Radio Communication (including Emergency Transmitters and Navigation Equipment)

<table cellspacing="0" cellpadding="0" style="width:510.3pt; margin-top:0pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr><td style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Applicability:</span></p></td><td colspan="5" style="width:395pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Rockwell Collins Mode S Transponders identified by type and Part Number (P/N) in Table 1 when installed in an aeroplane equipped with Honeywell AZ800 or AZ810 (all part numbers) air data computers (ADC) where the data bus interface between the Honeywell ADC and the Rockwell Collins transponder is providing the Selected Altitude data input to the transponder.</span></p></td></tr><tr><td style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td colspan="5" style="width:395pt; border-bottom:0.75pt solid #000000; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">Table 1 - Transponders identified by Type and P/N</span></p></td></tr><tr style="height:8.75pt"><td rowspan="3" style="width:93.9pt; border-right:0.75pt solid #000000; padding-right:4.97pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td colspan="2" style="width:95.6pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">Type</span></p></td><td colspan="3" style="width:288.7pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">P/N (all serial numbers)</span></p></td></tr><tr style="height:8.75pt"><td colspan="2" style="width:95.6pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span>TDR-94</span></p></td><td colspan="3" style="width:288.7pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p><span>622-9352-007, 622-9352-008 and 622-9352-108</span></p></td></tr><tr style="height:8.75pt"><td colspan="2" style="width:95.6pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span>TDR-94D</span></p></td><td colspan="3" style="width:288.7pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p><span>622-9210-007, 622-9210-008 and 622-9210-108</span></p></td></tr><tr><td style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p class="Note"><span></span></p></td><td colspan="5" style="width:395pt; border-top:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p class="Note"><span>Note 1:</span><span> </span><span>These transponder/ADC combinations are known to be installed on, but not limited to, the following aeroplanes:</span></p></td></tr><tr style="height:13.15pt"><td rowspan="2" style="width:93.9pt; border-right:0.75pt solid #000000; padding-right:4.97pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td colspan="3" style="width:159.4pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p class="Note" style="text-align:center"><span style="font-weight:bold">Manufacturer</span></p></td><td colspan="2" style="width:224.9pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p class="Note" style="text-align:center"><span style="font-weight:bold">Model</span></p></td></tr><tr style="height:13.1pt"><td colspan="3" style="width:159.4pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p class="Note"><span>Avions</span><span> de Transport </span><span>Régional</span><span> (ATR)</span></p></td><td colspan="2" style="width:224.9pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p class="Note"><span>ATR 42 and ATR 72</span><span> series</span></p></td></tr><tr style="height:13.1pt"><td style="width:93.9pt; border-right:0.75pt solid #000000; padding-right:4.97pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td colspan="3" style="width:159.4pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p class="Note"><span>Bombardier (formerly Canadair)</span></p></td><td colspan="2" style="width:224.9pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p class="Note"><span>CL-600-2A12 (601 Variant), CL-600-2B16 (601-3A</span><span> and </span><span>601-3R Variants)</span></p></td></tr><tr style="height:13.1pt"><td style="width:93.9pt; border-right:0.75pt solid #000000; padding-right:4.97pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td colspan="3" style="width:159.4pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p class="Note"><span>d</span><span>e Havilland Canada</span><span> (DHC)</span></p></td><td colspan="2" style="width:224.9pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p class="Note"><span>DHC-8, </span><span>Series 100, 200 and 300, </span><span>all models</span></p></td></tr><tr style="height:13.1pt"><td style="width:93.9pt; border-right:0.75pt solid #000000; padding-right:4.97pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td colspan="3" style="width:159.4pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p class="Note"><span>Dassault</span><span> Aviation</span></p></td><td colspan="2" style="width:224.9pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p class="Note"><span>Mystère</span><span>-Falcon 900</span><span> series</span></p></td></tr><tr style="height:13.1pt"><td style="width:93.9pt; border-right:0.75pt solid #000000; padding-right:4.97pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td colspan="3" style="width:159.4pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p class="Note"><span>Gulfstream</span></p></td><td colspan="2" style="width:224.9pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p class="Note"><span>G-IV</span></p></td></tr><tr><td style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Requirement:</span></p></td><td colspan="5" style="width:395pt; border-top:0.75pt solid #000000; 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>Either:</span></p></td></tr><tr><td style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td colspan="5" style="width:395pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:42.55pt; text-indent:-21.25pt"><span>a.</span><span style="width:12.92pt; text-indent:0pt; display:inline-block"> </span><span>Modify the transponder </span><span>in accordance with the applicable Rockwell Collins Service Bulletin (SB) listed </span><span>in Table </span><span>2</span><span> and Table </span><span>3</span><span>.</span></p></td></tr><tr><td style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td colspan="5" style="width:395pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:21.3pt"><span>or</span></p></td></tr><tr><td style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td colspan="5" style="width:395pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:42.55pt; text-indent:-21.25pt"><span>b.</span><span style="width:12.25pt; text-indent:0pt; display:inline-block"> </span><span>Replace the transponder, with a TDR-94 unit identified by P/N</span><br><span>622-9352-309 or -409, or a TDR-94D unit identified by P/N</span><br><span>622-</span><span>9210-309 or -409, as </span><span>applicable in accordance with an approved aeroplane modification.</span></p></td></tr><tr><td style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td colspan="5" style="width:395pt; border-bottom:0.75pt solid #000000; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-top:12pt; text-align:center"><span style="font-weight:bold">Table </span><span style="font-weight:bold">2</span><span style="font-weight:bold"> </span><span style="font-weight:bold">-</span><span style="font-weight:bold"> TDR-94 Transponders</span></p></td></tr><tr style="height:3.75pt"><td rowspan="6" style="width:93.9pt; border-right:0.75pt solid #000000; padding-right:4.97pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td style="width:74.35pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">Current P/N</span></p></td><td colspan="3" style="width:95.6pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">New P/N(options)</span></p></td><td style="width:203.65pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">Rockwell Collins Service Bulletin (SB) instructions to be used for modification</span></p></td></tr><tr style="height:3.75pt"><td rowspan="2" style="width:74.35pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:middle"><p style="text-align:center"><span>622-9352-007</span></p></td><td colspan="3" style="width:95.6pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span>622-9352-309</span></p></td><td style="width:203.65pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="margin-left:8.6pt"><span>TDR-94/94D-34-506</span><span>506</span><span> as in force from time to time.</span></p></td></tr><tr style="height:3.75pt"><td colspan="3" style="width:95.6pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span>622-9352-409</span></p></td><td style="width:203.65pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="margin-left:8.6pt"><span>TDR-94/94D-34-507</span><span>506</span><span> as in force from time to time.</span></p></td></tr><tr style="height:3.75pt"><td rowspan="2" style="width:74.35pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:middle"><p style="text-align:center"><span>622-9352-008</span></p></td><td colspan="3" style="width:95.6pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span>622-9352-309</span></p></td><td style="width:203.65pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="margin-left:8.6pt"><span>TDR-94/94D-34-505</span><span>506</span><span> as in force from time to time.</span></p></td></tr><tr style="height:3.75pt"><td colspan="3" style="width:95.6pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span>622-9352-409</span></p></td><td style="width:203.65pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="margin-left:8.6pt"><span>TDR-94/94D-34-507</span><span>506</span><span> as in force from time to time.</span></p></td></tr><tr style="height:3.75pt"><td style="width:74.35pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span>622-9352-108</span></p></td><td colspan="3" style="width:95.6pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span>622-9352-409</span></p></td><td style="width:203.65pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="margin-left:8.6pt"><span>TDR-94/94D-34-505</span><span>506</span><span> as in force from time to time.</span></p></td></tr><tr><td style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td colspan="5" style="width:395pt; border-top:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-top:12pt; text-align:center"><span style="font-weight:bold">Table 3 </span><span style="font-weight:bold">-</span><span style="font-weight:bold"> TDR-94D Transponders</span></p></td></tr><tr style="height:4.5pt"><td rowspan="6" style="width:93.9pt; border-right:0.75pt solid #000000; padding-right:4.97pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td style="width:74.35pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">Current P/N</span></p></td><td colspan="3" style="width:95.6pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">New P/N (options)</span></p></td><td style="width:203.65pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">Rockwell Collins SB instructions to be used for modification</span></p></td></tr><tr style="height:4.35pt"><td rowspan="2" style="width:74.35pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:middle"><p style="text-align:center"><span>622-9210-007</span></p></td><td colspan="3" style="width:95.6pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span>622-9210-309</span></p></td><td style="width:203.65pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="margin-left:8.6pt"><span>TDR-94/94D-34-506</span><span>506</span><span> as in force from time to time.</span></p></td></tr><tr style="height:4.35pt"><td colspan="3" style="width:95.6pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span>622-9210-409</span></p></td><td style="width:203.65pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="margin-left:8.6pt"><span>TDR-94/94D-34-507</span><span>506</span><span> as in force from time to time.</span></p></td></tr><tr style="height:4.35pt"><td rowspan="2" style="width:74.35pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:middle"><p style="text-align:center"><span>622-9210-008</span></p></td><td colspan="3" style="width:95.6pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span>622-9210-309</span></p></td><td style="width:203.65pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="margin-left:8.6pt"><span>TDR-94/94D-34-505</span><span>506</span><span> as in force from time to time.</span></p></td></tr><tr style="height:4.35pt"><td colspan="3" style="width:95.6pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span>622-9210-409</span></p></td><td style="width:203.65pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="margin-left:8.6pt"><span>TDR-94/94D-34-507</span><span>506</span><span> as in force from time to time.</span></p></td></tr><tr style="height:4.35pt"><td style="width:74.35pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span>622-9210-108</span></p></td><td colspan="3" style="width:95.6pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="text-align:center"><span>622-9210-409</span></p></td><td style="width:203.65pt; border:0.75pt solid #000000; padding-right:4.97pt; padding-left:4.97pt; vertical-align:top"><p style="margin-left:8.6pt"><span>TDR-94/94D-34-505</span><span>506</span><span> as in force from time to time.</span></p></td></tr><tr style="height:0pt"><td style="width:104.6pt"></td><td style="width:85.05pt"></td><td style="width:21.25pt"></td><td style="width:63.8pt"></td><td style="width:21.25pt"></td><td style="width:214.35pt"></td></tr></tbody></table>

<table cellspacing="0" cellpadding="0" style="width:510.3pt; margin-top:0pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr style="height:4.35pt"><td colspan="2" style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td style="width:395pt; border-top:0.75pt solid #000000; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:8.6pt"><span style="font-style:italic">Note 2:</span><span style="font-style:italic"> </span><span style="font-style:italic">The words “as in force from time to time” require compliance with the</span><span style="font-style:italic"> </span><span style="font-style:italic">most recent version of the referenced document.</span></p></td></tr><tr style="height:85.15pt"><td colspan="2" style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td style="width:395pt; 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>Disable the Automatic Dependent Surveillance - Broadcast (ADS-B) function on </span><span>TDR</span><span>-</span><span>94 transponders with P/N 622-9352-409 and</span><span> </span><span>TDR</span><span>-</span><span>94D transponders with P/N 622-9210-</span><span>409 </span><span>unless compliance with European Aviation Safety Agency </span><span style="font-weight:bold">(</span><span style="font-weight:bold; font-style:italic">EASA</span><span style="font-weight:bold">)</span><span> A</span><span>cceptable </span><span>M</span><span>eans of </span><span>C</span><span>ompliance (AMC)</span><span> 20-24 </span><span>as in force from time to time</span><span> </span><span>or </span><span>EASA </span><span>Certification Specifications and Acceptable</span><span> </span><span>Means of Compliance for Airborne</span><span> </span><span>Communications, Navigation and</span><span> </span><span>Surveillance</span><span> (</span><span>CS-ACNS</span><span>)</span><span> </span><span>as in force from time to time </span><span>or </span><span>United States of America </span><span>F</span><span>ederal </span><span>A</span><span>viation </span><span>A</span><span>dministration </span><span style="font-weight:bold">(</span><span style="font-weight:bold; font-style:italic">FAA</span><span style="font-weight:bold">)</span><span> </span><span>Code of Federal Regulations (CFR) </span><span>14CFR91.225 and 91.227 </span><span>as in force from time to time</span><span> </span><span>has been demonstrated.</span></p></td></tr><tr><td colspan="2" style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td style="width:395pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:21.3pt; text-indent:-21.3pt"><span>3.</span><span style="width:12.3pt; text-indent:0pt; display:inline-block"> </span><span>T</span><span>ransponder</span><span>s</span><span>, identified by </span><span>the </span><span>Applicability Statement may not be </span><span>installed in an aeroplane equipped with Honeywell AZ800 or AZ810 (all part numbers) ADC where the data bus interface between the Honeywell ADC and the transponder is providing the Selected Altitude data input to the transponder</span><span> unless modified in accordance with Requirement 1.a.</span></p></td></tr><tr><td colspan="2" style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p class="Note"><span></span></p></td><td style="width:395pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p class="Note"><span>Note </span><span>3</span><span>:</span><span> </span><span>This Directive is not applicable to </span><span>Avions</span><span> de Transport </span><span>Régional</span><span> </span><span>ATR-42 and ATR-72 aeroplanes on which the affected transponder and ADC</span><span> </span><span>installation has been done in accordance with an ATR design definition,</span><span> </span><span>although equipped with transponders and Honeywell AZ800 or AZ810 ADC as</span><span> </span><span>listed in the Applicability section of this D</span><span>irective</span><span>, since on these aeroplanes’ original architecture, the</span><span> </span><span>Selected Altitude is not provided by the ADC.</span></p></td></tr><tr><td colspan="2" style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p class="Note"><span></span></p></td><td style="width:395pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p class="Note"><span>Note </span><span>4</span><span>:</span><span> </span><span>This Directive is not applicable to </span><span>d</span><span>e Havilland Canada</span><span> </span><span>DHC-8 Series 100, 200 and 300 aeroplanes, all models, on which the</span><span> </span><span>affected transponder and ADC installation has been done in accordance</span><span> </span><span>with the applicable </span><span>d</span><span>e Havilland Canada</span><span> Type Design definition, although</span><span> </span><span>equipped with affected transponders and Honeywell AZ800 or AZ810</span><span> </span><span>ADC as listed in the Applicability section of this D</span><span>irective</span><span>, are exempt from</span><span> </span><span>having to meet the requirements of this D</span><span>irective</span><span>, since on these aeroplanes’</span><span> </span><span>original architecture, the Selected Altitude is not provided by the ADC</span><span>.</span><span> </span><span>This exemption does not apply to aeroplanes that have been modified to</span><span> </span><span>enable a digital link between the air data computer and the transponder.</span></p></td></tr><tr><td colspan="2" style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td style="width:395pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p class="Note"><span>Note </span><span>5</span><span>:</span><span> </span><span>EASA AD 2009-0173R1 </span><span>is the basis for this AD</span><span>.</span></p></td></tr><tr><td colspan="2" style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Compliance:</span></p></td><td style="width:395pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>For Requirement 1 </span><span>-</span><span> </span><span>Within 60 days after the commencement date of this AD, unless previously accomplished</span><span> in accordance with a previous issue of this AD</span><span>.</span></p></td></tr><tr><td colspan="2" style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td style="width:395pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>For Requirement 2 - </span><span>Concurrent with </span><span>the </span><span>accomplishment of the </span><span>Requirement 1 </span><span>modification of the aeroplane</span><span>.</span></p></td></tr><tr><td colspan="2" style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td style="width:395pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>For Requirement 3 - After </span><span>the </span><span>commencement </span><span>date </span><span>of this </span><span>AD</span><span>.</span></p></td></tr><tr><td colspan="2" style="width:93.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Commencement:</span></p></td><td style="width:395pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>This A</span><span>D commences</span><span> on </span><span>10</span><span> September 2021</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>Background:</span></p></td><td colspan="2" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>The original issue of this Directive advised of a mismatch between the ARINC (formerly Aeronautical Radio Inc.) and General Aviation Manufacturers Association </span><span>(GAMA) specifications for the Selected </span><span>Altitude in Motion Bit of label 102 in certain Rockwell Collins TDR-94 transponders is causing incorrect transmission of the Mode-S Selected Altitude parameter.</span></p><p><span>This condition, if not corrected, could lead to invalid Selected Altitude data being transmitted to Mode S ground stations, creating disruptions in the Air Traffic Management process and potentially compromising aeroplane safety.</span></p><p><span>For the reasons described above, th</span><span>e original issue of th</span><span>is </span><span>Directive required</span><span> the modification or replacement of the affected transponders and prohibit</span><span>ed</span><span> reinstallation of unmodified units.</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="2" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Amendment </span><span>1 of this AD </span><span>continue</span><span>d</span><span> those requirements and at the same time supplie</span><span>d</span><span> relief from those requirements for operators of some DHC-8 aircraft.</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="2" style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Amendment 2 of this AD </span><span>removes obsolete references and makes minor editorial changes to reflect current requirements</span><span>.</span></p></td></tr><tr style="height:0pt"><td style="width:85.05pt"></td><td style="width:19.55pt"></td><td style="width:405.7pt"></td></tr></tbody></table>

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David Punshon
Delegate of the Civil Aviation Safety Authority

27 August 2021