Federal Register of Legislation
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 39.001(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.
Kelowna Flightcraft (General Dynamics/Convair) Series Aeroplanes AD/CONVAIR/1 Horizontal Stabiliser Attachment Fitting Lugs 4/2006
Applicability: All model 340, 440, and all such model aircraft converted to turbopropeller power. Requirement: 1. Perform a visual inspection of the upper and lower, forward and aft, horizontal stabiliser attachment fitting lugs in accordance with the Accomplishment Instructions of General Dynamics, Convair Division, Service Bulletin 640 (340D) 55-3A, Revision 1.
2. Perform an ultrasonic inspection of the upper and lower, forward and aft, horizontal stabiliser attachment fitting lugs in accordance with the Accomplishment Instructions of Service Bulletin 640 (340D) 55-3A.
If cracks are found during any above inspection, replace with a new part before further flight.
3. Install bushings in the horizontal stabiliser attachment fitting lug holes in accordance with the Accomplishment Instructions of Service Bulletin 640 (340D) 55-3A.
4. Perform an internal visual inspection for cracks in the horizontal stabiliser attachment fittings, upper and lower, forward and aft, and associated structure outboard of the lugs and butt rib in the area surrounding the fasteners, in accordance with the Accomplishment Instructions of Service Bulletin 640 (340D) 55-4 Revision 1. Inspect for evidence of loose rivets or fasteners in the stabiliser attachment fittings with particular attention given to those just outboard of the butt rib which fasten the upper forward fittings to the spar web and rail.
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