Originally Posted by iaflyer

I think what they said was that if the Max -10 can't get certified, they can replace it with the Max -9.

Now if it's just delayed a bunch... I don't know if they would buy the Max -9. It probably has slightly higher seat miles costs than the Max 10, but that's just a guess. If Boeing keeps say, "Van - I mean Max 10 airplane - will be there in 5 minutes, it just left the factory..." would Delta wait?