A new Airworthiness Directive (AD) for the American Champion Aircraft (ACA) 8KCAB Super Decathlon, effective immediately, will require inspection of the aileron hinge rib and support in accordance with ACA’s Feb. 17 service letter. The service letter and this AD were prompted by an incident in which a Super Decathlon with aileron hinge rib cracks experienced partial binding of the ailerons in flight.
Source: avwebUrgent AD For Super D