AD/BN-2/83 Amdt 1 Horizontal Stabiliser Attachment Bolts (Cth)

AIRWORTHINESS DIRECTIVE

On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/BN-2/83 and issues the following 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.

Pilatus Britten-Norman BN-2 Series Aeroplanes

AD/BN-2/83 Amdt 1 Horizontal Stabiliser Attachment Bolts 10/2005

Applicability:

Models BN2, BN2A, BN2B, BN2T, BN2T-4R, and BN2T-4S series islander aircraft.

Requirement:

Inspect the horizontal stabiliser attachment bolts and anchor nuts in accordance with B-N Group Service Bulletin No. 302 Issue 1 or Issue 2, or later EASA approved revision.

Incorporation of B-N Group Ltd Modification NB-M-1787 constitutes terminating action for the requirements of this Directive.

Note:  UK CAA AD G-2004-0014 R1 refers.

Compliance:

Unless the initial inspection is already accomplished, within 50 hours time in service or 2 months after 21 July 2004, whichever occurs first, and thereafter at intervals not to exceed 1,000 hours time in service; until incorporation of Mod. NB-M-1787.

The compliance times remain unchanged by this issue.

This Amendment becomes effective on 29 September 2005.

Background:

The manufacturer received several reports of loose horizontal stabiliser attachment bolts.

Amendment 1 is issued in response to a revision of the related CAA AD, which introduces terminating action for the repetitive inspections.

David Villiers
Delegate of the Civil Aviation Safety Authority

9 August 2005