AD/UNIVAIR/2 - Wing Centre Section (Cth)

AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (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.

Univair Corporation Ercoupe, Forney, Alon, and Mooney M10 Series Aeroplanes

AD/UNIVAIR/2 Wing Centre Section 3/2003

Applicability: All Alon Model A-2 and A2-A aircraft.

All ERCO Model 415-C, 415-CD, 415D, 415-E, and 415-G aircraft. All Forney Model F-1 and F-1A aircraft. All Mooney M10 aircraft.

Requirement: 1. Inspect the wing centre section for corrosion or corrosion damage in accordance with the Procedures section of Univair Aircraft Corporation Service Bulletin (SB) No. 31 dated 29 January 2002, or SB No. 31 Revision 1 dated 14 June 2002, and Advisory Circular 43-4A (Corrosion Control for Aircraft); by accomplishing one of the following:

1. Install inspection openings to gain access to the wing walkway box structure and inspect the wing centre section structure.

b. Use a scope and light source eg. fibrescope, boroscope, or endoscope to inspect the wing centre section structure.

c. Remove the outer wing panels to gain visual access to the wing walkway box structure.

2. If corrosion or corrosion damage is found during any inspection required in Requirement 1 of this Directive, repair or replace damaged components of the wing centre section structure in accordance with SB No. 31 or SB No. 31 Revision 1, the applicable maintenance manual and Advisory Circular 43-4A.