COMAC C919

ACuriousPLAFan

Brigadier
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from last year, COMAC started to source materials from local companies. C919 localization rate is also much higher what is actually in the public domain.
The publicly-held consensus for C919's localization rate at present is around 60%. How much is the actual localization rate, IYO?
 
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supersnoop

Major
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It got sanctioned once the western powers saw that they could not negotiate the Russian government out of a war. Sanctions are reactionary. P&W Canada wanted to sell the engines. It even did sell them a number but like so many other things from Trains to McDonalds. Once the Kremlin ordered the invasion.

MA700 is a Chinese plane. Canada wanted to look tough on commies like the Americans.
 

tphuang

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CJ-1000A is not second option what i have heard from my source. LEAP engine will fully replace as soon as possible.

Unless COMAC takes away the option of LEAP-1C, then CJ1000A is
China Should look into the PD-14 as a stopgap till the CJ-1000A is complete.
This is not military. This is commercial market. You actually need spare parts that can be maintained & supported. Or else, airlines can't fly your aircraft
I wonder if Airbus can be persuaded to qualify CJ1000 on A320 series? This would enable them to stay in the China market if LEAP is sanctioned. Alternatively SNECMA or whoever in Europe develop a US-free engine.
of course. everything is possible if someone is willing to pay the bill of getting it certified. And then, it's up to the airlines to choose it

Again, airlines have to choose CJ1000A. It's not as simple as Chinese govt telling MU to fly C919 with CJ1000A. They already have a fleet of C919 with Leap-1C and you are going to get them to have the other half with a completely unproven engine? After they've already taken the risk of flying a new plane with uncertain economics and serviceability?

sure, you can do it, but then you better subsidize the airline big time for taking such a big risk of using an unproven & likely less economic engine
 

Maikeru

Major
Registered Member
Unless COMAC takes away the option of LEAP-1C, then CJ1000A is

This is not military. This is commercial market. You actually need spare parts that can be maintained & supported. Or else, airlines can't fly your aircraft

of course. everything is possible if someone is willing to pay the bill of getting it certified. And then, it's up to the airlines to choose it

Again, airlines have to choose CJ1000A. It's not as simple as Chinese govt telling MU to fly C919 with CJ1000A. They already have a fleet of C919 with Leap-1C and you are going to get them to have the other half with a completely unproven engine? After they've already taken the risk of flying a new plane with uncertain economics and serviceability?

sure, you can do it, but then you better subsidize the airline big time for taking such a big risk of using an unproven & likely less economic engine
Well the alternative is to do nothing and then scramble for an alternative if LEAP is sanctioned.
 

tphuang

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Well the alternative is to do nothing and then scramble for an alternative if LEAP is sanctioned.
that's up to the airline to decide, right? Airline can always incorporate CJ1000A if LEAP does get sanctioned. But if you are CA and order 100 C919s, you can't have 30 of them out of service because your engine is having problems and can't get maintained.

Then you are basically bankrupt.

Remember, SSJ killed Interjet
 

sunnymaxi

Major
Registered Member
60% by what? Weight? Number of parts? Value in Yuan/Dollars?
I remember hearing similar localization rates with regards to the Sukhoi Superjet and we know how well localized that was. Basically the airframe.
as per their statement, 60 percent of C919 parts/components. this statement given during Zhuhai air show 2022.

this include all joint ventures manufactured in mainland China..
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i m very closely following C919 localization rate. process is going on with full pace. i think i should have post one by one. which component/part have localized already.
 
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sunnymaxi

Major
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Please read my older post i have Quote below. if anyone didn't read. very informative and give us the idea of C919 localization rate..

16 major Joint ventures were established in 2009-2015 time period. and there is a lot tech transfer happened during that time. all JVs were 50/50 partnership with local suppliers. western firms wanted market share and money hence happily join hands..


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Localization

A report by Zhongtai Securities showed that the localization rate of the C919 is around 60 percent. In 2017, Wu Guanghui, chief designer of the C919, told Caixin that the plane has millions of interfaces, which are related to the connection between multiple systems such as hydraulics and avionics. He said the design scheme of the aircraft is the core intellectual property of COMAC.

"Although the localization rate of the aircraft is around 60 percent, it is still a good start," Qi Qi, a market watcher said, explaining that making planes involves global division of labor and no country can build an aircraft all by itself.

during Zhuhai air show they confirmed about localization rate. reached at 60 percent by 2021-2022.
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this 60 percent include JVs with western suppliers currently producing in mainland. now what is the percentage of those JVs. this is secret between COMAC and that supplier. nobody can tell you. but if COMAC itself confirmed about 60 percent localization it means they have core technology of that component/part

for example. at the beginning cockpit was a joint venture in between AVIC and GE. as per the current update, GE withdrew.

Cockpit of the C919 currently producing two AVIC subsidies

AVIC Shanghai Aviation Electric Co., Ltd., and Shangdian Institute is AVIC Radio Electronics Research Institute

SEEC is solely responsible for the control panel components around the pilot and the dimming control system (CPAs&DCS) work package, which is the human-machine interface for the pilot to control; at the same time, it also provides the integrated circuit breaker board (ICBP) work package at the rear of the cockpit .

SEC is responsible for the cockpit display system and A664 network switch, which are the key subsystems and components of the avionics system. The most conspicuous ones are the five large LCD screens arranged in a T shape.

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another example. landing gear system of ARJ-21/C919

it was joint venture established by Liebherr and AVIC with 50/50 shareholding started operate in 2014 in Changsha city, Hunan province

in September 2016, Liebherr and AVIC completed and deliver first landing gear of ARJ-21 in China and all core parts were imported.

in September 2018, Liebherr and AVIC assembled and deliver first landing gear of C919 and all core parts were imported.

in 2019, Chinese local suppliers have replaced key forgings parts of the landing gear like main outer cylinder forgings and outer precision wheel hubs. those Chinese companies are Erzhong Wanhang and southwest Aluminum.


View attachment 113463

as you can see. initially COMAC happily imported core components in JVs coz they didn't have choice but as China continue to climbing up in value supply chain. they started to replace parts in JVs too..

Edit - i forgot to add. 16 major Joint ventures were established in 2009-2015 time period. and there is a lot tech transfer happened during that time. all JVs were 50/50 partnership with local suppliers. western firms wanted market share and money hence happily join hands.

most of Joint ventures are now sourcing components/material from local firms.

for example,

Landing Gear system was also a joint venture and up until 2019 they were importing all components and parts but that has changed now. in 2019, Chinese local suppliers have replaced key forgings parts of the landing gear like main outer cylinder forgings and outer precision wheel hubs. those Chinese companies are Erzhong Wanhang and southwest Aluminum..
 

sahureka

Junior Member
Registered Member
as per their statement, 60 percent of C919 parts/components. this statement given during Zhuhai air show 2022.

this include all joint ventures manufactured in mainland China..
------------------------------------------------------------------------------

i m very closely following C919 localization rate. process is going on with full pace. i think i should have post one by one. which component/part have localized already.
It's not like you change the turbofan of one model for another as easily as you change a wheel on a car.
For example, in the SSJ-100, to install the PD-8, the Russians also had to replace the pylon that supports it, then modifications to the control center + other modifications must be made.
The hypothesis of also re-engineering the SSJ-100s which are currently powered by the French/Russian SaM146 turbofan had been raised since the French side caused sanctions and stopped supplying spare parts, but at the moment research has led to the conclusion that the cost any changes would make the operation very expensive.
So either the aircraft is designed from the beginning with the possibility that it can receive different engine models, or it becomes very difficult to do so later when hypothetically the turbofan used until now due to external causes is no longer supplied or supported.
 

Zichan

Junior Member
Registered Member
My apologies if this question was answered before.

I was reading some comparisons between the C919 and the 320neo. While it is understandable that the latter would have the edge, what caught my eye is that the C919 loads less fuel than the original A320, even though it has a larger OEW. Furthermore, it embarks quite a bit fewer passengers. Somewhat surprisingly, the C919 falls far short of the original A320 in range, despite having more modern engines: 4200km vs 6100km.

Why is that the case?
 
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