81-15-01 SWEARINGEN: Amendment 39-4163. Applies to Swearingen Models SA226-T, S/N T201 through T275 and T277 through T291; SA226-AT, S/N AT001 through AT074, and SA226-TC, S/N TC201 through TC407 airplanes certificated in all categories. Compliance required within the next 200 hours' time in service, after the effective date of this AD, unless Swearingen Bulletin SB53-006 issued November 27, 1980, has been accomplished. (Airworthiness Docket No. 80-ASW-54.)
Inspect the lower wing-to-fuselage aerodynamic fairing stiffeners, the attached grommets, and the lower fuselage pressure vessel skin for deterioration, wear, or damage. Repair any damaged areas and modify the structure in accordance with Swearingen Service Bulletin SB53-006 issued November 24, 1980, or equivalent means approved by the Chief, Engineering and Manufacturing Branch, FAA, Southwest Region.
A special flight permit may be issued in accordance with FAR 21.197 to allow flight of the aircraft to a location where this AD can be accomplished.
This amendment becomes effective August 15, 1981.