunately, there were no injuries. In it I cover the reason for the mid-cabin exit door, its construction and operation, Door Warnings & Flightlocks, the SPSEU, MAX PSEU Differences and Alaskan 1282. Errata A deacti...
737 Windows
zhlédnutí 13KPřed 8 měsíci
This video gives a technical description of the windows and associated systems and procedures in the Boeing 737. Contents: 1:17 Flight Deck Windows 1:41 Eyebrow Windows 4:22 Construction 16:00 Hydrophobic Coating 19:45 Window Heat 49:48 Fringe Patterns 55:24 Window #2 1:06:24 Sun Visors 1:07:18 Window Problems 1:30:30 Frame Cracks 1:32:10 QRH Procedures 1:38:20 Passenger Windows 1:45:25 Miscell...
737 Lights
zhlédnutí 11KPřed 11 měsíci
This video covers the many lighting systems on the Boeing 737. Contents: 1:01 External Lights - Operated from the flightdeck 34:15 Service Compartment Lighting 38:14 Flightdeck Lighting 49:14 Electrical Power, Light Testing, Replacing Bulbs & the MEL 1:02:22 Cabin Lighting 1:07:27 Emergency Lighting 1:20:54 Circuit Breakers
737 Rudder Story
zhlédnutí 27KPřed rokem
In this video I explain the rudder issues that beset the 737 in the 1990s. I take you through the accidents, investigations, contrasting opinions, design changes and the many QRH changes that the 737 rudder system has gone through, that all started with two mysterious accidents in the early 1990s for which no conclusive evidence was ever found. I also explain how those events led to a complete ...
737 P8 Poseidon
zhlédnutí 15KPřed rokem
This is a detailed description of the P-8A Poseidon. It covers both external and internal features, flightdeck differences from the 737NG and all known derivatives & increments. Contents: 1:28 History & Development 11:56 External features 36:32 Main Instrument Panels 44:12 Aft Electronic Panel 58:20 Aft Overhead Panel 1:03:11 Main Overhead Panel 1:19:31 Vulnerability Reduction features 1:23:39 ...
737 Alternate Forward Center of Gravity Option
zhlédnutí 8KPřed rokem
This video describes the theory and practical application of the Alternate Forward Center of Gravity option for the 737 NG and MAX. Contents: 1:08 Introduction 2:27 Theory 12:00 Series Differences 18:15 In Practice 20:27 Choosing Limit Positions 30:01 OPT Configuration 32:40 OPT Examples 42:25 FMC Speeds
737 Freighters
zhlédnutí 9KPřed rokem
This video describes the history and development of Boeing 737 freighters from the 737-200C through to the 737-800BCF. It also covers all third-party conversions by AEI, Pemco and IAI, describing the specific technical and operational differences between cargo 737s and passenger versions. Contents: 1:53 Versions 21:11 Economics 32:47 Converters 43:19 Differences from Pax Aircraft 1:09:06 Main C...
737 BBJ
zhlédnutí 8KPřed rokem
This video describes the history and development of the Boeing Business Jet (BBJ), its unique features and differences from regular airline 737s. Contents: 0:52 History 4:48 Versions 14:05 Differences from NG / MAX 15:45 Completion 24:17 Winglets 34:22 Performance 41:51 Cabin Interior 50:35 Comms / IFE 1:03:11 Fuel 1:14:20 Air Systems 1:19:44 HUD/EVS 1:24:33 FMC Options
737 PSEU
zhlédnutí 18KPřed rokem
A detailed description of the Proximity Switch Electronic Unit and air-ground systems on the 737. (Updated) Contents: 2:51 Background 6:23 PSEU 11:35 SPSEU 16:04 MAX Differences 21:48 Proximity Sensors 27:35 Air-ground 37:32 Airstairs control & warning 38:10 Door warnings & flightlocks 39:57 LGTU 41:21 Take-off & landing configuration warnings 42:18 Landing gear position indicating and warning ...
737 CVR, FDR, ELT, LF-ULB, DFDAU and QAR
zhlédnutí 14KPřed 2 lety
737 CVR, FDR, ELT, LF-ULB, DFDAU and QAR
All this information will be excellent for practicing failures in the home simulator lol.
Home sim, actual sim or the real aircraft
Whenever I watch this video, I am amazed how Cpt. Chris Brady (with his nice white shirt) manages not to get dirty in this dirty environment 😂 thank you so much Cpt. Chris Brady, your videos, website etc are the best source of information for B737 pilots
Teflon coated shirts are a wonderful thing 😂 Glad you enjoyed the videos 👍
I work for one of the avionics manufacturers, interesting to see where some of our components live.
Great to hear that the video was useful 👍
Hi Chris, very informative series. I have a question. I have seen for an APU start, that if you first move the switch to the on position for a short period, then move it to the start position, you get a much quicker start. I haven't found an explanation for this anywhere. Do you know why this is? I assume that its bad for the service life of the APU as well? Thanks
Good Evening Captain..Just one question..why RUDDER is connented to SYB system , where as AILERON and ELEVATOR are not...
I can't thank you enough sir. Junior Engineer here taking serious notes. Much obliged
You are very welcome, thanks for watching
FYI As I understand GPS sats are unlikely to orbit decay and fall back to earth anytime soon as they are in MEO (medium earth orbit) and it would take quite a while to do so >100 years. Old GPS sats may be placed in a "graveyard orbit" when they fail / run low on fuel.
Chris, Fantastic videos. I would like some insight (if you have any) on a topic that comes up during the upgrade interview. Overweight (by a few 000 kgs) autoland risks. Naturally the aircraft should be able to do it, but is there any sort of documentation on what the gear can actually handle? The context is having to land due to a passenger requiring immediate medical attention in CATII/CATIII weather. Thanks! (read the FCTM paragraphs on overweight and autoland overweight, still vague!)
Fantastic. Learned alot
Another great video. Thanks Chris
Glad you enjoyed it
Hi chris, random question about 737NG vs max. In the max variant you have the equipment smoke light so in case of fire or smoke its very clear where the source is and u just run the NNC for that, in theNG series theres no such thing so what do you do just run the smoke fire n fumes checklist ? Theres no way of knowing if source is avionics bay in the NG how do u deal with this and more importantly how are aware of the fact that u have a smoke source in ur avionics bay in NG series ? Or is there no way to know cheers. Keep up the amazing videos
Hello sir, I'm a student and still familiarizing my self with boieng 737, and i don't know how to thank you for you have been of great help to me,
You are most welcome
Thanks, a learn a lot, will you mind explain how to change Wills and breaks ,
I am a pilot not an engineer so I can’t help with that information. Try asking on the 737 Technical Group on FB
May I know where can I find the schematics that is shown at 02:00?
This is taken from my book, The Boeing 737 Technical Guide available here www.b737.org.uk/book.htm
thank you
You are welcome
Thanks for sharing. Great content.
You are welcome, thanks for watching
Awesome content. Thank you for sharing this.
No problem, glad you found it useful
Sir,your videos are a boon for us . Lots of love from Air India .
You are welcome, thanks for watching!
So, about APU warm up period. Should we start counting this time when we move APU start lever to start or when APU GEN LIGHT comes out?
I am sure that the APU manufacturer would say from when the APU GEN OFF BUS light extinguishes.
@@ChrisBrady737 copied. Apu GEN LIGHT = Chrono start. Thanks a lot
best explanation that i found anywhere else. you are great as ever
Thank you for your kind words and thanks for watching
Hey, i have a question about the Pitot probes being turned off on the ground after landing. If you turn these OFF will it cause a master caution to illuminate or will it stay blank?
The naughty wind noise :(
Yes, sorry!
Thank you for explaining this topic. Greetings from Poland
You are very welcome. Thank you for watching
Thank you Chris for very educational video. It filled up my my mental "puzzle" why airlines don't load airplanes to achieve the most rearward CG. Now i see: they do! The benefits from this load on cruise are obvious, and now i see also benefits for t/o and landings. The key point for me (and you specifically mentioned that) was that performance is given for most FWD CG. So, to take benefits from actual CG position, we have to have approved alternate CG.
UUWW ❤
How does elevator manual reversion work? Is there a direct mechanical linkage / crank between the aft input torque tube and output torque tube? Couldn’t find one on the photo… Or is it that the PCU still transfer the motion, just not not magnifying the force hydraulically? Thanks anyone for an answer! And mega thanks to you Chris, I’m studying for my TR and your videos with all the extra stories are so So helpful ! :)
+1
+1
Hello Chris, thank you for the excellent information. I am a trainer on the 737 in Canada. Our Max’s do have an optional installed dc fuel pump. My understanding is this is a requirement for the APU on condition ETOPS certification we have. We do not need to run the APU during ETOPS as long as the fleet meets reliability parameters. Thanks!
+1
Soviet Front? Chris that term would no longer be appropriate, although I understand why you used it, it has to be Russian Federation now. Excellent presentation as always, thanks.
You are correct, I was showing my age!
+1
Great explanations - learned lots. Let’s me think weather boing will roll some of the MAX10 enhancements into the BBJ series allowing for greater weights and range. And possibly Airbus giving its ACJ the XLR enhancements at 319 length.. Ranges into the 7500nm ranges would rival the latest gen biz jets
There is now a FOTB 737 24-01 for 737 Max with Hybrid GPS-Inertial enabled..!
Excellent news
Thank you so much for an in-depth video. I'm a 3D graphic artist needing to make a computer animation of the 737 MAX in flight and I was really curious about where the various position and strobe lights are. I was quite baffled about the aft position lights especially because the MAX has them placed completely differently than the other 737s. This explains it perfectly.
Glad to help
Awesome video Chris. Am I right to assume the increased landing distance for an SFP (vs. non SFP) aircraft for a Flaps Up event can be attributed to the Speed Brake limit stop on landing?
I think you answered your own question as to why NGS isn't operative on Ground , It requires ram air cooling , It might be very hard to keep the system cool without Ram Air.
Very possibly
With over 20,000 hours flying the 737. I like to keep my technical knowledge sharp and current. I find your videos excellent. Thank you for all your hard work and effort.
You are very welcome, thank you.
Thank you so much 🎉
You are very welcome
Very interesting. Can I ask if there’s smoke why move to oxygen only on the FD? 100% oxygen creates more explosive environment. Is it purely because no supply of clean air other than the oxygen bottle. (Careful to differentiate between air and oxygen!)- is use of oxygen just to make best use of cylinder capacity ?
My friend is a 787 pilot who flies Europe/Far East and spoofing is a regular fact of life. GPWS warnings at FL41. The clouds of war are gathering.
Excellent as usual. Thanks for including the systems information at the start of the video. How can I know if the hybrid GPS is installed in an aircraft or not? If the IRS align without the need to enter a position, does it then mean it is installed?
Yes, self aligning is the way you identify hybrid GPS
Will you you be doing a presentation on the E-7A Wedgetail?
I don’t have enough data on it to justify a video. Much of the info is already in the P8 video though
@@ChrisBrady737 that’s a shame. There’s considerable differences between the P8 and E-7A but I guess largely a lot of systems are the same. Effectively the E-7A is just a BBJ with larger generators and some other additions.
Thank you so much for the hard work and care given for each video. A treasure vault for b737 newbies! Book has been purchased!
You are welcome, thanks for watching and for getting a copy of the book 🙏
After watching a lot of captain Chris it’s safe to say I’m fully type rated on the 737 🤣🤣
Glad to help 😂
@@ChrisBrady737 are you on instagram capt Chris ??
@@ChrisBrady737 captain Chris how many hours does it take someone to be a captain on a 737. Direct from flight school with about 300-350 hours for example
@@CFJ_5N it depends on your previous experience and which airline you are with and how fast that airline is expanding. Typically it can can 5-10 years as an F/O before becoming a Captain. In my case it only took 2 years but I had several thousand hours of previous non-airline experience.
@@ChrisBrady737 oh okay I understand captain Chris but is there a certain flying hour mark you have to reach to be a captain on the 737 maybe 5000 or above ? And considering you don’t have any previous jet experience just from flight school to 737
That PULL UP alert over Iraq is frankly scary. Great detail - I thought I was fairly familiar with basic GPS Interference. Now I feel I know nothing but have learnt a lot. Thanks Chris
Agreed, but it would be even more scary if you were anywhere near MSA! Greta to hear that you found the video useful.
Interesting navigation interference event. In an aircraft with a very similar FMS, going into one of the areas concerned, experienced an actual position shift (ND Map Shift; UNABLE RNP with ANP >15nm; EGPWS and ATC/ADS-B issues, naturally) approximately 10 minutes after GPS Updating was selected OFF during the Descent/Approach briefing (VOR, DME and LOC Updating all ON). As we were on the STAR, there was (unfortunately) no time to gather more information; requested vectors until ANP had reduced below RNP. LNAV reselected, the approach and landing were uneventful. It’s still unclear to me why/how this could happen with GPS Updating OFF prior the interference event unless there is radio spoofing occurring also, which “sends the investigation in a whole new direction” when we discuss mitigation strategies.
I laughed a lot at the Darth Vader impersonation 😂
😂
Hello Captain I had a question if you could kindly help me. In max, when we are doing the extended motoring of the engine 5 mins of wait and 5 mins of starter usage say due to a hot start where the EGT has not exceeded the limit, due protection and the starter usage was more than 3mins. What are we to do if the starter takes more than 5 mins to start the engine in the second attempt as it says 5 min of wait followed by 5 min of starter usage. Thank you.
Please ask any questions here facebook.com/groups/737tech
I'm a pilot based in Russia, and we encounter this issue daily. Thank you very much for such a detailed explanation. You are doing amazing work!
My pleasure, glad to help your understanding.