Document ID: chunk:federal_register_of_legislation:F2008L02819:body:0:p1
Version: federal_register_of_legislation:F2008L02819
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Character Range: 0–3713

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 767 Series Aeroplanes
AD/B767/244  Auxiliary Fuel Tanks  9/2008

Applicability:  Model 767 aeroplanes equipped with auxiliary fuel tanks installed in accordance with specified United States Federal Aviation Administration (FAA) Supplemental Type Certificates (STC) as follows:
                Aeroplane Series                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Auxiliary Tank STC
      767-200   SA5544NM
Requirement:    Deactivate the auxiliary fuel tanks, in accordance with an approved deactivation procedure.  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 should be included in the deactivation procedure.
                Note 2:  FAA AD 2008-12-03 Amdt 39-15546 refers.
Compliance:     On or before 16 December 2008.
                This Airworthiness Directive becomes effective on 28 August 2008.
Background:     This Directive requires deactivation of Rogerson Aircraft Corporation auxiliary fuel tanks.  The Directive results from fuel system reviews conducted by the manufacturer, which identified potential unsafe conditions for which the manufacturer has not provided corrective actions and 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

16 July 2008

Appendix A - Auxiliary Fuel Tank Deactivation Criteria

The auxiliary fuel tank deactivation procedure required by this Directive should 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 applicable, float switches, and all other electrical connections required for auxiliary tank operation, and stow them at the auxiliary tank interface.

   3. Disconnect all pneumatic connections if applicable, cap them at the pneumatic source, and secure them.

   4. Disconnect all fuel feed and fuel vent plumbing interfaces with aeroplane original equipment manufacturer (OEM) tanks, cap them at the