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Where have all the pilots gone? A sad lament indeed. They have been automated out of existence. I'm afraid there are not many Sullys left in our industry. A man who took an automatic A/C and flew it. There still are a few out there who would have produced the same result given the same circumstances; but not many.
Most of the discussion on this tread has been on how to turn a fool proof A/C into an idiot proof one. Good luck with that. Airlines love these A/C because they no longer need skilled pilots to fly them. They need operators who can program and monitor the systems that actually fly the A/C. Of course they have to be able to taxi, take-off and sometimes land. The latter skill often botched. Hopefully they will also be able to keep the blue side up when the gremlins show up. There has been a lot of discussion about how hand flying is difficult, less safe and increases cockpit work load. Well I quess if you don't feel comfortable with it, these things would be true. It takes a lot of practise to aquire and maintain these skills. Someone suggested here that four sim sessions per year would be adequate!! Can you believe that! Sixty years ago (60) pilots were hand flying their A/C into Tempelhof in all kinds of WX using GCA. I have hand flown into most major US airports and a good number in the rest of the world inluding ORD, LGA, LAX, DFW, MIA, JFK, SFO, well you get the picture. Perfectly normal in my day. You were 100% in the loop and connected to your A/C. Automation is here to stay. It will increase. The trick will be to involve the operator in a more active role than simply as a monitor. IMO the most simple and effective way to do this would be to limit the use of A/T. If the pilot is in charge of thrust he is forced into the loop. There have been suggestions here that all A/P's should use A/T all the time. Nonsense! Just as an aside, when flying in a mountain wave, I used A/B to control A/S rather than thrust. I found this produced a smoother, quieter flight. Ralph |
Just for completeness (ref the airbus accident above). When doing a man land the airbus does not retard the thrust automatically:eek:, it has to be done manually!
If 1 TL is brought to idle it causes the AT to disconnect, the other TL was in the climb position and the thrust on that engine increased up to climb power. |
AnthonyGA - I feel compelled to respond to your ridiculous post. Please tell me exactly what level of experience you have of "running an airline"? Making sweeping statements like: "they [airlines] don't care whether pilots live or die, and they don't even care about the long-term health of the airline" really do not show you up in a favourable
light. A pessimistic view? Yes, absolutely, but also one of someone who clearly has no understanding whatsoever of what is involved in running a successful company. Back you go to MS Flight Sim. |
This implies that if the Airbus was fitted with a RA-operated automatic thrust retard mechanism at 27', the Congonhas A319 would not have retained power on No 2 after landing? |
Originally Posted by Rainboe
This implies that if the Airbus was fitted with a RA-operated automatic thrust retard mechanism at 27', the Congonhas A319 would not have retained power on No 2 after landing? This is exactly how all those opinions here wanted the 737 to be redesigned! It wouldn't have run off the end. Unfortunately it might have crashed on final approach instead if the crew had gone to sleep. A320 has automatic thrust retardation in autoland. Pilot still has to pull the levers back and is reminded to do such by the infamous "RETARD!" callout, which is generated in both manual and automatic landings. Bernd |
Flyinheavy;
Could it show a lack of training for this particular situation (1 T/R inop) or missinterpretation of eng contrl system, which btw is rather complex and as such providing traps. All automated systems are complex and are therefore open to technical or human error. I think that stating that such "provides traps" is like saying airplanes provide traps - both statements are trivially true and do not point either to problems or solutions. Training is a key as I have said a number of times on this and other threads. I have said many pilots are afraid to disconnect the autothrust on the 320 - that is a training issue, not a complexity matter. The airplane flies beautifully in fully-manual flight - it is no more difficult to fly than any other type and no busier - if it is, there is a training/practise problem occuring not a complexity/technical matter. The other issue is, as Bernd has eloquently stated, no automation can handle all human error. That is indeed where it can get complex. How to determine failure and arbitrate failure in two systems is a case in point. Every solution is attended by other, perhaps less obvious problems. I should think that all those suggested design changes which have been suggested here regarding various perceived system/automation faults have already been vetted by those who do this for a living and rejected for one or another good reason. In other places I have suggested, not uniquely of course, that because humans are so poor at monitoring over long periods of idleness and that computers never tire, that there are some, not all, areas of normal operation which could be passively monitored with increasing intervention as "normal" degrades to abnormal. I know that there are significant problems with this approach and know also that the Airbus has already taken this approach in some, but not all, areas of aircraft operation. |
Oh for goodness sake people. This thread long ago became a parody of itself and is now about to disappear up its own proverbial.
Ralph Cramden, your post takes the biscuit. I have hand flown into most major US airports and a good number in the rest of the world inluding ORD, LGA, LAX, DFW, MIA, JFK, SFO, well you get the picture. Perfectly normal in my day. You were 100% in the loop and connected to your A/C. So we take one unfortunate accident about which we know relatively little, and from this conclude that most airline pilots can no longer fly and simply push buttons. In the words of our American cousins, do me a favour will ya?:yuk: |
Maximum,
Hope you're right.But look once again at what RC said: There has been a lot of discussion about how hand flying is difficult, less safe and increases cockpit work load. Well I quess if you don't feel comfortable with it, these things would be true. It takes a lot of practise to aquire and maintain these skills.Someone suggested here that four sim sessions per year would be adequate!! Can you believe that! Some pilots doggedly retain these skills but its entirely down to self-discipline.The problem is not with the pilots,but the system.We have too many spineless politically-correct corporate-minded DFO's who want their "pilots" to be something entirely different;I think the term these people use is "flight managers".Over-use of automation is mandated into the SOP's and the QAR's enforce it rigidly.If you dare fly an approach without the AFDS,you might get hauled before the safety committee...There are airlines today where pilots simply never disengage the AP/AT.Their hand goes from the MCP down to the FMC down to the radio panel and back again in a never-ending automatized stupor.At 500' they might just elect to fly the last 30 seconds of the flight.If automation wasnt so reliable,planes would fall out of the sky on a regular basis,I kid you not. Automation is a nice tool and its correct use is an art in itself;but never use it because it can do what you cant do.When you feel like that due to inexperience/recency issues,that is exactly the time not to use it.You use it when you're damn sure that you can do everything you ask of it yourself. Crashes due automation reliance/complacency/confusion: Congonhas Cali Strasbourg Bahrain 320 AeroPeru Birgen and many many more.It is a problem and we need to recognize that. |
Maximum
My my you are touchy. I don't think I mentioned The Schiphol crash at all in my post. We will have to wait for the final report to find out what went wrong there. I was trying to point out that automation carried to the extreme lengths that it is today is detrimental to one's basic flying skills. I think that is a self evident fact, like it or not. I am sure however that you are a notable exception. Ralph |
Hi Ralph, just because I didn't agree with everything you said makes me touchy??:rolleyes:
Funnily enough, I agree that over-reliance on automatics can degrade certain manual flying skills. On the other hand, the automatics make it possible to operate more safely in today's complex and sometimes overcrowded airspace. Surely the key is to make sure that pilots of our modern, sophisticated airliners are trained to operate them as they are intended, and that they are fully aware of the traps associated with this high degree of automation. Yes, some of the skills are different, but they are still skills. I've seen some crusty kings of the sky make a real mess of things because they have refused to understand this philosophy. I fully agree that the foundation of our skills must be a confident ability to 'take it all out' and simply fly the aeroplane. But I would also say that in the UK at least this has not changed for the vast majority of those in command or approaching it. To say otherwise gives the layman or the PPL a very strange view of our professional standards which is just not true. An example - I had a learner PPL telling me about how well his instructor thought he was getting on with crosswind landings. "Much harder than in the jet you fly" he said "where the automatics do it for you". So c'mon guys, lets have some perspective here, that's all I'm saying. If I stick to what I know, the UK, then I can safely say that 99.9% of airliners out there are being flown by highly skilled and disciplined, extremely competent professional aviators. |
blending skills and automation
I do believe you can blend skills and automation, but the engineers haven't done it.
Displays, both visual and aural (sound) of information and warnings can be enhanced. Also navigational, weather, traffic and the like can all be helpful WHILE THE PILOT STILL FLYS THE PLANE. We all seem to set BUGS for heading or airspeed or altitude. A gadget that says...HEY PAL, YOU ARE FIVE KNOTS BELOW VREF or YOU ARE FIFTY FEET TOO HIGH would demand pilot skill improvements. Have you ever watched a mediocre pilot hand fly a landing/approach? No auto anything! He really never gets the engines to match up and is dancing on the rudders to keep going straight. I've seen pilots be at idle on one engine while using twice as much thrust on the other to make the approach, dancing on the rudders all the way down. NUTS. You have to force your mind to do many things...take a look at DP Davies "handling the big jets" Those subconcsious things pilots do to make a landing...they all have to be consciously learned at one time or another. |
Rananim: Over-reliance on automation degrades manual skills,breeds laziness and complacency and affects the pilots scan detrimentally.New pilots are being taught to operate their aircraft via the automatics.You hear of visual circuits being programmed into the FMS.Of pilots asking if they can take the AP out to fly an approach.You hear pilots saying if the vis drops below 3/4 mile,theyd better do an autoland.If the runway changes on them and theyre suddenly 4000'high on the VNAV do they "fly the plane" or reach for the FMC and start pressing buttons.How many can fly an arc procedure using raw data alone,controlling speed and profile at the same time.Or enter a hold without AP/FD/AT,turn the right way,begin the outbound timing at the correct point and fly the correct wind-adjusted heading w/o ref to track line. Some pilots doggedly retain these skills but its entirely down to self-discipline.The problem is not with the pilots,but the system.We have too many spineless politically-correct corporate-minded DFO's who want their "pilots" to be something entirely different;I think the term these people use is "flight managers".Over-use of automation is mandated into the SOP's and the QAR's enforce it rigidly.If you dare fly an approach without the AFDS,you might get hauled before the safety committee...There are airlines today where pilots simply never disengage the AP/AT.Their hand goes from the MCP down to the FMC down to the radio panel and back again in a never-ending automatized stupor.At 500' they might just elect to fly the last 30 seconds of the flight.If automation wasnt so reliable,planes would fall out of the sky on a regular basis,I kid you not. Automation is a nice tool and its correct use is an art in itself;but never use it because it can do what you cant do.When you feel like that due to inexperience/recency issues,that is exactly the time not to use it.You use it when you're damn sure that you can do everything you ask of it yourself. And the best way to maintain our skills and proficiency is to hand fly our aircraft in non stressing environments (at your home base or at low flow airports) on a regular basis. Sometimes your co-pilot only needs a word of incentive, because most of the times he might just be waiting for that opportunity to hand-fly the bird. Always include in your briefing the way you are going to fly your aircraft, so that your companion is not taken by surprise. (that doesn't preclude the pilot to switch of AP/FD/ATS in case of any malfunction or misbehavior - but clearly stating so). Commonsense, plays a very important role here. If you're tired, in bad weather, or in a complex situation, just put your AP working for you. Otherwise, enjoy your hand-flying...Wasn't that the reason why you chose that profession? (If you're a good, skilled and trained pilot...your pax will never notice!);):ok: |
another view.
This is not to detract from any of the opinions so far expressed.
This was a training scenario. I was taught to teach a certain way, namely, demonstrate the systems and capabilities to educate and reassure, then gradually introduce the gotcha's to demonstrate the quirks of the systems backed up by accident/incident reports, the objective being to impart both knowledge and situational awareness. In the analogue / clockwork machinery I used to fly, the limitations on autoflight did mean hand flying the aircraft a fair percentage of the time during the most critical phases. Advancing onto a comparable type to that involved in this accident was an interesting experience, because the basis of early training was to monitor and let the systems do the work, a concept I was familiar with as an instructor but not as an operational philosophy. A subtle shift in emphasis was that one was no longer announcing one's actions to be confirmed on the MCP (by the NHP), one was announcing what the MCP was now displaying as the handling pilot, to be confirmed by the NHP. What we will not know until the report is properly issued is the background in aero / cultural terms of the mix in the cockpit, hours alone do not tell the full story, nor necessarily does the nationality, or the shared initial training background of those involved. Not yet at least. By most civilian standards, all of the crew members were quite experienced in terms of hours, other operators field crews with far less combined experience on the same aircraft, and a similar incident has seemingly failed to occur. Personal experience was that as hours on type accumulated, and situations permitted the hand flying side was re introduced and encouraged. To me, this was a sound philosophy moving to the "new" glass cockpit environment. There were times, however, when the workload was very high the active training had to stop and we had to concentrate on being a crew, as trained in the simulator, work to our combined strengths, and concentrate on flying the aircraft, calling deviations and sticking to company SOP ! After all a plane is just a plane whatever badge it carries. As I say, not a statement as to what caused what, just an observation. TR |
Ralph Cramden: . . . "Where have all the pilots gone? A sad lament indeed. They have been automated out of existence. I'm afraid there are not many Sullys left in our industry. A man who took an automatic A/C and flew it." Irrespective of the training culture and idiosyncracies with overall emphasis on automation, . . . For the life of me, I can't figure out why these chaps have an aversion to ever wanting to get a grip on the real airplane. Instead, they hang on the A/P and do an autoland at destination; or at best, disconnect at 500 feet and then "fly" 30 seconds in VMC to touchdown. I would often suggest to these chaps: "After 14 boring hours, don't you want to at least disconnect the A/P and A/T for 10 minutes . . . and do a manual intercept and try hand flying the ILS?" Duh. :confused: |
Those that say 'the motivation to hand fly stems from the top' are spot on.
At the moment the managers in the airline I fly for certainly do not encourage manual flying/visual approaches. When flight crew first convert to type they are not allowed to do a visual approach for the first 6 months. The end result of this is even after 6 months, most will not attempt a visual approach due to a lack of confidence. :( In the last year alone I can only remember one occasion when an F/O hand flew a departure to the point of first level off - all the others have got the A/P in buy then. What happens when it's u/s ? Indeed I have recently been informed of a Capt. who refused to fly an A/C because the A/T was u/s.:eek: I have now been informed by the training department that the whole 6 monthly sim sessions can be done with the A/P in ! Most are obviously choosing to do this. The AMS accident is a snippet of what's to come - it is the tip of the iceberg. |
How much manual hours are necessary ?
Maybe simulators should be replanned for manual flying only apart from autoland training- frankly if 4 sessions of hard manual flying a year don't do it, then you need to re-examine your flying skills or take up private flying to boost them. I do about 80 % of my approaches manual (...and that is of course raw data). If i am tired I use the A/P. The best training i get is, when the weather is bad. In VMC it doesn´t really boost my skills, it´s just for fun in that case. I really admire those super-skilled collegues, who don´t need that training. But sometimes it shows, that they just misjudge their abilities ;) |
What is the schedule for the next update
Have the Dutch announced any future briefings/meetings/hearings in regards to this accident...or has it gone 'behind closed doors' for the time being?
Note: I would expect that by now the CVR and the FDR have been played together in a 738 sim for comparison, that the CVR transcript along with the FDR data has been distributed to all 'interested' (read as official) members of the investigating team), that recordings/transcripts of all tower communications have been completed and also distributed to those same members. I have noted several quotes that KLM has reported some 15 or so similar failures of the radalt on 737 type aircraft. Was these on 738 or mixed versions? Secondly, has any other large nexgen 737 carrier reported similar findings....especially in the US...such as AMR or Southwest....or in Europe such as Ryanair? |
The radalt is a pretty good corrosion detector when it comes to that type of failure. Antenna to fuselage corrosion provides a signal leakage path direct from transmit to receive antenna; hence, the -8 feet indication.
The antennas should be dropped at the C check and the area cleaned. The belly collects a lot of crap, including that corrosive blue water. -8 feet can be a valid altitude, as the 757 antennas are way forward, and will indicate about that when on ground. 0 feet, of course, is gear extended, at typical touchdown pitch. GB |
What is the schedule for the next update ---------------------------------------------------------------- Have the Dutch announced any future briefings/meetings/hearings in regards to this accident...or has it gone 'behind closed doors' for the time being? |
Tks SF
Appreciate that info on ICAO regs and the 30 days...I think a lot of aviation industry professionals not officially members of the investigation would like to see a cvr transcript even if it would probably be redacted somewhat at this stage. The what, when, who, how, and why questions are pretty much pointing to the cvr as a possible guide to some answers at this point.
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I've started a thread in the Tech Log forum in regards to the technical aspects of the 737NG radio altimeter/autothrottle/autopilot interface. I noted my observations while performing some tests.
http://www.pprune.org/tech-log/36648...ml#post4797696 |
Thanks,737AvEng, for doing those tests. A while back I posted what if the #1 RA had failed to -7 ft before the approach was started but only went to retard on glide slope intercept. If you get another chance to try different failures would you try failing the RA to -7 ft before starting the approach? It might be something worth crosschecking before starting an approach or changing the software so the autoland will not arm if this fault happens again.
Corrosion around the antenna has been mentioned as a probable cause for this to happen so it probably will happen again. |
error may not be the same as failure
With trepidation in this apparently exalted company I would point out that there is a critical difference to the softwares' processing of data coming from a source which has self tested or otherwise signalled to the software 'FAILURE', compared to the processing of a parameter which is erroneous.
In the absence of a comparitive function and/or detection of values outwith a 'normal' range the eromeous RA values would be processed in the same way as 'true' data. e.g. negative altitude value,as the software would have no way of detecting that the data was incorrect. The very valuable tests you are conducting must take cognisance of this,and contributors should be very careful only to use 'failure' when the instrument has outputted a failure signal or the software has otherwise detected invalid data,flagged the source as 'failure' and processed/ignored the data accordingly. The softwares' reaction to 'failure' c/f 'erroneous'(undetected) will be poles apart. Apologies for being so pedantic,but unfortunately there is nothing so pedantic as control software,miss out e.g. a closing bracket and it bites your @rse). Where DID I put that opening bracket?http://static.pprune.org/images/smilies/confused.gif |
I don't recall all the indicator or system faults I have encountered in the last 40 years, as I am pretty sure the majority of pilots in this forum, and in some situations hit the panic buttons: the one on the yoke and the one at the side of the throttles. Loss of control is the number one killer since CFIT has been stopped by maps and EGPWS. And no envelope protection in any kind can stop this. There are already airlines operating, where it is mandatory that the FD is kept on at all times !! (it´s the best way of preventing pilots to watch the basic indications) Just ask yourself after a FD approach: Which pitch did i fly ? Which vertical speed did I fly ? Automation will NOT help in reducing loss of control killings. |
Baron737 you are so right. . . . . but, in everything in life we must find the "happy medium".
I have worked for companies who A - encouraged, indeed by the standard they "expected" in Sˇm checks ,in fact they "insisted", that you were really hot (i.e. spent a bit of time ) hand flying departures & approaches in raw data (FD off ) All well & good until , yet again, Mr Le CoPilot is yet again about to severely bust the altitude restriction on a departure from a busy Central European TMA (There is a clue there :hmm::hmm: ) keeping himself up to the standard required to pass his sim check :rolleyes: OR B - Begorah :eek: ( Another clue ;) ) where the pilots almost wanted to declare an emergency if you didn't engage the A/P on departure @ 400' and disengage it @ 500' resulting in total inability of aforesaid copilots to fly a Cessna 150esque visual approach (and even more worryingly self same bod 3 yrs later unable to do same when about to become a Captain :D ) So, like most things in life, there is a happy medium. Yes, it is important to be able to fly the aircraft safely ( and indeed fairly accurately please ) with everything turned off . Please practice this sometimes, but please do so when you do not compromise good operating practices by effectively rendering your co-crew member single crew (i.e. not during departure in a busy TMA) It is also very important in the busy airspace we inhabit, to be able to use (all ) the wonderful featuress available on the MCP (and the imagination to select the mode to be used wisely - VS is your VERY best friend :ok: ) to reduce your workload , and therefore stay a little ahead of your aircraft. The choice of the two should vary infinitely depending on airport/crew/experience/perceived alertness on the day, and is the ultimate expression of exercising wisely your "command authority". On a more general note, I am at a loss & totally aghast, to see an experienced crew from a "legacy carrier" screw up ( on the face of it ) so badly. However, in several years spent commuting, I often (due to being sociable, but yes , also due to "curiosity" :hmm: and indeed a desire to learn) passed many a flight occupying the Jump Seat. I have never ( I am happy to say ) had to intervene, but there have been many occasions that I silently shook my head whilst patiently ( := ? ) awaiting the "paid employees" to do their job. It is a truth in life that it is always easier from the 3rd seat, sitting behind & watching,for that, I am in total agreement, and therefore even more perplexed that in AMS , even that didn't save the day. Incredible, truly and sadly , incredible. |
@captplaystation: The choice of the two should vary infinitely depending on airport/crew/experience/perceived alertness on the day And I have no problem, if someone decides to fly only one ´training approach´ (only IMC counts) out of 10 or whatsoever. But if someone NEVER switches off the automatic in a 5 days tour, and says the sim missions are enough training for him, something is dangerously going wrong. If a colleague doesn´t find the disconnect buttons although he is above glide with high speed and the A/T is just adding full power something went really wrong the last years. (If you NEVER switch this FD off when you have no pressure, why should you do it when in panic ?) Our confidential safety recordings show those incidents in dramatically rising numbers. Until today we were lucky, but you can´t run an airline by luck. |
Tee Emm
As I'm an Avionics Technician, I found your last post shocking. That said, I don't disbelieve you either. There are numerous slips of standards for EASA Licenced Engineers too. I can appreciate there will be a few F/O's out there more inclined to engage A/Ps & A/Ts quicker in various configurations. But, I wasn't aware that big outfits actually encourage or 'train to monitor automatic flight only'... That really is wrong. I'm disappointed actual flying proficiency standards under EASA have dropped too. But as Graybeard has mentioned, more losses seem imminent unfortunately. BAe |
Nice to see the old "whats the difference between FOs and ducks?" still routinely rears its ugly head.
The PF was not properly monitoring the automatics during the approach, and the plane crashed when the captain took control of the stall recovery without putting his hands on the thrust levers. FOs (and captains!) practicing raw data, manual flight is a good thing, but the lack of was not the cause in this accident. Still, at least ducks can fly! |
standards
BAe 146s make me cry
There are numerous slips of standards for EASA Licenced Engineers too. |
Wow, this thread has now developed into a automatics versus handflying discussion. I wonder though if that was really the case. Both pilots occupying the pilot seats were ex AF. I doubt wether they weren’t capable of manual flying. I see a lot of human factors in this accident.
Presumably, the FO was being trained as a new FO on the A/C, he was also (presumably new on the A/C as there was a second FO (in my airline we do that in the first week on line training) He came in established on the localizer and intercepted the G/S, more than likely the pl went to idle as he was going down and lowering the gear and lowering the flaps, basically slowing down. Shortly thereafter the faulty RA caused the AT to engage retard mode. The exact sequence doesn’t matter. The pl did what one would have expected them to do, the only thing wrong at this point was that the FMA annunciation read RETARD instead of MCP speed. The FO might, I stress might, have seen this but being new to the A/C not have realized even that that was not the correct annunciation. Once again the pl’s did what one would expect at this point. The captain may not have noticed because he was busy lowering the gear and selecting flaps 15(probably watching the speed and altitude and maybe even the GS annunciation, but not the retard annunciation) . All was normal for the next approx 70 seconds. The A/C did exactly as it was supposed to do,slowing down. They next selected flaps 15 and rotated the MCP speed selector to FAS. This is where the second clue that something was not right should have become apparent, the AT didn’t move forward to maintain FAS. Having spoken to two college’s that tried it in the sim, it took 25 seconds to decelerate from FAS to stickshaker speed. So what occupied the pilots that they didn’t notice the speed dropping below FAS? Well, for one, they were reading the landing C/L. It takes about 4 seconds and boeing says that both pilots have to look at the selections. However it was a training flight, maybe the FO forgot to arm the speed brakes, maybe the captain forgot the select the engine start switches to CONT. In any case, for 25 long seconds they did not notice that the speed went from FAS to stickshaker.( bad airmenship for sure, but still I wonder what kept the occupied). Finally, the stick shaker went off(somewhere around 800 feet) completely unexpected. The FO, out of primal training pushed the pl’s full forward( and mistakenly didn’t push the AT disconnect button, btw, I think boeing may face a law suit there because the FCOM procedure for a stall recovery does not explicitely says to disconnect the AT, common sense notwithstanding)) and probably pushed forward on the yoke. At this moment the captain took over( I heard this from a reliable source). So here you are, the captain took over at a critical point, probably using both hands to push the yoke forward, more than likely an autopilot disconnect wail going off, possibly a “glide slope”, “sink rate” or “terrain” warning going off and the captain not noticing that the PL’s were going back to idle. The rest is history! So was this an automation v. hand flying deal. Who knows. The FO could have been the best stick around. Maybe it was not his hand flying skills but his understanding of the automatics that did him in. Showing proficiency in automatics is also required in getting a type!! Maybe because he was such a good stick but not knowing the modes of the automatics was the problem. So, In hindsight, I don’t think there is anything wrong with the airplane design, It did wat it was supposed to. There may not have been anything wrong with the manual flying skills of the flight crew. It may have been a training flight were all the holes in the swiss cheese lined up. The FMA unnuciation shortly after GS capture, RETARD instead of MCP, I could have missed that, The PL´s not going forward at FAS, I wouldn´t have missed that(hey, I´m a nervous flyer),missing the AT disconnect button in a completely unexpected stall condition at 800 feet, I wonder!!! And then missing the PL going back, fighting a stall with a myriad of warnings going off, I wonder how many guys would have caught that. If you ask how many guys would shut down the wrong engine? a very unlikely situation, and still that happened in the UK. So I can completely see how a crew could miss disconneting the AT during a high stress event!! |
So I can completely see how a crew could miss disconneting the AT during a high stress event!! If ya forget to fly the plane things could turn into !!!! real fast..Then if ya forget to disconnect AP and AT when !!!! hits fan, it could get real nasty up to an including crash. No big surprise going on here, just very basic flying...Or lack of.:sad: |
Double RA fault on a A330 a while back and the autothrust locked at the thrust setting the engines were at the time. From memory it was MAS arriving into Melbourne. What kind of a system would allow RA failure to retard the engines to idle, that sounds unwise to me. Though I agree even the newest 737 is 3 or 4 decades older technology than the Airbus.
Pity it wasn't a 320, alpha floor would have saved lives. |
Originally Posted by flyburg
I think boeing may face a law suit there because the FCOM procedure for a stall recovery does not explicitely says to disconnect the AT, common sense notwithstanding
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Flyburg, should your account also include things others posted earlier – descending out of cloud, trying to get a visual fix on the runway, but the AP was getting the nose high to keep on GS with decreasing speed, so they might have been looking too high up and taken longer to acquire it?
Chris N. (Trying to get a complete possible scenario to illustrate workload issues, for a safety talk – although the real story may or may not confirm this when the transcript of the cockpit voice recorder emerges and the investigation is complete.) |
Turkish press update
Turkish Daily - Domestic Press Report from March 20 regarding estimated lawsuit
Boeing faulted in THY disaster in Netherlands |
Ambulance Chasers
The two U.S. attorneys, Gerald C. Sterns and Martin T. Reilley, and U.S. international aviation consultancy firm owner Terrence Ford, held a press conference yesterday in Ankara about the responsibility of the American Boeing company in the plane accident. |
Due to the emontionally-charged nature of this particular thread and the almost impossible task of having a rational discussion on civil aircraft design as embodied in Boeing and Airbus aircraft, I will perhaps steer clear of too much discussion on this subject for the moment. Suffice to say, that difficult questions have to be asked over any aircraft that could allow this to happen. As others will rightly point out, 99.9999% of 737 approaches occur without incident, but in our line of work we should consider the 0.00001% case. A combination of factors occurred here (very well laid out by flyburg a short time ago), and as a result many people died who did not need to. No one is going to come out of this well - Turkish Airlines, Boeing and the individual pilots all had key parts in the jigsaw of factors that led to this accident. I trust that even the most hardened Boeing supporters will be willing to say that this is not an acceptable fault to have lurking in the background. As an Airbus operator, I would put my hand up and say that there are certain features of Airbuses which are potential glitches to inexperienced crews on type. Nonetheless this particular accident would have been almost impossible on an Airbus, and I hope that future Boeings will introduce a facility, as has been present in Airbuses for over 20 years, that prevents the crew from stalling a serviceable aircraft (or indeed one suffering minor snags).
You will never fully eliminate pilot error, however alarming and fundamental those errors may be. Nor will you totally eradicate company cultures that permit dangerous situations to develop without them being instantly challenged. Both of these 'human factors' considerations are clearly something we should aspire to change, but that is a very long term aim. Therefore the final protection has to be the aircraft itself. In this day and age the technology exists, and is in daily operation around the world, to provide significant protections against the first 2 lines of defence failing. I hope that in the future the world's biggest airliner manufacturers will take full advantage of the readily-available and proven technology to provide maximum protection to the travelling public. |
I'm all for that Norm, but you have to admit, it is a little bit :ugh: :ugh: when American lawyer and all round aviation specialist :hmm: Gerald C Sterns assertion that " the Turkish pilots had no fault in the accident" will probably receive widespread acceptance where it has been published, and for all the wrong reasons. :=
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To stall or not to stall
Qoute from NormanStanleyFletcher
"that prevents the crew from stalling a serviceable aircraft" The A-320 in Bangalore, many moons ago, was not stalled, but it fared no better than the THY B-737. In fact, if I recall correctly, every soul on board that non-stalled airliner perished as the autopilot neatly descended it into the ground, thanks to a clueless crew, clueless to perfectly annunciated FMGS modes. Please note that this post is not Airbus versus Boeing, I am experienced on both and know well that both have pro's and con's. Point is that in the end, it is the crew that must save the ship. And about lawyers - you know how you can tell the difference between the carcasses of a rattlesnake and a lawyer on a desert road? The rattlesnake corpse has brake/skid marks in front of it. |
The lawyers are going after the deep pockets so Boeing is their target for blame. The pilots probably don't have enough in their estates to be worth a lawsuit.
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