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.
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
I need to structure the response to address the user's query while educating them about actual Antonov models. Start with a friendly correction, explain the possible confusion, then outline the real models and their best features. Make sure to highlight the An-225's record as the heaviest aircraft, the An-124's transport capabilities, and maybe the An-148 for regional travel. Conclude by inviting the user to clarify if they meant something else. Keep tone helpful and informative. Could it be the An-124