COMAC C929 Widebody Airliner

pmc

Major
Registered Member
Certification follows product design, not production quality. If your production process isn’t tightly controlled to meet the same quality as your verification prototypes certification is a meaningless indicator of reliability.
where is product deficiency example?. SSJ is now used in Russia/Middleast flights. if these things not on time and always available to airlines they wont using it. Those Middleastern hubs are expensive and tough dealing with un reliable planes. planes need to have strong reliable air-conditioning system. every thing need to work in perfection. These airlines could afford Airbus A-380 and B 747-8 more than the others. on current inflationary prices that Jets will be $600m.
 

latenlazy

Brigadier
where is product deficiency example?. SSJ is now used in Russia/Middleast flights. if these things not on time and always available to airlines they wont using it. Those Middleastern hubs are expensive and tough dealing with un reliable planes. planes need to have strong reliable air-conditioning system. every thing need to work in perfection. These airlines could afford Airbus A-380 and B 747-8 more than the others. on current inflationary prices that Jets will be $600m.
Without knowing what servicing times, servicing costs, and availability look like it’s hard to know if these purchases are actually competitive in reliability and quality or if the airlines are just dealing with a mediocre situation because they’ve already committed by their purchases. You can tell a lot by whether there are subsequent rounds of orders for a new plane after the initial order. Anyways, I myself don’t have strong opinions about the quality of Russia’s new commercial planes. I’m just pointing out why the indicators you’re bringing up aren’t actually demonstrating or proving what you think they are.
 

pmc

Major
Registered Member
Without knowing what servicing times, servicing costs, and availability look like it’s hard to know if these purchases are actually competitive in reliability and quality or if the airlines are just dealing with a mediocre situation because they’ve already committed by their purchases. You can tell a lot by whether there are subsequent rounds of orders for a new plane after the initial order. Anyways, I myself don’t have strong opinions about the quality of Russia’s new commercial planes. I’m just pointing out why the indicators you’re bringing up aren’t actually demonstrating or proving what you think they are.
You are analysis are based on past performance of cheap credit from Western leases, mass production at multiple production site, low input prices, globalized engineering. All those factors are going to be reversed very fast. Airplanes from Airbus/Boeing will become so expensive that only few percentage of population will afford it.
that reality is now hitting the airlines.
Russia has its own unique approaches to aviation and they are implementing it consistently both on older generation upgrades Tu-214/IL96 and newer planes SSJ/MS21 simultaneously that no one other country can replicate. They developed planes that can deal with extreme weather and extreme elevations from the beginning.
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latenlazy

Brigadier
You are analysis are based on past performance of cheap credit from Western leases, mass production at multiple production site, low input prices, globalized engineering. All those factors are going to be reversed very fast. Airplanes from Airbus/Boeing will become so expensive that only few percentage of population will afford it.
that reality is now hitting the airlines.
Russia has its own unique approaches to aviation and they are implementing it consistently both on older generation upgrades Tu-214/IL96 and newer planes SSJ/MS21 simultaneously that no one other country can replicate. They developed planes that can deal with extreme weather and extreme elevations from the beginning.
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Servicing downtime and servicing frequency are not based on cheap credit. They’re based on the mechanical performance of the plane.
 

pmc

Major
Registered Member
Servicing downtime and servicing frequency are not based on cheap credit. They’re based on the mechanical performance of the plane.
Middleast and Central Asia is test case of Aircraft performance. if there is no down time for SSJ in those locations than Russian knows how to make plane that match operational performance of Airbus/Boeing. just one airline has such diverse route map. All Superjets.
It has Istanbul also in the route. among world busiest airport now.
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latenlazy

Brigadier
Middleast and Central Asia is test case of Aircraft performance. if there is no down time for SSJ in those locations than Russian knows how to make plane that match operational performance of Airbus/Boeing. just one airline has such diverse route map. All Superjets.
It has Istanbul also in the route. among world busiest airport now.
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A flight number doesn’t tell you anything about frequency of downtime. It might surprise you to know that the same flight number is serviced by multiple planes. The plane you get on for the same flight number one day is not always the same plane you get onto another day.
 

pmc

Major
Registered Member
A flight number doesn’t tell you anything about frequency of downtime. It might surprise you to know that the same flight number is serviced by multiple planes. The plane you get on for the same flight number one day is not always the same plane you get onto another day.
the extent of there route network and long distances will tell you that are confident about there operational efficiency. there will be alot of complaints if it has unscheduled down time. it is not like they have surplus aircraft that they continuously replace one after another due to down time.
here is another SSJ airline that has extensive route network including big hubs of Dubai and Istanbul. in big hubs people visit for connecting flights. so it needs to make sure the flight arrive on time 100% . it is not just remote regions.
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pmc

Major
Registered Member
Er…actually that’s exactly how all airlines work.
i gave you two separate airline example. and they are connecting to extremely busy hubs. one of them get superhot in summer. if an airline planes cannot be maintained in top notch condition all the time. airlines will not even attempt to schedule flights to such place.
you made claim regarding Production Process without presenting any evidence how it is impacting mechanical performance of SSJ that will prevent it from one time arrival.

Certification follows product design, not production quality. If your production process isn’t tightly controlled to meet the same quality as your verification prototypes certification is a meaningless indicator of reliability.
 

latenlazy

Brigadier
i gave you two separate airline example. and they are connecting to extremely busy hubs. one of them get superhot in summer. if an airline planes cannot be maintained in top notch condition all the time. airlines will not even attempt to schedule flights to such place.
you made claim regarding Production Process without presenting any evidence how it is impacting mechanical performance of SSJ that will prevent it from one time arrival.
Your examples don’t disprove that all airlines keep a surplus of planes to rotate in and out for service, so whether a flight number flies consistently tells us absolutely nothing about what the service downtime and frequency of a plane is. Evidence is pretty useless if you don’t have a good conceptual understanding of what you’re talking about. In this case that basic conceptual understanding you seem to be missing is the particulars of fleet management, which is one of the primary factors shaping buying decisions for airliners. Mechanical performance is not an issue for on time arrival. It’s an issue for lifetime operations costs. Less reliable planes either means you have to limit your route frequencies where that plane is used, or it means you need to buy more planes to fill in for schedule rotations to compensate for downtime frequency and duration.

Certification doesn’t tell you anything about product reliability. It just means that the plane passed a bunch of safety benchmarks. Let me try a simple analogy here. Both a Ford Focus and Toyota Corolla are certified products. Does that mean the Ford is as reliable as the Toyota?
 
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