Agusta AB139 and AW139 Series HelicopterAgusta AB139 and AW139 Series Helicopters

Agusta AB139 and AW139 Series Helicopters

<table cellspacing="0" cellpadding="0" style="width:510.35pt; margin-top:0pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr><td colspan="2" style="width:93.85pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><h2 id="navPoint_2"><span>AD/AB139/7</span></h2></td><td style="width:322.3pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><h2 id="navPoint_3" style="text-align:center"><span>Tail Boom Assembly</span></h2></td><td style="width:61.2pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><h2 id="navPoint_4"><span>10/2008 DM</span></h2></td><td style="vertical-align:top"></td></tr><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Applicability:</span></p></td><td colspan="4" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>AB139 and AW139 helicopters, all serial numbers, if a tail boom assembly Part Number (P/N) 3G5350A00131, P/N 3G5350A00132, P/N 3G5350A00133 or P/N 3G5350A00134 is installed.</span></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 colspan="4" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-bottom:12pt"><span>Action in accordance with EASA AD 2008-0157.</span></p><p class="Note" style="margin-top:12pt"><span>Note:</span><span> </span><span>Agusta Bollettino Tecnico (BT) 139-134 refers.</span></p></td></tr><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Compliance:</span></p></td><td colspan="4" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-bottom:12pt"><span>Required as indicated in the requirement document.</span></p><p class="Note" style="margin-top:12pt"><span>Note:</span><span> </span><span>Report all defects to CASA (via SDR) and the type certificate holder.</span></p></td></tr><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td colspan="4" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>This Airworthiness Directive becomes effective on 27 August 2008.</span></p></td></tr><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Background:</span></p></td><td colspan="4" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-bottom:12pt"><span>Some operators of AB/AW139 helicopters have reported finding debonding of fuselage tail boom panels.</span><span> </span><span>This condition, if not detected and corrected, could lead to the structural collapse of the tail boom installation, resulting in loss of control of the helicopter.</span></p><p style="margin-top:12pt"><span>This directive requires repetitive inspections of the tail boom assembly and the reporting of defects to CASA and the type certificate holder.</span></p></td></tr><tr style="height:0pt"><td style="width:85.05pt"></td><td style="width:19.6pt"></td><td style="width:333.1pt"></td><td style="width:72pt"></td><td style="width:0.6pt"></td></tr></tbody></table>