Division Boeing 737 Series Aeroplanes - AD/B737/350 - Auxiliary Fuel Tanks - Boeing 737 Series Aeroplanes

Boeing 737 Series Aeroplanes

AD/B737/350	Auxiliary Fuel Tanks	1/2009

<table cellspacing="0" cellpadding="0" style="margin-top:0pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Applicability:</span></p></td><td style="width:413.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-bottom:12pt"><span>This AD applies to the following aeroplanes fitted with the Auxiliary tank STC(s) listed in Table 1 of this AD.</span></p><p style="margin-top:12pt; text-align:center"><span style="font-weight:bold">Table 1</span></p><table cellspacing="0" cellpadding="0" style="width:100%; margin-top:0pt; margin-bottom:0pt; border:0.75pt solid #000000; border-collapse:collapse"><tbody><tr><td style="width:44.04%; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span>Aeroplanes</span></p></td><td style="width:55.96%; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span>Auxiliary tank STC(s)</span></p></td></tr><tr><td style="width:44.04%; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="margin-left:5.95pt"><span>Boeing Model 737-200 series aeroplanes</span></p></td><td style="width:55.96%; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="margin-left:8.3pt"><span>SA83NE, SA725NE (unless installed with SA725NE-D, Configuration 7), SA1078NE, SA1265EA</span></p></td></tr><tr><td style="width:44.04%; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="margin-left:5.95pt"><span>Boeing Model 737-200C series aeroplanes</span></p></td><td style="width:55.96%; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="margin-left:8.3pt"><span>SA725NE (unless installed with</span><br><span>SA725NE-D, Configuration 7)</span></p></td></tr><tr><td style="width:44.04%; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="margin-left:5.95pt"><span>Boeing Model 737-300 series aeroplanes</span></p></td><td style="width:55.96%; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="margin-left:8.3pt"><span>SA500NE, SA542NE, SA553NE, SA714NE, SA725NE (unless installed with</span><br><span>SA725NE-D, Configuration 7)</span></p></td></tr><tr><td style="width:44.04%; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="margin-left:5.95pt"><span>Boeing Model 737-400 series aeroplanes</span></p></td><td style="width:55.96%; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="margin-left:8.3pt"><span>SA553NE, SA725NE (unless installed with SA725NE-D, Configuration 7)</span></p></td></tr><tr><td style="width:44.04%; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="margin-left:5.95pt"><span>Boeing Model 737-500 series aeroplanes</span></p></td><td style="width:55.96%; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="margin-left:8.3pt"><span>SA725NE (unless installed with</span><br><span>SA725NE-D, Configuration 7), ST00040NY, ST01337NY</span></p></td></tr><tr><td style="width:44.04%; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="margin-left:5.95pt"><span>Boeing Model 737-700 series aeroplanes (increased gross weight)</span></p></td><td style="width:55.96%; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="margin-left:8.3pt"><span>ST00936NY-D (unless installed with Configuration 3), ST01650NY-D</span></p></td></tr><tr><td style="width:44.04%; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="margin-left:5.95pt"><span>Boeing Model 737-800 series aeroplanes</span></p></td><td style="width:55.96%; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="margin-left:8.3pt"><span>ST01384NY, ST01384NY-D</span></p></td></tr></tbody></table><p></p></td></tr><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Requirement:</span></p></td><td style="width:413.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:21.3pt; margin-bottom:12pt; text-indent:-21.3pt"><span>1.</span><span style="width:12.3pt; text-indent:0pt; display:inline-block"> </span><span>Submit a report to the Manager, Systems and New Technologies, Airworthiness Engineering Group CASA, Fax (02) 6217 1914.</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt"><span>The report must include the following information:</span></p><p style="margin-top:12pt; margin-left:42.55pt; text-indent:-21.3pt"><span>(a)</span><span style="width:7.98pt; text-indent:0pt; display:inline-block"> </span><span>The aeroplane registration and auxiliary tank STC number installed.</span></p></td></tr></tbody></table>

	(b) The usage frequency in terms of total number of flights per year and total number of flights per year for which the auxiliary tank is used.2. Deactivate the auxiliary fuel tanks, in accordance with a deactivation procedure approved by CASA. 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 must not result in the need for additional instructions for continued airworthiness.Note 1: Appendix A of this AD provides criteria that should be included in the deactivation procedure. The proposed deactivation procedures should be submitted to the Manager, Systems and New Technologies, as soon as possible to ensure timely review and approval.Note 2: FAA AD 2008-22-01 Amdt 39-15696 dated 9 October 2008 refers.
Compliance:	For Requirement 1 - Within 45 days after the effective date of this AD.For Requirement 2 - Before 16 December 2009.
	This Airworthiness Directive becomes effective on 15 January 2009.
Background:	This AD requires deactivation of PATS Aircraft, LLC, auxiliary fuel tanks. This AD results from fuel system reviews conducted by the manufacturer, which identified unsafe conditions for which the manufacturer has not provided corrective actions. The issuing of this AD is intended 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.

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