It just means their test management process is inefficient. This is also part of the learning curve for developing products. As they figure out better prices and management the speed should increase.
Good news is this isn’t a technology issue. They can still keep iterating on tech while they figure out how to do the organization and soft skills part of the industry better.
Is this report even accurate?
A lot of hype. China and commercial aircraft in the early 2020s is like Maoist China and agriculture & steel in the 1950s.
Look. The silver lining is that at least the problem is only for certification tests (still serious but not the end of the world)
Where do you buy this drug? I sure need some of it right now
Why don't they just perform the necessary tests? Is it from some official sources? The deliveries may start soon.
Better prices should say better practices*
Testing involves setting up conditions, preparing your units for testing, collecting data, and then doing analysis. It’s not that they don’t “just” perform the necessary tests but that their process isn’t fast or efficient enough to meet their ambitious schedule. This is largely an experience problem.
Is it technical, I don't know. The huge delay of ARJ-21 was because officials didn't know how to certify an aircraft.