Eyad89 wrote:sxf24 wrote:
Delta is very good at negotiating guarantees and Airbus is, historically, good at overpromising and underdelivering on performance.
yet, all airline CEOs who were asked about the A350 said that it beat the initial expectations, and that list includes the CEO of QR who's notoriously difficult to please.sxf24 wrote:
This is usually settled with MTOW upgrades or discounts on future airplanes.
Airbus's MTOW upgrades a few years after EIS shows that the plane can take a higher structrual load than first promised. This is pretty much a proof that Airbus overdelivers.
How are you using that to prove the opposite?
Also, They increased the length of the A359's winglets a couple of years after EIS because they found that the wing can take more load than expected.
BTW, both of A330NEO and A320NEO are beating fuel burn expectations as well.
There’s no correlation between beating expectations or initial marketing specs and meeting performance guarantees. Each guarantee is negotiated individually based on that specific airline’s operations and expectations. Airbus is more aggressive in providing guarantees than Boeing. Both produce airplanes that exceed initial expectations.