The A3-A is the dedicated air to air variant of the A3S.

This plane includes a new thrust vectoring system and supermaneuverability.

The A3-A has a high agility mode (AG1) that enabled it tp perform high speed turns (don't use this under 1000kmh unless you want to do a post stall maneuver).
Aas said before the agility mode can also be used to perform post stall maneuvers such as the cobra maneuver.
To perform a cobra turn on AG1 then slow the aircraft to 300kmh then apply throttle once it reaches 400-500kmh pull the stick.

This plane also has realistic missile and a very powerful cannon.

AG1 = High Agility mode
AG2 = Exterior lights
AG3 = Release all weapons
AG4 = Activate Gyroscope
VTOL = Flaps
Trim = Vertical Trim.
Service Ceiling = 10000km / 32000ft.