AD/AE 3007/4 Starter Adapter Drain (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.

Rolls Royce (Allison) Turbine Engines - AE 3007 Series

AD/AE 3007/4 Starter Adapter Drain 4/2005

Applicability:

Rolls Royce (Formerly Allison Engine Company, Inc.) AE 3007A and AE 3007C series turbofan engines.

Note 1:  These engines are installed on but not limited to Embraer EMB-l45 and Cessna 750 series aeroplanes.

Requirement:

Action in accordance with FAA AD 99-02-51.

Alternative means of compliance.

Installation of a single orifice or multi orifice restrictor which replaces the starter adapter drain cap assembly is approved as an alternative means of compliance to the requirements detailed in FAA AD 99-02-51.  The approved restrictor part numbers are:

For AE3007A engines: Part Number (P/N) 23074840, 23074537 and 23075806.

For AE3007C engines: P/N 23074840 and 23076015.

Note 2:  FAA AD 99-02-51 Amdt 39- 11108 refers.

Compliance:

Unless previously accomplished not late than 14 May 2005.

This Airworthiness Directive becomes effective on 14 April 2005.

Background:

This Directive is prompted by reports of in-flight engine shutdowns.  The in-flight engine shutdowns have been attributed to loss of engine oil from the starter shaft seal.  The actions specified by this Directive are intended to prevent an in-flight engine shutdown due to loss of engine oil.  This Directive also allows for the modification of the starter drive adaptor pad drain with an approved orifice as an alternative to the procedures detailed in the referenced FAA AD.

James Coyne
Delegate of the Civil Aviation Safety Authority

2 March 2005