AD/AL 250/20 Amdt 1 Fuel Pump Drive Shaft Inspection 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/AL 250/20 Amdt 1.

Allison Turbine Engines - 250 Series

AD/AL 250/20 Amdt 1 Fuel Pump Drive Shaft - Inspection 6/2009

Requirement:

CANCELLED.

This AD is cancelled on 4 June 2009.

Background:

This unique Australian AD raised in 1978 against Allison Commercial Service Letter (CSL) 250-C18 CSL-61 Rev. 3, or 250-C20/C20B CSL-1007, Rev. 3 required an inspection for excessive spline wear of engine dual element fuel pump drive shafts.

Compliance was:  Within 100 hours TIS after 30 September 1978 and thereafter at intervals not exceeding 200 hours TIS until modified in accordance with Allison
250-C18 CEB-161 or 250-C20/C20B CEB-1051.

This AD has been sufficiently promulgated for the affected engines to have been inspected and modified by now; therefore this AD is considered to be no longer required.

James Coyne
Delegate of the Civil Aviation Safety Authority

24 April 2009