AD/BAe 146/125 Centre Fuselage Top Aft Longeron at Rib '0' (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.

British Aerospace BAe 146 Series Aeroplanes

AD/BAe 146/125 Centre Fuselage Top Aft Longeron at Rib '0' 10/2006 DM

Applicability:

All Model BAe 146 series aircraft.

Requirement:

Action in accordance with the requirements of EASA AD 2006-0215.

Note:  BAE SYSTEMS Inspection Service Bulletin 53-173 Revision 2, or later EASA approved revision, refers.

Compliance:

As specified in the Requirement document.

This Airworthiness Directive becomes effective on 31 July 2006.

Background:

Cracking has been found on the centre fuselage top aft longeron at Rib ‘0’ on an in-service aircraft.  Subsequent investigation has indicated that the currently defined threshold and repeat inspection period must be reduced, and the area of inspection expanded for the BAe 146 series 100 and 200.  For the series 300, only the repeat inspection period must be reduced, and the area of inspection expanded.

David Villiers
Delegate of the Civil Aviation Safety Authority

27 July 2006