Aerobird, unresponsive
A few other AB mods are 2 screws either side to hold the plastic frame in place that holds the circuit board, wire threaded through fuse and wrapped around tail boom as well as a cable tie and epoxy inside and outside, an access hole to adjust servos, an extra external elastic band to hold the canopy closed, also taped across the hinge joint, a cable tie in front of the motor to save it sliding forward.