Electrical EquipmentElectrical Equipment

Electrical Equipment

<table cellspacing="0" cellpadding="0" style="width:510.3pt; 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 colspan="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>This AD applies to </span><span>Lermer</span><span> GmbH (previously </span><span>Lermer</span><span>) water boilers with any of the following:</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="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:21.3pt; text-indent:-21.3pt"><span>(a)</span><span style="width:7.98pt; text-indent:0pt; display:inline-block"> </span><span>Part Number L13471, L13471-05, L13471-11 or L13471-19;</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="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:21.3pt; text-indent:-21.3pt"><span>(b)</span><span style="width:7.31pt; text-indent:0pt; display:inline-block"> </span><span>Type Number 1010099-6, 1010099-10, 1010099-6.1 or 1010099-6.2.</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="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>However, this AD does not apply to water boilers that have been engraved with either:</span></p><p style="margin-left:21.3pt; text-indent:-21.3pt"><span>(a</span><span>)</span><span style="width:7.98pt; text-indent:0pt; display:inline-block"> </span><span>one of the following Airbus Service Bulletin (</span><span style="font-weight:bold; font-style:italic">SB</span><span>) numbers: A300-25A0474, A310-25A2146, A300-25A6170, A320-25A1299, A330-25A3174,</span><br><span>A340-25A4192; or</span></p><p style="margin-left:21.3pt; text-indent:-21.3pt"><span>(b)</span><span style="width:7.31pt; text-indent:0pt; display:inline-block"> </span><span>the</span><span> words ‘Complies with AD F-2004-132’.</span></p></td></tr><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p class="Note"><span></span></p></td><td colspan="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p class="Note"><span>Note 1:</span><span> </span><span>These water boilers are known to be installed on, but not limited to, Airbus</span><span> </span><span>A300, A310, A300-600, A318, A319, A320, A321, A330 and A340 series </span><span>aeroplanes</span><span>.</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="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Get access to the water boiler in accordance with the applicable aircraft maintenance manual and identify the water boiler. If a water boiler bears one of the following </span><span>Lermer</span><span> Part Numbers or Type Numbers:</span></p><p style="margin-left:21.3pt; text-indent:-21.3pt"><span>(a)</span><span style="width:7.98pt; text-indent:0pt; display:inline-block"> </span><span>Part Number L13471, L13471-05, L13471-11 or L13471-19;</span></p><p style="margin-left:21.3pt; text-indent:-21.3pt"><span>(b)</span><span style="width:7.31pt; text-indent:0pt; display:inline-block"> </span><span>Type Number 1010099-6, 1010099-10, 1010099-6.1 or 1010099-6.2;</span></p><p style="margin-left:36pt; text-indent:-36pt"><span>carry out the following:</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="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:21.3pt; text-indent:-21.3pt"><span>(a)</span><span style="width:7.98pt; text-indent:0pt; display:inline-block"> </span><span>check</span><span> the logo on the identification plate at the rear side of the water boiler (see fig 1). If the new DRIESSEN logo exists, no further action is required;</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="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:21.3pt; text-indent:-21.3pt"><span>(b)</span><span style="width:7.31pt; text-indent:0pt; display:inline-block"> </span><span>if the old </span><span>Lermer</span><span> logo exists, inspect the overheat protection of the water boiler in accordance with </span><span>Lermer</span><span> GmbH CMM 25-30-31 page block 300;</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="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:36pt; text-indent:-36pt"><span style="width:36pt; text-indent:0pt; display:inline-block"></span><img src="image.001.png" width="436" height="359" alt=""></p><p style="margin-left:36pt; text-indent:-36pt; text-align:center"><span>Fig 1 - </span><span>Lermer</span><span> Water Boiler</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="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:21.3pt; text-indent:-21.3pt"><span>(c)</span><span style="width:7.98pt; text-indent:0pt; display:inline-block"> </span><span>if four or more electrical terminals are connected, engrave adjacent to the equipment label ‘Complies with AD F-2004-132’;</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="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:21.3pt; text-indent:-21.3pt"><span>(d)</span><span style="width:7.31pt; text-indent:0pt; display:inline-block"> </span><span>if</span><span> less than four electrical terminals are connected, scrap the water boiler and install an airworthy one.</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="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>For Airbus </span><span>aeroplanes</span><span>, embodiment of the following applicable SB is considered an acceptable mean of compliance for the requirements of this AD:</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 style="width:150.6pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:36pt; text-indent:-36pt"><span style="width:36pt; text-indent:0pt; display:inline-block"></span><span>A300-25A0474</span><br><span>A310-25A2146</span></p></td><td style="width:95.6pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>A300-25A6170</span><br><span>A320-25A1299</span></p></td><td style="width:146.95pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>A330-25A3174</span><br><span>340-25A4192.</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="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p class="Note"><span>Note 2:</span><span> </span><span>Direction </span><span>Générale</span><span> de </span><span>l’Aviation</span><span> </span><span>Civile</span><span> of France (</span><span style="font-weight:bold">DGAC</span><span>) AD F-2004-132 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="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>The action set out in the Requirement section must be taken before 31</span><span> </span><span>December</span><span> </span><span>2004.</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="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>The effective date of this AD is 5 May 2014.</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="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>DGAC advised that an A330 </span><span>aircraft made an in-flight turn back due to overheat of a galley water boiler.</span></p></td></tr><tr style="height:203.25pt"><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td colspan="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Investigations revealed that some of the </span><span>Lermer</span><span> water boilers listed above have a deficiency in the electrical circuit design. In fact, the overheat protector may be installed in serial with the relay control and in case of relay contact </span><span>sticking,</span><span> the continuous source of power to the heating element cannot be cut. This situation may lead to the emission of a burning smell together with smoke and possible injury to the </span><span>aeroplane’s</span><span> occupants.</span></p><p><span>In response to this situation, CASA issued AD/ELECT/74 dated 5 August 2004 to require the inspection of applicable water boilers. Water boilers with overheat protection having less than 4 electrical terminals are discarded; those with 4 or more electrical terminals are marked as having been inspected and returned to service.</span></p><p style="margin-bottom:0pt"><span>CASA issued AD/ELECT/74 </span><span>Amdt</span><span> </span><span>1 to </span><span>correct a typographical error in the DGAC AD number referenced in Note 2 of this AD. There are no changes to the technical requirements of the AD and the dates for compliance remain unchanged.</span></p></td></tr></tbody></table>