Mitker Posted November 5, 2013 Share Posted November 5, 2013 (edited) Not a specialist in the field, so just asking: doesn't the picture show that the burst occurred on an area where severe abrasion had taken place? Like if the brakes had been applied before landing instead of while in contact already, meaning the wheel was blocked during contact? edit: some replies addressed the same question meanwhile I was reading/typing.. Edited November 5, 2013 by Mitker Link to comment Share on other sites More sharing options...
ableguy Posted November 5, 2013 Share Posted November 5, 2013 THAI officials said it was not a burst but just the tyre deflated after landing. I didnt know deflated tyre could make a noise of loud explosion .. another lies from officials to save their faces ? This kind of tyre issue happens very often . no need to cover up . As an ex pilot heavy landing or debris on runway, no need for all the I don't know armchair sleuths. 1 Link to comment Share on other sites More sharing options...
ableguy Posted November 5, 2013 Share Posted November 5, 2013 Not a specialist in the field, so just asking: doesn't the picture show that the burst occurred on an area where severe abrasion had taken place? Like if the brakes had been applied before landing instead of while in contact already, meaning the wheel was blocked during contact? Absolute bullshit. Link to comment Share on other sites More sharing options...
Mitker Posted November 5, 2013 Share Posted November 5, 2013 Not a specialist in the field, so just asking: doesn't the picture show that the burst occurred on an area where severe abrasion had taken place? Like if the brakes had been applied before landing instead of while in contact already, meaning the wheel was blocked during contact? Absolute bullshit. May I ask why, if it is so "absolute" for you? Link to comment Share on other sites More sharing options...
scotinsiam Posted November 5, 2013 Share Posted November 5, 2013 No ploblem - the tyre has been sent out to Somchai's garage and is being repaired will be used later - why falang worry too mut 1 Link to comment Share on other sites More sharing options...
Chalard Posted November 5, 2013 Share Posted November 5, 2013 (edited) Thai Airways plane's tyre bursts after touchdown, no injuries reported BANGKOK, 5 November 2013 (NNT) - According to reports, A rear tyre on the right undercarriage of Thai Airways International flight TG 130 burst shortly after the plane touched down on the runway at Mae Fa Luang airport in Chiang Rai province on Tuesday. No injuries were reported. The incident occurred about 9.29am, reports said. After the incident, the captain guided the aircraft to a parking bay without further incident and all passengers were safely disembarked. Reportedly, THAI staffs are looking into the cause of the incident and the tyre was replaced. Reports further stated that the THAI board chairman has come out to say that the tyre did not burst, but only "deflated" after landing. -- NNT 2013-11-05 Pretty easy to see that the brakes remained locked on this wheel, and the tire was dragged in one position until the tire burst from lack of rubber. Not unusual to have this happen, but unusual to make up a story about what happened. Interesting to see what a 4 month investigation will unveil. Overweight stewardesses??? Well spotted Stoli. Even a blind man can see that. Edited November 5, 2013 by Chalard Link to comment Share on other sites More sharing options...
Chalard Posted November 5, 2013 Share Posted November 5, 2013 (edited) If the wheel was locked by defective brakes how come we can see the site of the blow out? Just asking and seeking an intelligent answer. Don't expect an IA from somebody at Thai Airways or the Transport Ministry / government!!! Edited November 5, 2013 by Chalard Link to comment Share on other sites More sharing options...
Garry Posted November 5, 2013 Share Posted November 5, 2013 (edited) Could be as simple as a defective rotary transducer on the axle of that particular wheel, sending intermittent data to the electronic brake system control unit. Edited November 5, 2013 by Garry Link to comment Share on other sites More sharing options...
MrY Posted November 5, 2013 Share Posted November 5, 2013 If the wheel was locked by defective brakes how come we can see the site of the blow out? Just asking and seeking an intelligent answer. For example, if brakes were applied heavily too early on touchdown (before wheel spin-up signal, 50-60 knots or so) and locked wheel protection not working. The wheel would then start rotating freely once the pilot released the brakes after landing roll. Or same kind of scenario with heavy breaking during landing roll and anti-skid not working. THAI officials said it was not a burst but just the tyre deflated after landing. I didnt know deflated tyre could make a noise of loud explosion .. another lies from officials to save their faces ? This kind of tyre issue happens very often . no need to cover up . As an ex pilot heavy landing or debris on runway, no need for all the I don't know armchair sleuths. Heat generated by the tire can cause a tire to "deflate" in this manner even without this kind of visible damage. A long taxi distance at heavy takeoff weight, followed by a rejected takeoff at high speed will do the trick, for example. Stay clear and wait for about 10 minutes. Goes off like a stick of dynamite... BTW, judging by the picture, we're not looking at damage from debris or simply a heavy landing (could be a factor though). Link to comment Share on other sites More sharing options...
MrY Posted November 5, 2013 Share Posted November 5, 2013 Not a specialist in the field, so just asking: doesn't the picture show that the burst occurred on an area where severe abrasion had taken place? Like if the brakes had been applied before landing instead of while in contact already, meaning the wheel was blocked during contact? Absolute bullshit. May I ask why, if it is so "absolute" for you? The wheel could have been locked on touchdown, due to a combination of poor technique (pilot nervously applying brakes early due to landing long, etc.) and a failure in the anti-skid system, but not by one factor alone. If the wheel was locked due to brake system failure alone, it would have stayed locked all the way to a full stop (and would have blown up before coming to a stop). No bullshit in the above, just normal curiosity. Link to comment Share on other sites More sharing options...
rakman Posted November 5, 2013 Share Posted November 5, 2013 Thai Airways plane's tyre bursts after touchdown, no injuries reported Notice the large flat spot around the "X" of the rupture? That's a brake lockup / anti-skid failure. Check the runway for debris. Link to comment Share on other sites More sharing options...
Rionoir Posted November 5, 2013 Share Posted November 5, 2013 I used to feel pretty safe flying Thai... they sure are having quite a bad year. Sabotage? Link to comment Share on other sites More sharing options...
rakman Posted November 5, 2013 Share Posted November 5, 2013 Not a specialist in the field, so just asking: doesn't the picture show that the burst occurred on an area where severe abrasion had taken place? Like if the brakes had been applied before landing instead of while in contact already, meaning the wheel was blocked during contact? Absolute bullshit. May I ask why, if it is so "absolute" for you? The wheel could have been locked on touchdown, due to a combination of poor technique (pilot nervously applying brakes early due to landing long, etc.) and a failure in the anti-skid system, but not by one factor alone. If the wheel was locked due to brake system failure alone, it would have stayed locked all the way to a full stop (and would have blown up before coming to a stop). No bullshit in the above, just normal curiosity. The pilot can't lock one wheel. So an ABS failure on the failed assembly is more likely, since the other tires look fine (without being able to see all around the tires). A bit of investigation is warranted. Link to comment Share on other sites More sharing options...
MrY Posted November 5, 2013 Share Posted November 5, 2013 The pilot can't lock one wheel. So an ABS failure on the failed assembly is more likely, since the other tires look fine (without being able to see all around the tires). A bit of investigation is warranted. Correct. It is not possible by pilot error alone. Requires a brake system component malfunction to go with it. Or no pilot error, just "normal" heavy braking and component malfunction. In any case quite common. This is how you would find out about a brake system problem, usually. Check anti-skid fault codes, check wheel transducers, check brakes for freedom of rotation, check anti-skid valves, check wiring for damage, etc. If nothing found, replace and bench test anti-skid controller. Nothing in this incident is directly implying poor maintenance (even though that is probably also true). Link to comment Share on other sites More sharing options...
thatswhatuthought Posted November 5, 2013 Share Posted November 5, 2013 The tire pictured in post #8 is "flat spotted" through at least a dozen plies. This would be due to the wheel being locked during touchdown (malfunction of locked wheel protection) or wheel locking during braking (anti-skid malfunction). It has nothing to do with "pilot technique" or how hard you brake. It is a system malfunction, plane and simple... The fuse plug in the wheel is of no use for this kind of damage, as heat transfer to the wheel is required before it can work. Fuse plugs work well for excessive heat generated by the brakes not the tires. In this case the heat generated by the tire skidding would have taken a few minutes to heat up the nitrogen the tire is filled with, causing the pressure to increase and the weakened tire to blow out on taxi-in (normally within 15 minutes). I'm no aviation expert but I was thinking the same thing. (tire locked up) You can see the flat spot on the tire clearly. Link to comment Share on other sites More sharing options...
transam Posted November 5, 2013 Share Posted November 5, 2013 Was the tyre a remould/retread................. Link to comment Share on other sites More sharing options...
Chao Lao Beach Posted November 5, 2013 Share Posted November 5, 2013 The pilot can't lock one wheel. So an ABS failure on the failed assembly is more likely, since the other tires look fine (without being able to see all around the tires). A bit of investigation is warranted. Correct. It is not possible by pilot error alone. Requires a brake system component malfunction to go with it. Or no pilot error, just "normal" heavy braking and component malfunction. In any case quite common. This is how you would find out about a brake system problem, usually. Check anti-skid fault codes, check wheel transducers, check brakes for freedom of rotation, check anti-skid valves, check wiring for damage, etc. If nothing found, replace and bench test anti-skid controller. Nothing in this incident is directly implying poor maintenance (even though that is probably also true). MrY has covered it. Very unlikely to be locked on touch down as suggested above up the page. Also unlikely to be pilot error, even if you apply brakes in the air, nothing happens and there are many protective systems, this is indicative of an anti-skid component failure. The two really concerning issues in my eyes, the idiot statement out of THAI is outrageous and insulting to anyone with 2 brain cells and this idiot should be fired. And the report that they just replaced the wheel, there is clearly a mechanical (or system) malfunction that needs to be addressed first. Lets just hope this was poor reporting. By people who should know, THAI is really not that bad behind the scenes as is made out on Thai Visa in maintenance and tech crew standard, but some bizare marketing for sure with price structures and PR statments. Link to comment Share on other sites More sharing options...
Chao Lao Beach Posted November 5, 2013 Share Posted November 5, 2013 Was the tyre a remould/retread................. Normally would be, it is normal for 12 re-treads. (I mean to be retreaded 12 times) Nothing wrong with this. They are designed to be re-treaded. Link to comment Share on other sites More sharing options...
transam Posted November 5, 2013 Share Posted November 5, 2013 Was the tyre a remould/retread................. Normally would be, it is normal for 12 re-treads. (I mean to be retreaded 12 times) Nothing wrong with this. They are designed to be re-treaded. By whom............ .............. Link to comment Share on other sites More sharing options...
Loles Posted November 5, 2013 Share Posted November 5, 2013 Have to hide the logo! Reo Reo. Link to comment Share on other sites More sharing options...
Torrens54 Posted November 5, 2013 Share Posted November 5, 2013 Maybe TG has run out of Black Paint.....someone could be Fired for this loss of face. Link to comment Share on other sites More sharing options...
tingtongteesood Posted November 5, 2013 Share Posted November 5, 2013 Get out the puncture repair kit lads....oh and the black paint for the tail, quickly.... Link to comment Share on other sites More sharing options...
FNQ Posted November 5, 2013 Share Posted November 5, 2013 On landing the wheel has locked up under heavy braking causing the tyre to flat spot consequently making it easy to blow. Agreed,beat me to it. Link to comment Share on other sites More sharing options...
jacko45k Posted November 5, 2013 Share Posted November 5, 2013 THAI officials said it was not a burst but just the tyre deflated after landing. I didnt know deflated tyre could make a noise of loud explosion .. another lies from officials to save their faces ? This kind of tyre issue happens very often . no need to cover up . They just seem to have got into the habit of it now. (Telling lies despite the truth being innocuous). Link to comment Share on other sites More sharing options...
sceadugenga Posted November 6, 2013 Share Posted November 6, 2013 Here's a video of Qantas losing a tyre, maybe we can turn this into an Aussie bashing thread. [media] [media] Link to comment Share on other sites More sharing options...
The Usual Suspect Posted November 6, 2013 Share Posted November 6, 2013 Really? Nobody checking for these things now? They only check AFTER something happens. No need to check before because everything is fine. Link to comment Share on other sites More sharing options...
DGIE Posted November 6, 2013 Share Posted November 6, 2013 Perhaps there was a bomb inside? Link to comment Share on other sites More sharing options...
DGIE Posted November 6, 2013 Share Posted November 6, 2013 it's good it burst on the ground. It would be more frightening if it burst on the sky Link to comment Share on other sites More sharing options...
shaurene Posted November 6, 2013 Share Posted November 6, 2013 Her goes Thai A/Ways hiding things again, what would the load explosion then, they never mentioned that. Thai Air are getting away from their now old reputation of good planes, service etc. I fly 3-4 times a year back to New Zealand, they used to use good comfy planes and service was great but over the last 2-3 years they have used their old 777's, the seats are like wood and service has really declined where the staff think they are so important and make you feel guilty if you call them for something. Also their Thai miles program, I always book my flights in New Zealand and fare prices have really gone up, I now pay between $1700-$2200 return and they class it as a special and do not give mileage, but when I book my wife ticket here here fare is the same or little less what I pay and she gets mileage from here. I had to go home few months ago before my Thai return ticket date, Thai were 49,000baht $2,000 and I checked Qantas they were $1,300 and very good comfortable plane, good service etc. I will be looking to Qantas in future, and stuff Thai Airways all they think about now is profits. Link to comment Share on other sites More sharing options...
shaurene Posted November 6, 2013 Share Posted November 6, 2013 Perhaps there was a bomb inside? What, do they not use steel tred tyres I know they do not use steel treds on cars here. Link to comment Share on other sites More sharing options...
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