AD/CRESCO/10 - MLG Axles (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.

Pacific Aerospace Corporation Cresco Series Aeroplanes AD/CRESCO/10 MLG Axles 2/2007

Applicability: All Cresco 08-600 aircraft on restricted category agricultural operations fitted with main landing gear (MLG) axles part number (P/N) 08-40021-1, 08-40021-2, or 08-40021-3. Requirement: 1. For aircraft fitted with MLG axles P/N 08-40021-1 or P/N 08-40021-2.

Disassemble the MLG wheel assembly, clean the axles and remove as required, in accordance with Chapter 32 of Pacific Aerospace Corporation (PAC) Cresco 08-600 Maintenance Manual (MM).

a. Inspect the axles for security in accordance with the maintenance schedule in Chapter 05-10-00, page 615 of PAC Cresco 08-600 MM.

b. Visually inspect axles for cracks, paying particular attention to the shoulder radii, as detailed in Table 1 of PACSL/CR/06-1 Revision 1 and the instructions in PAC Cresco 08-600 MM Supplement PAC/CR/0442.

c. Inspect the MLG axles for cracks using an approved direct or indirect magnetic particle inspection method that is equivalent to ASTM Standard No. E-1444, and the maintenance schedule in Chapter 05-10-00 page 601, and the instructions in Chapter 32-10-00 page 602, paragraph c, of PAC Cresco 08-600 MM and PACSL/CR/06-1.