AD/J4100/6 - Wing Upper Splice Plate (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.

BAe Systems (Operations) Jetstream 4100 Series Aeroplanes AD/J4100/6 Wing Upper Splice Plate 4/2008 DM

Applicability: All Model Jetstream Series 4100 aircraft, construction numbers 41004 through 41096, and 41102 through 41004, on which either:

Service Bulletin (SB) J41-57-019 or equivalent inspection has not been carried out; or,

SB J41-57-019 or equivalent inspection has been carried out and the wing upper splice plates have an eddy current reading of less than 35.0% IACS.

Note: Aircraft construction numbers 41097 through 41001 were inspected during production and do not require additional action. Requirement: 1. Accomplish an eddy current inspection of the wing upper splice plate part number 14157126-3 in accordance with the instructions of British Aerospace Regional Aircraft SB J41-57-019 original issue, or Revision 1, or later EASA approved revision; or using an equivalent approved procedure.

Note 1: Wing upper splice plates that have an eddy current reading at or above 35.0% IACS require no further action.

2. On aircraft that have an eddy current reading of less than 35.0% IACS, accomplish the borescope inspection of the wing upper splice plate part number 14157126-3 in accordance with paragraphs 2.A. and 2.B. of BAE Systems (Operations) Limited SB J41-57-020 Revision 1, or later EASA approved revision.