Avoiding Traffic Then Disappearing From RADAR | ADC Flight 086
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- เผยแพร่เมื่อ 28 มิ.ย. 2024
- Early evening on 7th November 1996, Aviation Development Company’s Flight 086 - a Boeing 727-231 was en route from Port Harcourt Airport to Murtala Muhammed International Airport in Lagos, Nigeria. After establishing contact with Lagos radar, the aircraft was cleared to descend to flight level 50 (5000 feet above mean sea level) and instructed to maintain a heading of 300. The flight then reported “traffic” and that it was continuing its right turn to heading 330 for traffic avoidance.
This was the last transmission the aircraft made, shortly after, the aircraft disappeared from the radar scope. It was not until 24 hours later that the wreckage of flight ADK086 was found in the Lagos Lagoon. There were no survivors, very few eyewitness reports, and the crash site hinted at such a great impact as there was no large pieces of the aircraft remaining.
So what exactly happened to bring this Boeing 727 aircraft with 144 people on board out of the sky?
That’s what we’re going to find out today...
Final Report: aib.gov.ng/wp-content/uploads...
** ADC airlines flight 086 is referred to as ADK086 during this video, as that was its call sign.
![[MIRRORED] LISA - ROCKSTAR 🎸 MV version #LISA #BLACKPINK #ROCKSTAR](http://i.ytimg.com/vi/-U58DuCCtZk/mqdefault.jpg)
We pilots learn very early in our flight training that when the aircraft is banked in a turn, pulling to raise the nose ALWAYS steepens the bank. If you are descending too fast in a bank, REDUCE the bank angle, and get the wings flying again, then pull....
Therefore not only was the ATC at fault, but there was poor/indequate pilot training. Remind me to avoid flying to Nigeria any time soon...
I concur. It seems to me that this pilot was in a panic. Instincts are not always rational in a panic situation.
@@KenFullmanright. Everybody has a plan til they get punched in the face … 🥊
Covering lesser known accidents makes your channel unique to me. Thank you and keep up the great work.
That's great, I do try to find the incidents the 'bigger' channels haven't covered already. I'm glad you are enjoying them!
I remember it well as this crash killed my General Manager. In the ensuing 27-years since the crash this is the 1st time I have read the horrific details of the tragedy. As sad a story as this is, let me mention a few other details that I cannot erase from my memory.
Pre-mobile phones, domestic communications were so poor that I had to ask the General Manager of Shell if I could use his direct line to Lagos to get any news of my GM's whereabouts. At the time, there was a thriving black market in seats on domestic flights. If you needed a seat at short notice, there was a guy in the airport with a fistfull of tickets with random names on them. Despite mobilising a Diving Vessel onto the lagoon no wreckage or bodies were ever found and the nearest the family of my GM got to closure was to cast a wreath onto the lagoon from a small boat, a couple of weeks later.
Gone, but not forgotten ...R.I.P. John Ingham.
Gee, corrupt people in Africa. I am shocked.
The guys name was Richard who supplied the tickets... I think he's still there. Knew other shell staff on that flight.. it's sad seeing someone and less than 4 hours after, they are gone. Folks were told the hull was buried under the mud in the lagoon, it seems it totally shattered.
It doesn't mention in the video that the aircraft was meant to fly early morning from Lagos to PH but was cancelled due a tech issue. I know this because my manager and I were meant to be on it. We caught a later flight down to PH. The aircraft then flew empty to PH to carry out the return leg. My back to back was meant to be on the return flight but fortunately changed his flight. We never knee he'd changed his flight until much later because as you mentioned communication was very difficult in Nigeria at that time.
My father was also on this flight. Mark H. Waters. please reach out to me and we can share stories and information about the flight.
I can only guess that you were quite young when your father perished in ADC Flight 086. I was in my mid-40's at the time and only some 6-months into what turned out to be a near 10-year stint in Nigeria. Although my connection with the ADC Flight was entirely peripheral, further tragic consequences were to follow, a few weeks later. Now into my early 70's and happily living in South Korea for 20-years, I am only too happy to reflect on those days.@@jlw025
The fact this aircraft experienced +8G without breaking up before impact says a lot about Boeings engineering
Decades ago before the MBAs took over.
Once any pilot manoeuvres the aircraft beyond it’s critical angle of attack at any speed it’s like kicking the only leg out of a one legged pirate…you will drop like a rock.😢
its like throwing a Frisbee with no spin.
An unusual analogy but a good one.
Spiral dive! When in a spiral dive, you must NOT pull back - it only tightens the turn. "Power back to idle to reduce rate of descent. Roll wings level using ADI. NOW pull hard. When 'little bird' well into the blue on ADI, full power." I have done it in heavy cloud. Terrifying. My RAF training saved me. Best training; treated us with respect. Once we were warriors!
An incident I hadn’t heard of - this is one of the enjoyable things about this channel, as it often covers the lesser known mishaps. A very professional delivery, when I see a new video from Curious Pilot I watch it straight away. I believe your subscribers will increase quite quickly once people have watched one of your videos.
Thank you, that’s nice to hear! I really want this channel to succeed. I think my biggest hurdle is consistency of uploads, currently I can only get one out every two weeks. That is stretch sometimes too! I need to find a way to streamline the process then pray to the TH-cam algorithm for access to the people 😁
@@CuriousPilot90yes your content is top notch and it's a popular subject matter too. Give it a go curious pilot. You have a shot.
Well it would be weird if subs increase before people watch the videos
I didn't even start watching and I subbed as I don't remember this one and I've seen them all.. I like your narration this far. Thanks!
Sadly I knew a good family friend on this flight.
Very tragic story of an accident that could have been avoided if the controller was paying attention to his radar. Great job describing the events that led up to this tragic accident.
It is crazy how quickly these events can happen. Maintaining standard separation was key. But people do make mistakes, I find it interesting to discover how people react when things go wrong. It’s very helpful for both people within aviation and those interested in human behaviour. Thanks James, I got a bit carried away with my reply then.😁
@@CuriousPilot90 You spent way too much time blaming the controllers. You put a competent pilot in that cockpit and this is a non-event.
Really crazy, stall in the manoeuvre, when you think of a stall you almost always think of slow speed, high nose. But like in this a high G turn even at high speed can still cause the airflow to detach from the wings. Very interesting incident. Thank you for making this.
something that sadly not every pilot understands is that the only thing that dictates if you're stalled or not is the critical AOA. Speed is just an easy way to see when you're at that AOA but it's not always that easy
Always keep the "ball" (Inclinometer) centered.
There is another crash albeit at lower speeds that is similar to this loss of lift while making a to steep turn, it was of a large B-52 airforce plane on an airshow in 1994, speed was below the stall speed for the angle they flew at: th-cam.com/video/7-S_NM--evM/w-d-xo.html
@@thegoalie5233 Load factor is critical in this situation. you can stall at any speed.
@@antoniobranch won't make any difference in stall. But to avoid a spin, maybe.
I've flown 727-231's before and they are a pain in the ass. Howard Hughes [owner of TWA at the time] dictated a bunch of stupid stuff, such as the light switches operating the opposite way. Normally you turn on the lights on the overhead panel by pushing forward; On TWA airplanes you turned them on by pulling backwards. That and the hydraulic controls were on the instrument panel as opposed to the normal place on the flight engineers panel.
I hated those airplanes!
Interesting, I hadn't heard about those... We had some ex- Canadian 727-200's in our fleet with the long range tank in the bellies... was actually useful as you could use it instead of a ballast pallet on ferry legs.... :)
@@PRH123 Interesting. We had one of those at Express One, with the aux tank in the forward baggage compartment. We flew it domestically, so we never used it. I can't remember if it even worked, but I remember seeing it in there when they had the door open.
@@Flies2FLL if I recall correctly it was a MEL item on those tail numbers so it should have been operational…. but it was a long time ago :)
Interesting how the director’s desires could affect operations…. ours had served in the marines, and so all of our flights around the world were supposed to be marshaled with us navy signals, which are different…. ok on our own ramps, but we didn’t have much luck getting vendor ramps to comply…. :)
@@PRH123 Yes, I can understand that-
Boeing has never produced an aircraft as beautiful, elegant, and sleek looking, as the Boeing 727! The clean wings, and aggressively swept back T-tail are the best.
Can you cover Saudia flight 163 please
I’ll take a look 👍🏼
I've never seen a video format like yours, it makes it so much easier to imagine how the incident occured. Please continue doing this, i'm sure you'll win big in the future
Thank you, I'm glad you enjoyed it.
@@CuriousPilot90 ps i binged all your investigation videos so pls make more :D
Very nicely organized and clean channel…that includes the narration, grammar, nomenclature, break-downs for layman viewers and narrator´s consistent voice pitch modulation. Must add that as a professional illustrator, the visuals are really top notch, from 3D to diagrams. Nice work on your channel, subscribing.
Thank you Jonathan, I appreciate that!
Very sad story but very well told, thanks again for another great video!
Thank you
Got this video in the recommendations and after the first minute of watching I can say that you have earned a subscriber already, really good job sir. I hope you see a boost soon best of luck
Heavy sigh 😕 .....from bad to worse. Flying is such a skill and I have massive respect for those that do this for a living, that said its sad when you cant or are unable to compute physics into actions when it comes to accidents such as these. RIP to all 😢😢😢
Third video of Curious Pilot I've watched. Very impressed.
When they designed TCAS they could have included a roll or turn recommendation but realised it was unnecessary. Vertical separation is the most important and therefore just do as your told and climb or descend.
Then they made MCAS, and fucked EVERYTHING up
I lost a work colleague and best friend aboard this flight at the time and I was selected to go and inform his father. It was traumatic and I appreciate you letting me know how this accident happened. Jide Sotande, Rest In Peace.
My condolences to u ❤🫂❤️
So, if I understand correctly the PIC cranked this 727 over so hard that he stalled it and it spun out of control and crashed. Moreover, he did so with three other experienced pilots in the cockpit observing him. Unbelievable! On the face of it it appears that NONE of these pilots understood the limitations of the aircraft or understood how dangerous the situation was as the bank deepened. How is that possible? Whatever the case, excellent work on your part!
Affirmative action flight school.
Those are the kinds of situations that CRM training addresses... but if the whole incident occurred in seconds, there would have been no time to voice concerns...
I've jumpseated in a 727 with the pilot in full IMC working the yoke from stop to stop and manhandling the thrust like a motorcycle to keep up with ATC's instructions... he was an old fighter jockey and the first officer wet behind the ears... who would - could - should have held their hand up and said....? easy for us to judge sitting here....
@@PRH123Sounds like the kind of pilot who knew where another aircraft would be in the next half second and also by how much he was going to miss it by 10 seconds on.
But for a computer aboard a commercial jet able to track an object on a curving path in 3D and compare it with two others is _ well it might be possible with today's technology.
I used the example of 2 others because one might be the side of a mountain. I suspect the F-35 can manage multiple.
@@billsheehy1Yeah right. Like Air France 447??
good vid hadn't heard of that one
Terrifying last moments for sure
Puzzled why the crew failed to respond to the RA. RAs only ever give us avoidance manoeuvres based on 'Climb' or 'Descend'.. not heading changes, simply seeing another aircraft and turning to avoid may or may not have the desired result, turning takes far longer and is more difficult to assess as sufficient for avoidance than applying pitch either up or down.
This seems like an old incident but I would have thought that the controllers instruments would have a pre-emptive collision avoidance alert themselves watching all nearby planes height and course. I had a funny feeling it would be the controller when you first said he did not respond to a FL request. But that is also a rookie mistake by the pilot flying - very early flight school mistake. Thanks again for wonderful explanation. Looking forward to your future ones.
Thanks!
Thank you Antonio, it is appreciated! 😁
I noticed there was no mention of what the other plane was doing. Did it get a warning? Did it see flight 086?
Probably, the other plane's pilots saw nothing. I'm very surprised anyone did, because the speeds involved mean the relative speed of one to another is that of a bullet, a point turned a plane and passed by or crashed into in an instant.
Last heard in the cabin: "Gee mom, were flying like a fighter jet".
Very good explanation, sad!
Wow, hadn't heard of this incident, thanks for a great video!
Seems to be some confusion between 300 degrees, and 330 !!
Never knew of this, thank you for covering this, and so well. I love this av-channel !
Hello, just wondering if you can make a video about Tarom Flight 371 or 1980 Tarom crash
good work
Great video.
This Is Africa...
These guys were McKnuckleheads~
Great video! I've got a suggestion, could you cover the Madeira plane incident. It was a runway run off (I think it's called) and there's only been one plane crash on the Island I believe. Thank you for another well told video!
Thank you. I’ll take a look 🙂
Thankyou for this one! Very interesting!
Thank you
Very good video. I like the 727s
Never knew about this incident. Great video. And the entered an accelerated stall.
Well done for finding more and different content once again. Just a word though - and the word is Lagos as in Laygos, and not Laggos. Just thought you'd like to know (-;)~
Thank you, and always good to hear. 😁
Thank you for your wonderful talks. It is good to hear a sensible Russian commentator. And have a good break! Best from South Africa.
Enjoy your videos fella. Another good one here. No irritating background music or sound effects. But yes (not a massive issue) your pronounciation (actually pro nun ciaton) is sometimes a bit off
Lagos is (sounds like 'Lay...gos')
Google translate can help 👍🏼
All the best 🇬🇧
proud nigerian
How far the two plane passed each other? Could the turbulence of the other 727 play any role in this incident? 3 pilots overlooking the flight envelope sounds strange...but I am not a pilot.
It is a sad story for such a beautiful aircraft of its time. My 727 flight was a smooth one in 1998 in the USA nd still today I like the model to see . Greetings from the Nethjerlands by Arie Bert Versteeg ;-)
The aircraft seemed pretty stupid in its design according to me with all its 3 engines at the tail-end.
@@Pakistanicecream-z1x Stupid design? It was the era of several degigns of 3-engines aircraft all over Western aircraft industries. Hawker Siddely Trident is a very good example during the sixties (weak British competitor of the 727) and waht about the Russian Tu-154 with its typical lines? Later the wide body jets DC -10, L-1011 and the later MD - 11 were also 3-engines jets. The modern designs of Airbus are less interesting to me, but it is a matter of taste. Thank you for your response!
I wish an explanation was given as to why the separation caused the crash. Wake turbulence? Aircraft became uncontrollable due to extreme evasion maneuvers and why, etc.
Wake turbulence varies with size and speed of aircraft. I imagine that minimum separation distance and time will also vary. Would an early 727 be programmed for a near encounter with a 747?
There is prolonged turbulence at airports after the big planes leave.
Unqualified or poorly trained persons managing key sensitive offices in Nigeria has been a cancer to the country, and almost 30yrs down the line, nothing has changed. If the ATC did his job the right way all this would have been avoidable.
R.I.P to the deceased
As a Nigerian, your pronoun citation of Lagos has actually stressed me out lol 😂 but great video and an incident I hadn’t heard of - thanks!
The BBC radio news generally say, "Lay-gos".
Acceptable?
NP, experiencing Nigerians attempt English has GREATLY sltressed ne out.
I am curious to know if Airbus protection envelopes would have prevented the pilot from over-stressing the plane?
As long as the protection systems are operational ( called alpha floor protection) you can not stall, overbank, overspeed an Airbus A320/321/330/340/350/380.
@@BOEINGMAX-nn6ku Yeah, that's what I thought. I know Airbus designs are not perfect, but in this case, had they been flying an Airbus model this crash would not have occurred.
I had heard this story before but didn't know the airline nor the flight number, thank you for uploading.
Reminds me of TWA flight 841 where a 727 cruising at 39,000 feet most likely suffered a lower rudder hardover that sent it into a dive and they broke the speed of sound. The pilots recovered the airplane at a very low altitude after dropping the landing gear which ruptured System A hydraulics and centered the lower rudder. After safely landing the airplane the pilots were made scapegoats and the investigators concluded they caused the dive by messing around with the flaps in cruise. They were so tunnel visioned on what they felt caused the dive that they discounted the pilots and most passengers' sworn testimonies very early on.
Would love to see an episode on that flight.
Very interesting on that 727 incident - I remember …
Great video... You're pretty thorough about getting all the details straight and still keeping it engaging and simple enough to digest... not a whole lot of jargon or "technical gobbledygook"...
I don't know if you'll want to do an April Fool's Day or some other holiday of it... BUT on the "lighter side" of questionable aviation misadventures, you COULD visit Doug Corrigan's famous flight to Ireland. He swore to his dying day that his compass was broken, which could "theoretically" indicate he's either the luckiest pilot in history or one of the best "instinctive navigators" to ever live... BUT considering he supposedly intended to land in California rather than Ireland at the time... it's another historical (or hysterical) moment in aviation that remains "questionable at best"... AND best of all, we can laugh at it SHAMELESSLY since "everybody lived to walk away"... which is still sort of rare at the level of aviator f*ck-up that it seems to represent.
Enjoy a look-see, either way... ;o)
Thank you, that’s what I’m aiming for! Plus I’ll take a look, it will be nice for a lighter hearted video every now and then.
@@CuriousPilot90 Well, you won't be disappointed in the story of Douglas "Wrong Way" Corrigan, then... I promise! ;o)
@@gnarthdarkanen7464 Great job of telling the just enough of the story without giving up the best part about old wrong Corrigans flight.
@@chrish931 Thank YOU... and of course, Thanks for reading...
I'd just hope I gave up enough to intrigue and not so much that anyone might be disappointed when they "quick Scroogle" to find out what the actual f*** I'm on about...
Whether you already knew or spent the 2 minutes to get some juicy details, I hope it was worthy of a good chuckle!
From my slide down the rabbit-hole, that story just seemed to keep on giving and Giving and GIVING... There just seems no end of little side stories even years after the flight about someone's run-in with Doug... so... I wish everyone "Good Hunting"! ;o)
@@gnarthdarkanen7464 I had heard about him, my grand father was a crew chief in the pacific during WW2 on a B-29, and my father was a radio man in the air force so I heard lots of aviation stories as a kid. I heard about Wrong Way Corrigan growing up and found it to be a fascinating story.
Why has the plane flow disturbors at its vertical fin? (@2:08) To keep rudder authority at high mach? Avoiding mach shock separation at the rudder?
omg!!
had the planes collided, that could have been so much worse
I first heard of this accident from Mauricio PC’s video when he simulated this accident. When I searched for ADC Flight 086 in TH-cam, there was no other video relating to this accident.
Was the controller held accountable?
This is so bad 😢
Since 96 i just heard how this adc crashed
Did the 727s not have envelope protections of any kind? Artificial feel, travel limiter, warning, etc?
Dominicana DC-9 air disaster i have never seen any1 cover this accident and would love if you could
I'll take a look.
Space Shuttle crews only experienced just over 3’s at launch. I don’t know about other launch vehicles, but 6 g’s sounds a little high.
This plane looks like a DC instead of a Boeing imo. Rip to all who lost their lives 🙏🏾 ❤
isnt it ADC not ADK or am i hearing things
Despite the other contributing factors, if the pilot knew how to maneuver the airplane properly it would not have crashed.
Yeah, WTF happened? The guy just lost control of his aircraft for no good reason??
@@lebojay No reason at all is indicated, so the explanation we are left with is lack of skill. Even back then airline pilots practiced steep turns, so how could he not manage that. It boggles the mind.
@@gort8203 Easy to say in retrospect
@@MrCyberboi Yes, it was no trouble at all. Perhaps you prefer to believe that what were minor contributing factors bear more responsibility for this crash than the missing skill that should have prevented it. That does not serve the cause of aviation safety.
@@gort8203 I am not speaking from a point of believe but of knowledge
thank you for this video....please advise me what happened to the air china vertical dive-crush? any investigation had terminated?do you have a video about this investigation?thanks again.....
Curious why a 250NM flight took 90min. We're talkin' about a 727 (one of the fastest commercial aircraft ever built) flying at an avg speed of 145mph or 167kt. Unless the 90min inc.l ground time, it doesn't equate. 🤔
Flight is normally 45min - 50mins, quoted time is incorrect. recalled this day, was heartbreaking
👍
Belview airlines (lagos-abuja) crash 2006.
My aunt and her husband were in it. I've been looking for a link to a report or crash investigation video. Any ideas where to find it??
That's the report:
aib.gov.ng/wp-content/uploads/2019/09/2-2009-blv-2005-10-22-f.pdf
crappy pilots.....a lot of those out there
Jeeeez, 8G??
1st comment, Watching now...
LAY-GOS
Once you increase the turn angle, you are doomed.
Great video as always! 1 question: why do you keep saying "K" instead of "C"? ADC, ICAO, etc. You say ADK and IKAO.
Thanks Jon. Good point, I wasn’t too clear at the start. ADK 086 was its call sign.
@@CuriousPilot90 haha oh wow, here I was theorizing all these reasons that were FAR more complicated in my head!
Just to nitpick for the sticklers out there, FL 50 is a pressure altitude that is not necessarily 5,000 ft. above mean sea level. To fly MSL you have to set your altimeter to the local barometric setting (QNH). To fly at a flight level you set QNE or standard atmosphere. The transition from flight levels to MSL altitudes varies within each flight information region.
That’s true, 1013.2hPa is also an average mean sea level pressure setting. So the altitude will vary depending on the actual pressure. I try to keep things as simple as possible for those less aware of the details. What I am actually trying to say is that FL’X’ is similar to ‘X’ thousand feet, so that the viewer is aware of the connection.
@@CuriousPilot90 I assumed you were just trying to keep it simple, but my sense is that this distinction is one which all but the most casual viewer would like to know.
What in the actual hell were they doing?
Good question !
Must have been terrifying for the passengers. RIP.
Small point . . . . . It's pronounced LAYGOSS and not LAG OSS.
41m elevation 10km land inwards is queit high in that marsh landscape? The Netherlands would be very happy with 50% 41NAP or higher. Now 50%
It doesn't make sense that a turn caused them to forget how to fly a plane. If you stall you have to point the nose down and hope you have enough height to recover.
Never heard of flight level 50. I thought it is only applicable for Class A airspace.
The transition level varies around the world, for the US and Canada it is a standard 18,000ft. You wouldn't hear FL50 there.
@@CuriousPilot90 I see. Never fly anywhere else than the continental US.
Incompetence stikes again!
Lagos . . . . LAYGOS
250nm in 90 minutes?
These big aircraft need to keep their wings near level to maintain lift. I'm not a pilot and i can figure this out.
They woulda hopefully have been knocked out because of the G forces involved. I'm fairly certain that the human body wouldn't be able to handle that.
That was probably the case.
Correct me if I am mistaken . . . Wasn't the 727
Excuse my fat fingers
Wasn't the 727 the last Boeing to have a Speed ball on the instrument cluster?
Flight duration Port Harcourt to Lagos maximum 1hr 10mins jet time.
And it's pronounced "Lay-gos".
@@Shamrock100and to make it more clear for anyone who might pronounce the "gos" the same as the word "goes", it's pronounced "guss", like in the words "gust" and "gossip"
45 mins flying time
Praise Gesus
Where the hell is Laggos? If you're talking about Nigeria, it's "Lay-gos".
The pilot thought he was flying in a f16.....
My Nigerian Director was on this flight,..they never found him.
Fatídic course of fate with fatalities caused by fatalistic and fatally flawed flier.
But what happened to cause the pilot to mishandle the plane so badly?
More like what didn't happen, which was adequate prior training and experience in the handling of airplanes.
@@gort8203 Yes … I’d like to hear more about this pilot’s training, and training in general at that airline, and in that country.
I believe something happened that caused that roll. Makes no sense they were calm and relaxed. Old aircraft maybe something broke during the turn.
@@spikenomoon How do you know they were clam and relaxed? You must be joking. They were probably not so calm and relaxed after TCAS alerts plus a visual sighting of conflicting traffic that caused an increase in turn rate to avoid hitting it. I'm sure those were the least calm moments of their short flight.
There is no reason to suspect anything broke, at least before they overstressed the airplane. I could speculate as to what distracted the pilot(s) from maintaining aircraft control, but distraction does not excuse the failure.
Another thing to mention is that the claim that the aircraft was "uncoordinated" when the bank angle steepened is probably inaccurate and has nothing to do with the reason the nose dropped. This channel likes to simplify aviation terminology for the audience, but oversimplification becomes inaccuracy. The airplane has a full-time yaw damper that serves to coordinate turns, and even if it was inoperative and the pilot failed to use the rudder it would not prevent him from controlling the bank angle with ailerons and spoilers. A steep bank angle does not mean the turn is uncoordinated, it just means you to have to produce more lift to hold the nose up.
8g gesus
ADC or ADK?
You mean 5,000 feet ASL? The flight levels don't start until 18,000 feet ASL.
In the USA and Canada they start at 18,000 feet but it differs for the rest of the world.
Jeff Hardy went too far this time!
I can not imagine sitting in there (cursing the pilots) helpless as they ready to kill me.
What happened with the Controller? Pilots should know the limits.