Document ID: chunk:federal_register_of_legislation:F2009L03938:body:0:p1
Version: federal_register_of_legislation:F2009L03938
Segment Type: other
Provision Reference: 
Character Range: 0–3387

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.

Boeing 727 Series Aeroplanes
AD/B727/219  Auxiliary Fuel Tanks  12/2009

Applicability:  Model 727-281 aeroplanes equipped with auxiliary fuel tanks installed in accordance with United States Federal Aviation Administration (FAA) Supplemental Type Certificate (STC) SA3449NM.
Requirement:    Deactivate the auxiliary fuel tanks, in accordance with a procedure approved by:

                    Manager, Continuing Airworthiness
                   Airworthiness and Engineering Branch
                   Civil Aviation Safety Authority
                   GPO Box 2005
                   Canberra ACT 2600

                   Facsimile 07 3144 7388.
                Any auxiliary tank component that remains on the aeroplane must be secured and must have no effect on the continued operational safety and airworthiness of the aeroplane.  Deactivation may not result in the need for additional instructions for continued airworthiness.
                Note 1:  Appendix A of this Directive provides criteria that might need to be included in the deactivation procedure.  Timely approval is dependent on early submittal of the deactivation procedures.
                Note 2:  For technical information, contact Dan Zevallos, Director of Program Management, Rogerson Aircraft Corporation, 2201 Alton Parkway, Irvine, California 92606 USA; telephone 0011 1 949 442-2306; fax 0011 1 949 442-2322.
                Note 3:  FAA AD 2009-20-01 Amdt 39-16024 refers.
Compliance:     Within 90 days after the effective date of this Directive.
                This Airworthiness Directive becomes effective on 19 November 2009.
Background:     This Directive requires deactivation of Rogerson Aircraft Corporation auxiliary fuel tanks.  This Directive results from fuel system reviews conducted by the manufacturer, which identified potential unsafe conditions but has not provided associated corrective actions.

   The Directive is issued to prevent the potential of ignition sources inside fuel tanks, which, in combination with flammable fuel vapours, could result in fuel tank explosions and consequent loss of the aeroplane.

James Coyne
Delegate of the Civil Aviation Safety Authority

30 September 2009

Appendix A - Deactivation Criteria

The auxiliary fuel tank deactivation procedure required this AD might need to address the following actions.

   1. Permanently drain auxiliary fuel tanks, and clear them of fuel vapours to eliminate the possibility of out-gassing of fuel vapours from the emptied auxiliary tank.

   Note:  If applicable, removing the bladder might help eliminate out-gassing.

   2. Disconnect all electrical connections from the fuel quantity indication system (FQIS), fuel pumps if