Just a heads-up...
Besides keypad 1 or 3, pressing down on the controller also changes form from robot to aircraft.
Also, when in aircraft mode, pressing in the 180 degree opposite direction the aircraft is flying will change the aircraft form back to robot; whether it's pressing the controller east when flying west, pressing the controller west when flying east, pressing south when flying north or, north when flying south, the transformation will take place.
90 degree intervals prevents the change and maintains the aircraft form (I.E. Heading left and pressing up or down, heading up and pressing left or right, etc.) However, if the aircraft hits an object: a wall, ceiling, or floor, it will transform the aircraft back to robot.
Okay. Thanks. So, modded Jag, standard and Super Action Controller work without extension cord. Modded Famicom controller without extension cord acts the same as standard controller with extension cord (move right causes form change).