Boeing 747 Takeoff CONFIGURATION WARNING

Hello everyone- how do you do. In todays video, I show you the warnings we would get on the Boeing 747-400 and the 8 if the configuration was not correct for takeoff. Airliner development has gone through several stages in the last 50 years. Early model aircraft for example did not have the takeoff configuration warning systems fitted because they had not been developed yet. There were accidents where procedures were not strictly adhered to and Flaps were not set correctly or stabiliser was not set correctly. In some incidents, the flaps were forgotten completely!
The Boeing 747 (similar to all modern aircraft)has a configuration warning system to alert pilots of an incorrect configuration. It would mean rejecting the takeoff and recalculating the speeds etc. The first part of the video is on the B747-400 and I’ve tagged on a second part which is in the B747-8.
Hope it all makes sense- I’ve put my usual captions so you can follow the actions taking place. Hope you like it. ‘Chi Di Gin! Later!😀✈️✈️✈️✈️

[@goodo5691]

honestly..you make the best vids for aviation enthusiasts

[@pilot_obet7815]

Thanks

[@abduljabar8445]

Not only for enthusiast but also for professional pilots too.

[@83newyorker]

"Once again the pilot says oh shit!" 😁 Don't worry I love your videos :). Thanks for all the good work!

[@MartinNeep]

I’d imagine the last config warning is if the speedbrakes aren’t down? Wow, the sound fidelity is noticeably better in the 748 simulator!

[@mark408kk]

I am not a pilot, more of a planespotter, but I mist admit your vidoes have showed me so much knowledge and how easy to follow. Thank You...

[@kalashnikovdabs]

The knowledge I have gained from you has been so helpful thank you so much. Your videos are wonderful.

[@user-oq5lv2zp4s]

I m leaening too even before i start,i m already feeling ahead

[@harrymburu]

Always looking forward for your videos

[@alondon3879]

Great Video as usual. Happy flying.

[@B747-4OO]

All those systems make great sense for a safe TO! The last one is definitely the CONFIG SPOILERS warning. Looking forward to the next video .. LATER! 😎👍

[@charlieinsingapore]

I flew business on one of the last Qantas 747-SP AKL-LAX runs, the pilot had a bit of fun on takeoff - we were stopped with the brakes on while the engines spooled up to full TO. The whole aircraft was bouncing up and down and jerking forward until brakes were released and we were OUTTA THERE! Never been pressed back into my seat like that before or since. Must have been an accidental CONFIG PARK BRK ;)

[@ImperrfectStranger]

I saw the Boeing demo 747SP takeoff from Sydney before Qantas bought them. A similar thing happened and the aircraft, which was almost empty, took off in less than 1/5th of the runway.

[@KingdaToro]

This is just a static takeoff, you do it when the runway is just barely long enough. You hold the brakes on, then release them as soon as the engines reach takeoff thrust. This way, you use up less runway since you're not rolling forward as the engines spool up.

[@rrb6544]

Amazing videos for my avionics maintenance license study, thanks commander!

[@mrnice5245]

As always, Amzaing videos! These vidoes are just so informative and interesting :)

[@Kenny-en7wb]

Very good demonstration..Thank you Captain..

[@annapaolagrandini1052]

Clear, well explained and full of details 👍

[@mejoseph]

Great video on take off configuration.... As usual clear and concise explanation.

[@samal6358]

Stunning as always and so much interesting 🤩… passion at his best 😎🛫

[@pilot_obet7815]

Cheers

[@audioengineeringtips]

thank's learning a lot here

[@OfficialsnaKs]

Great video! I love aviation but the Boeing 747 is really one of my favorites and seeing this makes me glad. Thank you so much ❤

[@pilot_obet7815]

My pleasure

[@Scottcacti]

Love ❤️ your videos 🥂

[@jesperschmidt4948]

You make the best learning videos on the net. Well done Sir 👍

[@pilot_obet7815]

Thank you to you too.

[@akadare1]

Keep them coming captain

[@bahaviation2070]

Great video Captain ;)

[@pilot_obet7815]

Cheers

[@B744ERFJackLoh]

Thank you Captain. I learned a lot from your videos. And I hope you can make another video talking about to cookpit lights, Panel backlights overhead, L, R, many kind of flood light, Map lights… Looking forward to ! Thank you Jack

[@pilot_obet7815]

I have done one before- will share it here

[@B744ERFJackLoh]

@@pilot_obet7815 perfect! Can’t wait. :p

[@mba7454]

Config Spoliers!! On our jet type we also have a Config warning if Aux Fuel transfer system System not in OFF position.

[@ImperrfectStranger]

Interesting to see the CONFIG PARK BRK message has no caret on the 747-8

[@pilot_obet7815]

No caret - correct

[@furzkram]

Bark brake ... woof-woof ... ;-)

[@mugundhann5905]

Lovely presentation with worthful information & for every wrong configuration does the fuel is unnecessarily wasted captain?

[@pilot_obet7815]

Yes- fuel is used

[@mugundhann5905]

Thanks for your reply captain

[@allanben9795]

Hello Captain Obet , which breaks are used during static takeoff ?

[@pilot_obet7815]

Wheel brakes

[@Vee6watchman]

Hong Kong Int'l has both runways at 3800m long. Captain, what runway length would be necessary for a B744/8 at 850k pounds TO weight such that there is No V1(!), would only be necessary to call VR.?

[@Matteo_Sohn]

quick question- does the warning go off when the n1 reaches a certain level, or when the thrust levers are at a certain level? i know on the 737 the alarm will sound when you move the thrust levers to a certain position

[@pilot_obet7815]

Thrust lever position

[@ImperrfectStranger]

According to my 747-400 Engineering Training Notes, the 747-400 warning is based on the either of the inboard engines' N1 exceeding 66.7%N1 on the Rolls Royce engine and 75.0% N1 on the GE engine. The Classic 747 was based on thrust lever position.

[@pilot_obet7815]

@@ImperrfectStranger correct but the N1 or EPR can only achieve those values by thrust lever position….

[@pilot_obet7815]

@@ImperrfectStranger in a way it is both.

[@ImperrfectStranger]

@@pilot_obet7815 True, of course :) On the Classic, you could move the levers with the engine not running and you would get a configuration warning. On the -400, even with the 747-400 EEC Test switches on, powering the EECs, thrust lever movement won't result in any config warnings. It has to be actual N1 rather than commanded thrust (N1 or EPR). And there is not always a direct correlation between commanded EPR (thrust lever position) and N1 on an RR or PW engine.

[@ChristHarry9210]

Wait, that small parking brake lever is what stops a machine of that size?

[@pilot_obet7815]

Not quite- it holds the Brake pedals in place which I have to depress with both feet with force, then pull that lever to hold in place. To release the brakes, I have to use both feet to press hard on top of the pedals to allow the lever to drop and indicate brakes are released

[@ImperrfectStranger]

The CONFIG SPOILERS would have been the most interesting on the 747-400. In theory, you will get it if you only advance thrust lever #2 to takeoff thrust. Otherwise you would have to pull the autospeedbrake circuit breaker on the overhead panel to stop the speedbrake lever automatically stowing before the takeoff warning starts.

[@pilot_obet7815]

Yes because the Speedbrake lever stows with thrust lever advancement anyway😊

[@AviationShots._]

Nice explanation sir!! My question was, if the flap was set to a higher flap setting than what is actually required for takeoff, will it give the same T/O Configuration warning? Because, that too is also incorrect... Will wait for your reply sir! 😊

[@pilot_obet7815]

Yes it will

[@Abdul..]

Sound interested, Then can you explain what the mistake of the Emirates airplane when they crashed on the runway, that flight from India to Dubai. Is the pilot missed the TOGA trigger? Kindly explain.

[@pete9364]

So, let's say there is a runway that is just enaugh for a certain max weight, and all V's calulations are made for 20 flaps. If the pilot makes a mistake to select 10, then thre is no warning, right? But that means that at Vr the a/c wont lift off and after V1 the pilot can legally regect the T/O if the a/c in unfliable when in reality needed maybe around 20kt extra? Not sure how is handled in this situation because I don't fly a 747 but curious if in that case the pilot should keep pushing getting close to the end of the runway to try to take off anyway or overrun at some 160kt instead than 40kt if it was rejected. Thanks

[@vinaypanchal9970]

Sir, do we always take off with TO/GA power?

[@pilot_obet7815]

TOGA is just the switch you activate- the actual thrust is dependent on what you require based on the weight etc on the day. Like an accelerator on a vehicle - you always press on it weather the car is heavy or with only you on board. The amount of acceleration you need is dependent on the weight of the car to get it moving.

[@vinaypanchal9970]

@@pilot_obet7815 ohk, so TOGA doesn't always means 100% power?

[@pilot_obet7815]

Correct! Like an accelerator, pushing the pedal does not mean you are using all the horse power from the vehicle engine - like the toga switches😊

[@vinaypanchal9970]

@@pilot_obet7815 oh, thank you for clarifying I always thought it the other way

[@markcardwell]

Gonna guess cabin pressure or packs????

[@ImperrfectStranger]

CONFIG SPOILER

[@grobbelm]

What actions would lead to pilot dismissal?

[@pilot_obet7815]

Usual- negligence at work etc

[@grobbelm]

@@pilot_obet7815 Thanks Captain. A rejected takeoff due to incorrect flap setting would not lead to dismissal?

[@pilot_obet7815]

Depends on airline. Suspension, pay cut, demotion etc are all used

[@grobbelm]

@@pilot_obet7815 wow, ok, severe, but taking into consideration fuel wastage, pax missing connecting flights, time wastage, probably justified. Thanks for sharing Cap'..

[@haroldorodriques3651]

Olá obet piloto quero dizer a você que pilotar um Jumbo 747.400 é de mais você é um professor de pilotagem receba o meu abraço e respeito OK abraço

[@BigPops757]

Is it the speedbrake arm?

[@ImperrfectStranger]

Speedbrake not down. If the speedbrake was armed on the ground, it would go fully up immediately.

[@MercFE8235]

@@ImperrfectStranger Not without wheel speed to go with it...

[@MercFE8235]

Two more, actually... CONFIG SPOILERS and CONFIG GEAR CTR

[@Peter_Jenner]

Autobrakes not in RTO?

[@pilot_obet7815]

Not required for what I was demonstrating…

[@lenox_omondi]

Hello Captain Obet, I am Lenox from Kenya. I would like to ask for some guidance.

[@pilot_obet7815]

Hi Lenox- what would you like to know

[@lenox_omondi]

@@pilot_obet7815 it's has been my dream to become a pilot with the Cathay Pacific airlines and have researched about the cadet pilot program but I am unable to join (I don't know how to apply) please guide me.

[@user-ix3or1kr6l]

Felicidades, es un buen ejemplo. 339 sentadillas son unos PORNTINDER.Uno muchas y un buen ejercicio. Se deja ver que hay muy buenos resultados 😍👍 Saludos desde la Cd.. de world 🌹😉💖 los mortalesa abian apreciado tan hermosa mujer.k