UPDATED
more stable when doing Pylon manuver and shooting while flying
AC-47 "SPOOKY"
The Douglas AC-47 Spooky was the first in a series of gunships developed by the United States Air Force during the Vietnam War.
It was designed to provide more firepower than light and medium ground-attack aircraft in certain situations when ground forces called for close air support.
Features:
In total of 3 Mini Guns

CAPABLE OF PLYON MANUVER
The first notable combat use of the pylon turn was in the Vietnam War in 1964,[2] with the development of the AC-47 Spooky gunship, which could fire miniguns mounted on the left side of the aircraft as the pilot circled the target. Later, the more advanced Lockheed AC-130 was used in the same way.

HOW TO DO IT?
-Slide the Vtol Pitch control down
-Tilt the plane Left
-Go to Gunner Camera to aim
-Keep the plane tilted in the angle you want