Comac had its ARJ21-700 to carry out new test flights following a series of optimizations of the aircraft. Last September, the aircraft manufacturer had not made a mystery of certain elements that were still defective or requiring a review, including cabin noise far too high, warning systems too complex and a problem Likely associated with pressurization.
Comac intends to implement the planned changes by the end of 2017 before considering a weight loss program as the aircraft is heavier than expected. Until now, the aircraft has carried out flight tests in the form of landing and take-offs with crosswinds, testing of a modernized flight control system software.
When the aircraft received type certification from the Chinese Civil Aviation Authority more than a year and a half ago, the same authority has asked the aircraft manufacturer to implement at least seven improvements, subject to these flight tests.
KarelXWB wrote:According to the article below, there are still lots of issues that need to be resolved:Comac had its ARJ21-700 to carry out new test flights following a series of optimizations of the aircraft. Last September, the aircraft manufacturer had not made a mystery of certain elements that were still defective or requiring a review, including cabin noise far too high, warning systems too complex and a problem Likely associated with pressurization.
Comac intends to implement the planned changes by the end of 2017 before considering a weight loss program as the aircraft is heavier than expected. Until now, the aircraft has carried out flight tests in the form of landing and take-offs with crosswinds, testing of a modernized flight control system software.
When the aircraft received type certification from the Chinese Civil Aviation Authority more than a year and a half ago, the same authority has asked the aircraft manufacturer to implement at least seven improvements, subject to these flight tests.
Translated from http://www.air-cosmos.com/nouveaux-vols ... nois-93499
KarelXWB wrote:According to the article below, there are still lots of issues that need to be resolved:Comac had its ARJ21-700 to carry out new test flights following a series of optimizations of the aircraft. Last September, the aircraft manufacturer had not made a mystery of certain elements that were still defective or requiring a review, including cabin noise far too high, warning systems too complex and a problem Likely associated with pressurization.
Comac intends to implement the planned changes by the end of 2017 before considering a weight loss program as the aircraft is heavier than expected. Until now, the aircraft has carried out flight tests in the form of landing and take-offs with crosswinds, testing of a modernized flight control system software.
When the aircraft received type certification from the Chinese Civil Aviation Authority more than a year and a half ago, the same authority has asked the aircraft manufacturer to implement at least seven improvements, subject to these flight tests.
Translated from http://www.air-cosmos.com/nouveaux-vols ... nois-93499
c933103 wrote:http://sh.xinhuanet.com/2017-04/22/c_136228393.htm
ARJ21 just carried its 10,000th passenger yesterday.
On the report's page 5 you can see a photo of the airline's safety director and two engineers from the airline's maintenance department ARJ21 squadron seating in the aircraftKarelXWB wrote:According to the article below, there are still lots of issues that need to be resolved:Comac had its ARJ21-700 to carry out new test flights following a series of optimizations of the aircraft. Last September, the aircraft manufacturer had not made a mystery of certain elements that were still defective or requiring a review, including cabin noise far too high, warning systems too complex and a problem Likely associated with pressurization.
Comac intends to implement the planned changes by the end of 2017 before considering a weight loss program as the aircraft is heavier than expected. Until now, the aircraft has carried out flight tests in the form of landing and take-offs with crosswinds, testing of a modernized flight control system software.
When the aircraft received type certification from the Chinese Civil Aviation Authority more than a year and a half ago, the same authority has asked the aircraft manufacturer to implement at least seven improvements, subject to these flight tests.
Translated from http://www.air-cosmos.com/nouveaux-vols ... nois-93499
According to http://www.kaixian.tv/gd/2017/0420/258516.html they have finished 7 tests, which was from Mar 27 to Apr20, with one of the test with were testing performance of engine and APU under direct crosswind up to 27kt to extend possible operation condition, and others being testing upgraded flight control system software, noise test, VHF antenna vibration test, cabin door howling test, pilot promotion training, and AT non-command-break in-air test. It said that they will summarize experience from the test and after certain period of maintenance they will continue to optimize the design and carry out test flight.
r2rho wrote:Quoting lightsaber (Reply 2):I've never heard of a production license following certification by 7 months?!?
It never occurred to me that the two wouldn't be done in parallel.
Indeed. I guess we are so accustomed to to seeing them done in parallel that we cannot imagine otherwise. This is an indication that the ARJ program is still not fixed...
Quoting Aesma (Reply 6):Instead Comac is saying they won't even try to certify the C919 in the West !
The problem is that the ARJ-21 was to be the enabler for Western C919 certification, as the FAA was conducting a shadow certification of that airplane and monitoring the CAAC throughout the process. If only for that reason, certifying the ARJ-21 was strategically crucial even if commercially unsuccesful. Giving up Western certif on the C919 is implicitly acknowledging that this shadow certifcation has failed.
And I agree with you that even if the a/c were never to sell in the West, an FAA / EASA "stamp" on it would give it - and the Chinese aviation industry - valuable credibility for other markets.
strfyr51 wrote:r2rho wrote:Quoting lightsaber (Reply 2):I've never heard of a production license following certification by 7 months?!?
It never occurred to me that the two wouldn't be done in parallel.
Indeed. I guess we are so accustomed to to seeing them done in parallel that we cannot imagine otherwise. This is an indication that the ARJ program is still not fixed...
Quoting Aesma (Reply 6):Instead Comac is saying they won't even try to certify the C919 in the West !
The problem is that the ARJ-21 was to be the enabler for Western C919 certification, as the FAA was conducting a shadow certification of that airplane and monitoring the CAAC throughout the process. If only for that reason, certifying the ARJ-21 was strategically crucial even if commercially unsuccesful. Giving up Western certif on the C919 is implicitly acknowledging that this shadow certifcation has failed.
And I agree with you that even if the a/c were never to sell in the West, an FAA / EASA "stamp" on it would give it - and the Chinese aviation industry - valuable credibility for other markets.
according to Aviation week EASA is monitoring the C919 but Not the FAA. So? It won't be certified in the USA for the moment. Can't say forever
c933103 wrote:Have the ARJ21 gained production certificate yet? I was searching for relevant news but there are barely any updates, other than when the second frame get delivered to Chengdu, they said they would like to have PC in 2016 Oct, and a new from 2017 April that said the certification center were reporting to CAAC deputy head regarding the certification process of ARJ21's production certificate. I take that as they still does not have its production certificate?
c933103 wrote:http://bbs.wenxuecity.com/military/1430868.html
It said that #107, #108, #109, #110, #111 are currently under different stage of assembly as they will be getting quantitative production certification in upcoming recent times, and they planned to make up to 6 planes simultaneously in the year and deliver all of them within the year. #110 will be a Bizjet for Yan Shang Groip
And it is said that they are constructing another factory at Pudong, and adding two manufacturer base together the annual manufacturing capacity would be 30/year
Flighty wrote:I think people are being unrealistic. China is at the beginning of a long road. In 75 years, they will be building competitive jets, you wait.
Flighty wrote:I think people are being unrealistic. China is at the beginning of a long road.
Aesma wrote:Flighty wrote:I think people are being unrealistic. China is at the beginning of a long road.
If you mean Chinese people then I agree.
But they're not at the beginning of a long road, they have been building airplanes since WW2. They don't need time they need to learn from previous mistakes.
lightsaber wrote:Why would you split production for such tiny numbers. Generally, economics of scale keep improving to about 200 to 400 per year. After that, the driving distances to move parts and people around justify a 2nd site.
Lightsaber
VSMUT wrote:Where is the first FAL located, and where will the new one be placed? It isn't completely unthinkable that the existing factory might have been one of the root-causes in the ARJs problems, and by moving the FAL to a more competent facility they could solve a whole bunch of troubles.
The orders issue isn't harder than that the Peoples government could just place a massive order for several hundred in one go and impose them on the Chinese airlines. They have the ability to do so. Seeing how obsolete the design is gradually becoming, it would probably be COMACs best chance at saving something from this sorry saga.
The Comac ARJ21 regional jet has completed a year of commercial operations, however the manufacturer has still yet to receive a production certificate for the aircraft.
Launch customer Chengdu Airlines first deployed MSN 106 on the Chengdu-Shanghai route on 28 June 2016. The carrier now has two ARJ21s in service, operating 16 sectors weekly from Chengdu to Changsha and Shanghai.
77west wrote:Overthecascades wrote:China is better than this, as they have proven with the C919. Stop stealing other people's designs.
And it is said that they are constructing another factory at Pudong, and adding two manufacturer base together the annual manufacturing capacity would be 30/year
Comac has received the production certificate for its ARJ21-700 regional jet, more than 2.5 years after the aircraft received type certification.
This was presented to the Chinese manufacturer by the Civil Aviation Administration of China (CAAC) in a ceremony on 9 July, signifying that the aircraft can now enter batch production.
Comac is moving ahead with plans for volume production of the ARJ21, while working to overcome what officials acknowledge as shortcomings in the regional jet’s reliability. Although only two ARJ21s have entered service since the type’s first delivery in November 2015, a further five will be handed over this year, a program source says. A long-planned executive-transport version will fly in 2018.
INFINITI329 wrote:Im confused.... if it's not allowed to fly into western markets why was it allowed to land Vienna & Athens?