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AD/CFE 738/1 - High Pressure Rotor Components
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AD/CFE 738/1 - High Pressure Rotor Components
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| AD/CFE 738/1 | High Pressure Rotor Components | 3/2006 |
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<table cellspacing="0" cellpadding="0" style="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:413.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-bottom:12pt"><span>CFE Company Model CFE738-1-1B turbofan engines.</span></p><p style="margin-top:12pt"><span style="font-style:italic">Note 1:</span><span style="font-style:italic"> </span><span style="font-style:italic">These engines installed on but not limited to the Dassault Aviation Falcon 2000 series aeroplanes.</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:413.9pt; 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>Remove from service certain stage 4 and 5 blisks and impeller aft shafts prior to exceeding the new cyclic life limits as follows, and replace with serviceable parts:</span></p><table cellspacing="0" cellpadding="0" style="width:94.94%; margin-top:0pt; margin-left:20.9pt; margin-bottom:0pt; border:0.75pt solid #000000; border-collapse:collapse"><tbody><tr><td style="width:28.92%; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">Nomenclature</span></p></td><td style="width:29.98%; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">Part Number (P/N)</span></p></td><td style="width:39.58%; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span style="font-weight:bold">Cyclic Life Limit</span></p></td></tr><tr><td style="width:28.92%; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span>Stage 4 and 5 Blisk</span></p></td><td style="width:29.98%; border:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span>6079T74P08</span></p></td><td style="width:39.58%; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span>6,700 cycles since new (CSN)</span></p></td></tr><tr><td style="width:28.92%; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span>Impeller Aft Shaft</span></p></td><td style="width:29.98%; border:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span>6079T80P04</span></p></td><td style="width:39.58%; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span>5,100 CSN</span></p></td></tr><tr><td style="width:28.92%; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><img src="image.001.png" width="1" height="1" alt=""></p></td><td style="width:29.98%; border:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span>6079T80P05</span></p></td><td style="width:39.58%; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span>2,160 CSN</span></p></td></tr><tr><td style="width:28.92%; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><img src="image.001.png" width="1" height="1" alt=""></p></td><td style="width:29.98%; border:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span>6079T80P06</span></p></td><td style="width:39.58%; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span>7,100 CSN</span></p></td></tr><tr><td style="width:28.92%; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><img src="image.001.png" width="1" height="1" alt=""></p></td><td style="width:29.98%; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span>6079T80P07</span></p></td><td style="width:39.58%; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; padding:0.38pt; vertical-align:top"><p style="text-align:center"><span>7,100 CSN</span></p></td></tr></tbody></table><p class="Note"><br><span>Note 2:</span><span> </span><span>FAA AD 2000-23-12 Amdt 39-11982 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 style="width:413.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>At the limits detailed in Requirement 1 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:413.9pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>This Airworthiness Directive becomes effective on 16 March 2006.</span></p></td></tr></tbody></table>
| Background: | This AD sets new life limits for certain HPC rotor components in all engines. This amendment is prompted by a reduction in the calculated service life of certain compressor rotor rotating parts to values below currently approved service lives. The actions specified by this AD are intended to prevent failure of certain HPC rotor components, which could result in an uncontained engine failure and damage to the aeroplane. |
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James Coyne
Delegate of the Civil Aviation Safety Authority
1 February 2006