AD/PZL/5 Amdt 4 Centre Wing to Outboard Wing Attachment Joints (Cth)

AIRWORTHINESS DIRECTIVE On the commencement date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below repeals Airworthiness Directive (AD) AD/PZL/5 Amdt 3 and issues the following AD under subregulation 39.001 (1) of CASR and subsection 33 (3) of the Acts Interpretation Act 1901. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct an 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.

Polskie Zaklady Lotnicze M18 (Dromader) Series Aeroplane AD/PZL/5 Amdt 4 Centre Wing to Outboard Wing 4/2019 Attachment Joints

Applicability: All Models of Polskie Zaklady Lotnicze (PZL) M18, M18A, and M18B aircraft. Requirement: 1. Inspect the wing attachment joints, including the fore and aft faces of each lug, in accordance with Section 5.4.3 Verifying inspection, verifying inspection scope item 1 of the PZL Mielec Airplane Description and Service Manual (pages 5-14), dated 20 September 2013, as in force at the date of commencement of this AD. (i) For Section 5.4.3 Verifying inspection, verifying inspection of the PZL Mielec Airplane Description and Service Manual (pages 5-14), the non-destructive inspection method used must be the magnetic particle inspection method detailed in Section 4.27 of the PZL Mielec Airplane Description and Service Manual or an alternative magnetic particle inspection approved by CASA in writing. (ii) Perform the following after each inspection: a. Repair any corrosion damage found to the extent allowed in the PZL Service Bulletin E/02.170/2000 dated 3 August 2000, as in force at the date of commencement of this AD, and apply anticorrosion protection whether or not corrosion damage is found; b. Replace the wing attachment joints if found cracked or if the corrosion damage is more than is specified in PZL Service Bulletin No. E/02.170/2000 dated 3 August 2000, as in force at the date of commencement of this AD; c. Eliminate any ovalisation of the wing attachment joint main holes using the procedure specified in PZL Service Bulletin No. E/02.170/2000 dated 3 August 2000, as in force at the date of commencement of this AD. 2. Inspect, using magnetic particle method detailed in Section 4.27 of PZL Mielec Airplane Description and Service Manual dated 20 September 2013, as in force at the date of commencement of this AD, or an alternative magnetic particle inspection approved by CASA in writing, the centre wing to outboard wing attachment joints for cracks in the lugs, corrosion in the main holes, faces and surfaces, and ovalisation of the main holes in accordance with PZL Service Bulletin No. E/02.170/2000 dated 3 August 2000, as in force at the date of commencement of this AD, and perform the following after each inspection: