AD/LA-4/23 Amdt 1 - Wing Fitting Carry Through Structure (Cth)

AIRWORTHINESS DIRECTIVE On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/LA-4/23 and issues the following AD under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Consolidated Aeronautics, Colonial and LA-4 Series Aeroplanes AD/LA-4/23 Amdt 1 Wing Fitting Carry Through Structure 10/2005

Applicability: All models. Requirement: Perform the modification, inspection and corrosion treatment of the wing carry through structure in accordance with the instructions contained in Aerofab Service Advisory No. A-001 Dated 4 May 1991 or later revision approved by the Type Certificate holder.

Note: The previous amendment of this AD required the wings to be removed to perform a corrosion inspection. This amendment does not require wing removal as the required inspection is now performed using a borescope inserted through a small hole in the wing carry through structure. Compliance: Initial modification and first inspection:

For aircraft inspected in the last 3 years to the original issue of this AD or previously inspected in accordance with an exclusion allowing the inspection to be carried out in accordance with Aerofab Service Advisory No A-001, accomplish the inspection and treatment no later than 3 years since the last inspection.