AD/CONVAIR/12 - Main Landing Gear Piston/Axle Assemblies (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 39.001(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/12 Main Landing Gear Piston/Axle Assemblies 5/2006

Applicability: Model 340 and 440 aircraft, and all such model aircraft converted to turbopropeller power. Requirement: 1. Inspect main landing gear Piston/Axle Assemblies part number 528039 with 10,000 or more hours time in service for crack indications in the fillet radius area between the axle and the outboard face of both brake attachment flanges, by dye penetrant inspection procedures; in accordance with Part I of General Dynamics 640 (340D) Service Bulletin (SB) No.32-3, dated 31 October 1969, or by magnetic particle inspection procedure.

2. If no cracks are detected, repeat the Requirement 1 inspection.

The Requirement 2. 1,000 hour inspection interval may be terminated when the inspection area identified above has been reworked in accordance with paragraphs C, D, and E of Part II of SB 32-3.

Subsequent to the accumulation of 2,000 hours time in service after the rework, and before 2,500 hours time in service after rework, perform a Requirement 1 inspection for cracks. If no cracks are detected during this inspection, further inspections are not required by this Directive.