Rolls-Royce (Allison) Turbine Engines - 250 Series

<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 style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>All Rolls-Royce Allison 250 series engines.</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 style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:22.65pt; text-indent:-22.65pt"><span>1.</span><span style="width:13.65pt; text-indent:0pt; display:inline-block"> </span><span>Review engine logbooks and determine if a compressor module with a serial number listed in Table 1 and 2 is installed in the engine.</span></p><p style="margin-left:22.65pt; text-indent:-22.65pt"><span>2.</span><span style="width:13.65pt; text-indent:0pt; display:inline-block"> </span><span>Remove affected Rolls-Royce Allison C20B series and C20R series compressor modules with a serial number listed in Table 1 from service.</span></p><p style="margin-left:22.65pt; text-indent:-22.65pt"><span>3.</span><span style="width:13.65pt; text-indent:0pt; display:inline-block"> </span><span>Remove affected Rolls-Royce Allison C18 series, C28 series, C30 series and C47 series compressor modules with a serial number listed in Table 2 from service.</span></p><p style="margin-left:22.65pt; text-indent:-22.65pt"><span>4.</span><span style="width:13.65pt; text-indent:0pt; display:inline-block"> </span><span>All affected Rolls-Royce Allison C20B series and C20R series compressor modules must be sent to an approved maintenance organisation to be assessed in accordance with Original Equipment Manufacturer (OEM) specifications.</span></p><p style="margin-left:22.65pt"><span>Compressor rotor wheels in the position numbers listed in Table 1 for a module with a serial number listed in Table 1 must be replaced before returning the compressor module to service, the subject removed rotor wheels must be quarantined or scrapped so they cannot be installed as a serviceable part.</span></p><p style="margin-left:22.65pt; text-indent:-22.65pt"><span>5.</span><span style="width:13.65pt; text-indent:0pt; display:inline-block"> </span><span>All affected Rolls-Royce Allison C18 series, C28 series, C30 series and C47 series compressor modules must be sent to an approved maintenance organisation to be assessed in accordance with OEM specifications</span><span>.</span></p><p style="margin-left:22.65pt; text-indent:-1.4pt"><span>Compressor impellers must be </span><span>replaced, or</span><span> may only be returned to service through an approved OEM repair scheme </span><span>before returning the compressor module to service. Impellers deemed as not recoverable </span><span>must </span><span>be quarantined or </span><span>scrapped so they cannot be installed as a serviceable part.</span></p><p style="text-align:center"><span>Table 1: Affected C20B and C20R compressor modules.</span></p><table cellspacing="0" cellpadding="0" style="margin-top:0pt; margin-bottom:0pt; border:0.75pt solid #000000; border-collapse:collapse"><tbody><tr><td colspan="4" style="width:403pt; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">Affected Compressor Module Serial Numbers (S/N):</span></p></td></tr><tr><td colspan="2" style="width:216.05pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">C20B series</span></p></td><td colspan="2" style="width:176.15pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">C20R series</span></p></td></tr><tr><td style="width:81.4pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span style="font-weight:bold">Module S/N:</span></p></td><td style="width:123.85pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span style="font-weight:bold">Compressor Rotor Wheel Position Number:</span></p></td><td style="width:72.7pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span style="font-weight:bold">Module S/N:</span></p></td><td style="width:92.65pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span style="font-weight:bold">Compressor Rotor Wheel Position Number:</span></p></td></tr><tr style="height:23.35pt"><td style="width:81.4pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC23900</span></p></td><td style="width:123.85pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1, 2, 3 &amp; 4</span></p></td><td style="width:72.7pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC15280</span></p></td><td style="width:92.65pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1</span></p></td></tr></tbody></table><p style="margin-top:12pt; text-align:center"><span>Table 1 (Continued)</span></p><table cellspacing="0" cellpadding="0" style="margin-top:0pt; margin-bottom:0pt; border:0.75pt solid #000000; border-collapse:collapse"><tbody><tr><td style="width:81.4pt; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span style="font-weight:bold">Module S/N:</span></p></td><td style="width:123.85pt; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span style="font-weight:bold">Compressor Rotor Wheel Position Number:</span></p></td><td style="width:74.25pt; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span style="font-weight:bold">Module S/N:</span></p></td><td style="width:91.1pt; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span style="font-weight:bold">Compressor Rotor Wheel Position Number:</span></p></td></tr><tr style="height:349.85pt"><td style="width:81.4pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC30243</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC30972</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC31261F</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC31394</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC32128</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC33247</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC33931</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC34205</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC35463</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC36132</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC37795</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC37814</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC37978</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC38521</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC39053</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC40090</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC40093</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC40446</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC40483</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC40560</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC41262</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC41846</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC41917</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC42465</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC43498</span></p></td><td style="width:123.85pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">To be advised (TBA).</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">2, 3 &amp; 4</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1 &amp; 6</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1 &amp; 2</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">TBA.</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">4</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">2, 3, 4, &amp; 6</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1, 2, 3, 4 &amp; 5</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">TBA.</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">TBA.</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">TBA.</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">TBA.</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1 &amp; 5</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">TBA.</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1 &amp; 4</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1 &amp; 5</span></p></td><td style="width:74.25pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC15850</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC15973</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC28209</span></p></td><td style="width:91.1pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1 &amp; 4</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">1 &amp; 4</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">3 &amp; 4</span></p></td></tr></tbody></table><p style="text-align:center"><span>Table 2: Affected C18, C28, C30 and C47 compressor modules.</span></p><table cellspacing="0" cellpadding="0" style="margin-top:0pt; margin-bottom:0pt; border:0.75pt solid #000000; border-collapse:collapse"><tbody><tr><td colspan="4" style="width:403pt; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">Affected Compressor Module Serial Numbers (S/N):</span></p></td></tr><tr><td style="width:92.65pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">C18 series</span></p></td><td style="width:92.65pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">C28 series</span></p></td><td style="width:92.65pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">C30 series</span></p></td><td style="width:92.65pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">C47 series</span></p></td></tr><tr style="height:142pt"><td style="width:92.65pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif; font-weight:bold">CAC21705B</span></p></td><td style="width:92.65pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC28017</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC28022</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC28048</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC28119</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC70026</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC70243</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC70779</span></p></td><td style="width:92.65pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC28046</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC90011</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC90052</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC90069</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC90507</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC90719</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC91119</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC91305</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC91311</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC91507</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt"><span style="font-family:'Times New Roman', serif"></span></p></td><td style="width:92.65pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC44094</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC44293</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC44294</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC45072</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC45750</span></p></td></tr></tbody></table><p style="margin-top:12pt; text-align:center"><span>Table 2 (Continued)</span></p><table cellspacing="0" cellpadding="0" style="margin-top:0pt; margin-bottom:0pt; border:0.75pt solid #000000; border-collapse:collapse"><tbody><tr><td style="width:92.65pt; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span style="font-weight:bold">C18 series</span></p></td><td style="width:92.65pt; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span style="font-weight:bold">C28 series</span></p></td><td style="width:92.65pt; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span style="font-weight:bold">C30 series</span></p></td><td style="width:92.65pt; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span style="font-weight:bold">C47 series</span></p></td></tr><tr style="height:94.4pt"><td style="width:92.65pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span style="font-weight:bold"></span></p></td><td style="width:92.65pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif"></span></p></td><td style="width:92.65pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC91607</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC91623</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC91635</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC91820</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC98516</span></p><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif">CAC98537</span></p></td><td style="width:92.65pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p class="Bodytext" style="margin-left:0pt; margin-bottom:0pt; text-indent:0pt; font-size:12pt"><span style="font-family:'Times New Roman', serif; font-weight:bold"></span></p></td></tr></tbody></table><p class="Note"></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 style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:21.6pt; text-indent:-21.6pt"><span>1.</span><span style="width:12.6pt; text-indent:0pt; display:inline-block"> </span><span>Before further flight</span><span>.</span></p><p style="margin-left:21.6pt; text-indent:-21.6pt"><span>2.</span><span style="width:12.6pt; text-indent:0pt; display:inline-block"> </span><span>For C20B and C20R series </span><span>compressor modules: Before further flight.</span></p><p style="margin-left:21.6pt; text-indent:-21.6pt"><span>3.</span><span style="width:12.6pt; text-indent:0pt; display:inline-block"> </span><span>For </span><span>C18, </span><span>C28, C30 and C47 series </span><span>compressor modules: the earlier of the following:</span></p><p style="margin-left:43.2pt; text-indent:-21.6pt"><span>(</span><span>i</span><span>) </span><span style="width:7.27pt; text-indent:0pt; display:inline-block"></span><span>within 50 hours’ time in service;</span></p><p style="margin-left:43.2pt; text-indent:-21.6pt"><span>(ii) </span><span style="width:3.94pt; text-indent:0pt; display:inline-block"></span><span>12 April 2020;</span></p><p style="margin-left:43.2pt; text-indent:-21.6pt"><span>(iii)</span><span style="width:3.61pt; text-indent:0pt; display:inline-block"> </span><span>next engine shop visit.</span></p><p style="margin-left:43.2pt; text-indent:-21.6pt"><span>(iv)</span><span style="width:4.27pt; text-indent:0pt; display:inline-block"> </span><span>for C47 compressor module Serial </span><span>Number</span><span> CAC44094, within 50 hours’ time in service or 4 June 2020.</span></p><p style="margin-left:21.6pt; text-indent:-21.6pt"><span>4.</span><span style="width:12.6pt; text-indent:0pt; display:inline-block"> </span><span>Before returning to service.</span></p><p style="margin-left:21.6pt; text-indent:-21.6pt"><span>5.</span><span style="width:12.6pt; text-indent:0pt; display:inline-block"> </span><span>Before returning to service.</span></p><p style="margin-left:0.3pt; text-indent:-0.3pt"><span style="width:0.3pt; text-indent:0pt; display:inline-block"></span><span>For aircraft located away from a maintenance facility, a special flight permit may be issued for one non-revenue ferry flight to return the aircraft to the nearest maintenance facility to carry out the requirements of this AD.</span></p><p style="margin-left:0.3pt; text-indent:-0.3pt"><span style="width:0.3pt; text-indent:0pt; display:inline-block"></span><span>CASA </span><span>is to be notified </span><span>of any engines found to have an affected module fitted</span><span> via the Defect Reporting Service.</span></p><p style="margin-left:0.3pt; text-indent:-0.3pt"><span style="font-style:italic">Note</span><span style="font-style:italic"> 1: </span><span style="font-style:italic">Civil Aviation Authority of New Zealand (CAA NZ) Airworthiness Directive DCA/AL250/60A has been referenced as a source document for Table</span><span style="font-style:italic">s</span><span style="font-style:italic"> 1</span><span style="font-style:italic"> and 2</span><span style="font-style:italic">.</span></p><p style="margin-left:0.3pt; text-indent:-0.3pt"><span style="font-style:italic">Note 2: </span><span style="font-style:italic">The primary safety concern with C18, C28, C30 and C47 series compressor modules relates to unauthorised drilling of compressor impellers for balancing.</span></p><p><span style="font-style:italic">Note 3: </span><span style="font-style:italic">The primary safety concern with C20B and C20R series compressor modules relates to blending repairs on compressor rotor wheels with the lack of shot peening.</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:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Th</span><span>is</span><span> </span><span>AD </span><span>commences on</span><span> 8 May 2020.</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 style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>A recent audit of a New Zealand maintenance organisation by CAA NZ has determined that compressor module inspections and repairs of these modules may not have been carried out in accordance with approved Rolls-Royce procedures.</span></p></td></tr></tbody></table>

A drawing of a face Description automatically generated

Pieter van Dijk
Delegate of the Civil Aviation Safety Authority

4 May 2020