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AD/RAD/89 - Funwerk Avionics GmbH TRT800A and TRT800H Transponders
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AD/RAD/89 - Funwerk Avionics GmbH TRT800A and TRT800H Transponders
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| AD/RAD/89 | Funwerk Avionics GmbH TRT800Aand TRT800H Transponders | 5/2009 |
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<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>Mode-S transponders manufactured by Funkwerk Avionics GmbH (formerly Filser Electronic GmbH), except those marked Mod-Index 10 as follows:</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:35.45pt; text-indent:-21.25pt"><span>-</span><span style="width:17.25pt; text-indent:0pt; display:inline-block"> </span><span>Model TRT800A, all part numbers (P/N), serial numbers (S/N) up to and including 40539908, and</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:35.45pt; text-indent:-21.25pt"><span>-</span><span style="width:17.25pt; text-indent:0pt; display:inline-block"> </span><span>Model TRT800H, all P/N, S/N up to and including 30250007.</span></p></td></tr><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span style="font-style:italic"></span></p></td><td colspan="3" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span style="font-style:italic">Note 1:</span><span style="font-style:italic"> </span><span style="font-style:italic">These transponders are known to be installed on, but not limited to, the following aircraft types:</span></p></td></tr><tr style="height:13.15pt"><td rowspan="2" style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span style="font-style:italic"></span></p></td><td style="width:30.1pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span style="font-style:italic"></span></p></td><td style="width:138.15pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold; font-style:italic">Manufacturer</span></p></td><td style="width:224.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold; font-style:italic">Model</span></p></td></tr><tr style="height:13.1pt"><td style="width:30.1pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span style="font-style:italic"></span></p></td><td style="width:138.15pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span style="font-style:italic">APEX (Robin)</span><br><span style="font-style:italic">Cessna (including Reims Aviation in </span><span style="font-style:italic">France</span><span style="font-style:italic">)</span><br><span style="font-style:italic">Diamond Aircraft Industries</span><br><span style="font-style:italic">Extra</span><br><span style="font-style:italic">Grob</span><br><span style="font-style:italic">Mooney</span><br><span style="font-style:italic">Piper</span><br><span style="font-style:italic">Scheibe</span><br><span style="font-style:italic">True Flight Holdings (Grumman, American)</span></p></td><td style="width:224.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span style="font-style:italic">DR1050, DR250, DR350 and DR400 series</span><br><span style="font-style:italic">150, 172, 182, 210, T303 and 337 series</span><br><br><span style="font-style:italic">DV 20</span><br><span style="font-style:italic">EA-300 series</span><br><span style="font-style:italic">G 109 B powered sailplane and G 115 series</span><br><span style="font-style:italic">M20J</span><br><span style="font-style:italic">PA-28 series</span><br><span style="font-style:italic">SF 25 C Powered Sailplanes</span><br><span style="font-style:italic">AA-5B</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 style="margin-left:21.3pt; text-indent:-21.3pt"><span>1.</span><span style="width:12.3pt; text-indent:0pt; display:inline-block"> </span><span>Replace the affected transponder with a unit that has been modified in accordance with Funkwerk Avionics Service Bulletin (SB) TRT800-A-H-1 Revision 1.04 dated 17 October 2008 or later revision approved by the European Aviation Safety Agency (EASA).</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>2.</span><span style="width:12.3pt; text-indent:0pt; display:inline-block"> </span><span>Transponders, as identified in the Applicability Statement, may not be installed on any aircraft, unless it has been modified in accordance with SB</span><br><span>TRT800-A-H-1 Revision 1.04 or later revision approved by the EASA.</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>EASA AD 2008-0183 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>For Requirement 1 - Before 19 November 2010.</span></p></td></tr></tbody></table>
| For Requirement 2 - After 18 November 2010. | |
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| This Airworthiness Directive becomes effective on 7 May 2009. | |
| Background: | EASA has received reports of intermittent loss of detection on Mode-S Secondary Surveillance Radar (SSR) of aircraft equipped with Funkwerk Avionics TRT800A Transponders. Reports from Air Navigation Service Providers (ANSP), as well as data from flight trials, have shown that the unit fails to perform as expected.Based on the information provided in the reports, EASA has determined that operation of these transponders in airspace where Mode S interrogations are used by the ground systems could create disruptions in the Air Traffic Management process, potentially compromising aircraft safety. |
| Whilst very fewTRT800 transponders are known to be in Australia, CASA has decided to issue this Directive which requires the modification of affected transponders and limits there installation in aircraft after 18 November 2010. |
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James Coyne
Delegate of the Civil Aviation Safety Authority
26 March 2009