AD/B737/344 - Nacelle Strut Midspar Fitting Fuse Pins (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.

Boeing 737 Series Aeroplanes AD/B737/344 Nacelle Strut Midspar Fitting Fuse Pins 13/2008

Applicability: All Model 737-300, -400, and -500 series aircraft. Requirement: Action in accordance with the technical requirements of FAA AD 2008-21-03 Amdt 39-15687.

Note: Boeing Special Attention Service Bulletin 737-54-1044 dated 10 December 2007, refers. Compliance: As specified in the Requirement document, with a revised effective date of 18 December 2008. This Airworthiness Directive becomes effective on 18 December 2008. Background: The FAA received a report of corrosion damage of the chrome runout on the head side on all four midspar fuse pins of the nacelle strut. Additionally, a large portion of the chrome plate was missing from the corroded area of the shank. This Directive requires repetitive inspections for discrepancies of the fuse pins of the inboard and outboard midspar fittings of the nacelle strut.

David Villiers Delegate of the Civil Aviation Safety Authority

28 October 2008