[ercoupe-tech] AD 57-02-01 Quastion

[heavensd]

This AD checks for the failure of the rudder horn attachments and requires
the application of 10 pounds to the edge of the rudder, while controls are
locked in neutral position. A deflection of more than 1/2 inch or a
"clicking" noise in the vicinty of the center rudder hinge are NO PASS
indications, requiring furher action.
Has this AD been superseded, or is it still vaild?
Has anybody ever found anything while doing it?
Thanks
Eliacim