If the model doesn't exist, the post should correct that and maybe suggest similar models. Alternatively, if there's a new one, but I don't have info on that. I should proceed by noting that the An-990 isn't real and provide info on prominent Antonov aircraft, perhaps the An-225 as the largest. Also, mention the An-124, An-148, etc., and explain their features. That way, the post stays accurate even if the original premise is incorrect.
Looking up Antonov aircraft models, the An-990 isn't listed. The most recent models are maybe in development. The user might have confused the model number. Common errors include mixing digits, like An-990 vs. An-225. Another possibility is that the user is referring to a different aircraft altogether but misstated the model. antonov an990 best
Could it be the An-124? Some people might refer to it with a different number. Or maybe it's a newer model not well known? Alternatively, the user might have meant something else. Let me verify through available data. If the model doesn't exist, the post should