Russia Grounds Sukhoi Superjet 100 Over Safety Concerns
Russia Grounds Its Newest Airliner Over Safety Concerns
Russia Grounds Its Newest Airliner Over Safety Concerns By ANDREW E. KRAMER DEC. 24, 2016 MOSCOW — Russian aviation authorities have grounded the country’s fleet of its newest model of civilian airliner, the Sukhoi Superjet 100. Metal fatigue, a problem usually associated with older airplanes, was discovered in the tail section of a new Sukhoi plane, the Russian regulator Rosaviatsia said Friday. After the latest announcement, the Russian national airline Aeroflot, a major Sukhoi customer, on Saturday canceled 21 flights scheduled on domestic routes during the busy holiday season. Rosaviatsia ordered the planes grounded pending inspections after a regional carrier, IrAero, reported finding metal fatigue in a component in the tail wings of one plane, according to Regnum, a nongovernmental Russian news agency. http://www.nytimes.com/2016/12/24/bu...ref=world&_r=0 |
Grounds? 21 plane from >100 produced? Isn't this report a bit overinflated?
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If look close to the source, Rosaviatsia "grounds" SIX Aeroflot SSJ and ONE IrAero because of "possible defect in one of the HS attachments". Aeroflot, which is not quite happy with service contract with Sukhoi, "grounded" all his fleet with demand for warranty repair.
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If look close to the source, Rosaviatsia I wonder how Mexico's DGAC will react with the second largest fleet being operated by Interjet. |
I can only speculate, but IrAiro airframes are from the very first built and "defect" was found in one of them. Aeroflot known for their tendency to have any opportunity for cancelling "nonprofitable" flights. I can't give any more information until official papers leaks into internet.
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Originally Posted by Kulverstukas
(Post 9620307)
Aeroflot known for their tendency to have any opportunity for cancelling "nonprofitable" flights
You should know that SSJs were pushed onto the Aeroflot and if I remember correctly, a large portion of their ssj fleet spent a majority of time on the ground, instead of in the air. Of course, an airplane becomes unprofitable, when it sits on the ground. |
Stabilizer mounts problem
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Originally Posted by Sunamer
(Post 9620441)
that's is because it is a business and not a charity.
You should know that SSJs were pushed onto the Aeroflot and if I remember correctly, a large portion of their ssj fleet spent a majority of time on the ground, instead of in the air. Of course, an airplane becomes unprofitable, when it sits on the ground. |
"and if I remember correctly, a large portion of their ssj fleet spent a majority of time on the ground, instead of in the air." Wrong As sources in the industry state, level of readiness of the russian airplane is 50-60%. But even this is not the main problem. Companies complain they have to wait sometimes for several months for necessary spare parts to arrive, during which airframes are grounded and don't make any money. Как утверждают источники в отрасли, степень исправности российских самолетов колеблется на уровне 50-60%. Но даже не это является основной проблемой эксплуатантов. Больше всего представители авиакомпаний жалуются на то, что иногда необходимые запчасти приходится ждать по несколько месяцев, в течение которых лайнеры простаивают и не приносят прибыль. http://samolety.org/rossijskie-ekspl...-superjet-100/ In total, the number of failures for 1000 hr period of ops is 150-200% higher than the numbers for analogues western types of A/C. В целом, если фиксировать все отказы в работе систем за 1000 часов полета, то у SSJ-100 данный показатель будет выше на 150-200%, чем у аналогичных серийных машин западных производителей. http://samolety.org/rossijskie-ekspl...-superjet-100/ They are quite happy with 757s, 767s and 777s or 320/330s that they use .... If SSJ was on par with those: 1) why would SSJ be forced onto Aeroflot, in the first place? 2) why would Aeroflot start complaining about SSJs, if the type is no different in terms of time-on-the-ground from the B or A types of A/C? If it is a profitable, cheap and reliable A/C type, why would Aeroflot start throwing a meaningless tantrum about profitability, if no such problem exists? :ugh: It makes no sense. If Aeroflot complains, that means, the business perceives it as a larger problem, comparing to what they have with western types, don't you think? |
Originally Posted by Sunamer
(Post 9620454)
Not really. If it is a profitable, cheap and reliable A/C type, why would Aeroflot start throwing meaningless tantrums about profitability, if no such problem exists?
:ugh: |
is there a source from the Russian CAA about this? All I can find is references in the American presss.
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If Aeroflot complains, that means, the business perceives it as a larger problem, comparing to what they have with western types, don't you think? |
Here's the AD.
http://i.imgur.com/XDSQIY1.png Interjet's press release. No mention of grounding the fleet. https://scontent.fcul1-1.fna.fbcdn.n...8e&oe=58D736CC |
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A little known detail on the differences in design philosophies of Soviet era Russian aircraft and contemporary western aircraft was in the degree of prescribed overload limits for individual components and assemblies. In western aircraft design each individual component must be able to demonstrate withstanding of loads at least 50% higher than the maximum design load limit before failure, and assembled load bearing structures must also demonstrate the same. The old soviet aviation manufacturing standards prescribed 100% over design load limit before failure. This was because Soviet industry was not able to supply metals meeting required specificatios with a consistency that western industry was able to do. This resulted in generally much stronger, but correspondingly heavier airframes.
The SSJ was the first russian civilian airliner that was designed according to western specifications. My suspicion is that while the aircraft design may have been sound, the component manufacturers have not quite grown up to the challenge. |
The SSJ was the first russian civilian airliner that was designed according to western specifications |
Ever think about difference between local and international flights? :rolleyes: I am quite tired of that attitude of old and not so old people in Russia that name everything that is positive - a local success, and everything that is negative - a western spy plot (or, alternatively, put blame for SSJ failure, onto B or A shoulders). That reminds me of believers that praise the Lord for everything good that happened, while blaming Satan for everything bad. These two groups of people have a lot in common. Namely, they deny facts and make up ridiculous stories to support their weird world views. Since that attitude requires olympic-game-levels of logical gymnastics, facts and actual inconvenient truths are removed from the picture (as they disturbing to that picture), and are replaced with easy to digest explanations that do fit an imaginary world quite well. One thing they don't do quite well, is finding and fixing real problems, though, since the connections those explanations are providing, are IMAGINARY and couldn't possible suggest any real-world fix. Yeah, those B or A corrupt incentive package is what got SSJ.... /s (sigh) How about actually looking into why western countries don't want to buy SSJs and then MAKING SSJ competitive? Nah, that would require actual work done and, potentially, a lot of it. |
Originally Posted by AN2 Driver
(Post 9620496)
is there a source from the Russian CAA about this? All I can find is references in the American presss.
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Originally Posted by porterhouse
This isn't actually true. The design was totally Russian
The design was indeed entirely Russian, never said it wasn't. It was the +50% overengineering on component level (instead of +100%) that I was referring to, Russia adopted the western certification standards prior to building the SSJ, and this was the first design where they were applied (as opposed to the old Soviet era certification standards). |
Dos anyone knows it the 3 City Jet SSJs that are right now flying for between Ireland and France are affected ?
Saw one last week in CDG terminal 2G . The airline is reported to have 12 more on order to replace their RJs .( plus 16 more options) They must have done their maths. |
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