AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/CESSNA 210/61 Amdt 1 and issues the following AD under subregulation 39.1 (1) of CAR 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. Cessna 210 Series Aeroplanes AD/CESSNA 210/61 Amdt 2 Wing Main Spar Carry-Through Section 4/2001 Applicability: All models with cantilever (unstrutted) wings. Requirement: 1. Gain access to the upper and lower surfaces of the wing carry through forging. 2. Inspect the whole wing carry-through forging for any indications of corrosion. Repairs to the wing carry-through forging shall be in accordance with a scheme approved by the Authority. Compliance: For the initial inspection, upon accumulating 10 years time in service since manufacture. Thereafter at intervals not to exceed 6 years, or, if the spar carry- through has been subjected to an approved corrosion protection scheme, at intervals not to exceed 12 years. This amendment becomes effective on 19 April 2001. Background: There have been reports of corrosion in the wing spar carry-through forging on a number of aircraft. In two cases the corrosion was sufficiently advanced to adversely affect the structural integrity of the wing. Amendment 1 reflected the reported results from the initial issue of this Directive which enabled a reduction in the initial compliance time and an extension of the repeat inspection period. Amendment 2 is issued to clarify the compliance requirements from the previous issue. This amendment does not impose any further technical requirements. Cessna 210 Series Aeroplanes AD/CESSNA 210/61 Amdt 2 (Continued) The Original issue of this Airworthiness Directive became effective on 20 April 1989. Amendment 1 of this Airworthiness Directive became effective on 4 October 1990. David Alan Villiers Delegate of the Civil Aviation Safety Authority 5 March 2001 The above AD is notified in the Commonwealth of Australia Gazette on 21 March 2001.