AD/ELECT/6 Magneto BTH Contact Breakers Assembly Modification Cancelled (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/ELECT/6.

Electrical Equipment

AD/ELECT/6 Magneto - BTH - Contact
Breakers Assembly - Modification 2/2009

Requirement:

CANCELLED.

This AD is cancelled on 12 February 2009.

Background:

This unique Australian AD raised prior to 1964 required a modification to all BTH type AG4, SG4 and MC1 magnetos fitted with contact breakers having an automatic earthing device by replacing with contact breakers that do not have this provision.

Compliance was before installation in an aircraft.

As all affected magnetos would have been modified by now, this AD is considered to be no longer required.

James Coyne
Delegate of the Civil Aviation Safety Authority

23 December 2008