AeroSpace Technologies of Australia Pty Ltd. SUBJECT: Wing Fittings SUMMARY: The FAA adopts a new airworthiness
directive (AD) for all AeroSpace Technologies of Australia Pty Ltd.
(ASTA) Models N22B, N22S, and N24A airplanes. This AD requires you
to repetitively inspect wing fittings for fatigue defects, replace
or correct defective wing fittings, and replace the stub wing front
spar assembly and wing fitting when fatigue life limits are
reached. This AD is the result of mandatory continuing
airworthiness information (MCAI) issued by the airworthiness
authority for Australia. The FAA is issuing this AD to detect and
correct defects in the wing strut upperend fittings, wing strut
lower end fittings, stub wing strut pick up fittings, and the stub
wing frontspar assembly. These defects could result in failure of
the fittings or spar assembly and lead to reduced structural
capability or reduced controllability of the airplane.