71-04-03 AMERICAN AVIATION: Amdt. 39-1155. Applies to American Aviation Corp., Model AA-1, certificated in all categories S/N AA1-0001 through AA1-0432.
(a) Within the next 10 hours in service after the effective date of this AD unless already accomplished, inspect and test the nose gear strut in accordance with the procedures of American Aviation Service Bulletin No. 121A dated 1/8/71 or with an equivalent method.
(b) Replace defective parts prior to further flight with a part received from the manufacturer after 1 June 1970 or inspected and tested in accordance with this directive.
(c) Equivalent methods and parts must be approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region.
This airworthiness directive is effective February 25, 1971 and was effective as to all recipients of the letter dated January 12, 1971 which contained this airworthiness directive.