A 7.62x39 round may penetrate an aluminum tube moving 130 knots 300+ feet away. However highly unlikely, the impact angle and terminal velocity of the bullet at those speeds, distances and angles deflects "ricochets" it away.
The bad guys might get lucky with small arms fire.
Just saying these terrorists have some big guns. Not your standard AK47
What i've seen from personal experience, small arms leave scrape marks on the fuselage.