AD/INST/18 Collins Pn-101 Pictorial Navigation System Slaving Accessory 328a-3g 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/INST/18.

Instruments and Automatic Pilots

AD/INST/18 Collins PN-101 Pictorial Navigation System Slaving Accessory 328A-3G - Modification 3/2009

Requirement:

CANCELLED.

This AD is cancelled on 12 March 2009.

Background:

This unique Australian AD raised in 1975 against Collins Service Bulletin (SB)
No. 14 required a modification to the slaving accessory to prevent transistors from touching the cover of the unit.

Compliance was before 28 February 1976.

As production changes have altered both the positioning and mounting of the transistors, and all affected units would have been modified by now, this AD is considered to be no longer required.

James Coyne
Delegate of the Civil Aviation Safety Authority

27 January 2009