This AD does not apply to HP turbine discs, which are pre modification Service Bulletin (SB) 72-7730, post modification SB72-C109 or post modificationSB72-C762.
Requirement:
Carry out an eddy current inspection of the HP turbine disc in accordance with Section 3- Accomplishment instructions of Rolls Royce NMSB 72-AE718 original issue or later EASA approved revision.If a HP turbine disc has previously passed the inspection to Rolls-Royce NMSB 72-C816 or the focussed inspection carried out in accordance with Rolls-Royce TS594-J Overhaul Process Manual Task 70-00-00-200-223 at greater than 700 cycles since new, then either of these inspections meets the requirements of this AD.Note: UK CAA AD G-2006-0002 EASA approval No. 2006-0034 dated 25 January 2006 refers.
Compliance:
1. For all RB211-524 engine marks except RB211-524D4 variants with HP discs listed in Table 2 of this AD:(a) If the HP turbine disc cycles were greater than 6150 cycles since new on24 November 2005, inspect the HP turbine disc within 500 cycles from24 November.(b) If the HP turbine disc cycles were less than 6150 cycles since new on24 November 2005, inspect the disc by whichever is the soonest of the conditions below:(i) Prior to reaching 6650 cycles since new. The HP turbine disc life at inspection must be greater than 700 cycles since new.(ii) At next shop visit where the HP turbine rotor is removed from the Combustor Outer Case and the HP turbine disc life is greater than 700 cycles since new. If a HP turbine disc that meets these cyclic life criteria is currently at shop visit, and if, at the effective date of this Airworthiness Directive, it has not yet been reinstalled into the Combustion Outer Case, then the HP turbine disc must be inspected in accordance with the requirements of this Airworthiness Directive at the current shop visit.2. For all RB211-524D4 engine mark variants with HP discs listed in Table 2 of this AD:(a) If the HP turbine disc cycles were greater than 5000 cycles since new on24 November 2005, inspect the HP turbine disc within 500 cycles from24 November 2005.
<table cellspacing="0" cellpadding="0" style="width:510.3pt; margin-top:0pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr style="height:626.8pt"><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 style="margin-left:42.55pt; margin-bottom:12pt; text-indent:-21.25pt"><span>(b)</span><span style="width:7.26pt; text-indent:0pt; display:inline-block"> </span><span>If the HP turbine disc cycles were less than 5000 cycles since new on</span><br><span>24 November 2005, inspect the HP turbine disc by whichever is the soonest of the conditions below:</span></p><p style="margin-top:12pt; margin-left:63.8pt; margin-bottom:12pt; text-indent:-21.25pt"><span>(i)</span><span style="width:9.92pt; text-indent:0pt; display:inline-block"> </span><span>Prior to reaching 5500 cycles since new. The HP turbine disc life at inspection must be greater than 700 cycles since new.</span></p><p style="margin-top:12pt; margin-left:63.8pt; margin-bottom:12pt; text-indent:-21.25pt"><span>(ii)</span><span style="width:6.59pt; text-indent:0pt; display:inline-block"> </span><span>At the next shop visit where the HP turbine rotor is removed from the Combustor Outer Case and the HP turbine disc life is greater than 700 cycles since new.</span><span> </span><span>If a HP turbine disc that meets these cyclic life criteria is currently at shop visit, and if, at the effective date of this Airworthiness Directive, it has not yet been reinstalled into the Combustion Outer Case, then the HP turbine disc must be inspected in accordance with the requirements of this Airworthiness Directive at the current shop visit.</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt; text-indent:-21.3pt"><span style="font-weight:bold">3.</span><span style="width:12.3pt; text-indent:0pt; display:inline-block"> </span><span style="font-weight:bold">For all other HP turbine discs specified in the Applicability of this Directive but not listed in Table 2 of this AD.</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt"><span>Inspect the HP turbine disc at next shop visit where the HP turbine rotor is removed from the Combustor Outer Case and the HP turbine disc life is greater than 700 cycles since new.</span><span> </span><span>If a HP turbine disc that meets these cyclic life criteria is currently at shop visit; and if, at the effective date of this Airworthiness Directive, it has not yet been reinstalled into the Combustion Outer Case, then the HP turbine disc must be inspected in accordance with the requirements of this Airworthiness Directive at the current shop visit.</span></p><p style="margin-top:12pt; text-align:center"><span style="font-weight:bold">Table 2</span></p><table cellspacing="0" cellpadding="0" style="margin-top:0pt; margin-bottom:0pt; border:0.75pt solid #000000; border-collapse:collapse"><tbody><tr style="height:21.25pt"><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 style="font-size:11pt"><span>Part No</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 style="font-size:11pt"><span>Serial No</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 style="font-size:11pt"><span>Part No</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 style="font-size:11pt"><span>Serial No</span></p></td></tr><tr style="height:21.25pt"><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="font-size:11pt"><span>UL2943</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="font-size:11pt"><span>LAQDY6043</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="font-size:11pt"><span>UL29472</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="font-size:11pt"><span>LQDY9125</span></p></td></tr><tr style="height:21.25pt"><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="font-size:11pt"><span>UL2943</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="font-size:11pt"><span>LAQDY6048</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="font-size:11pt"><span>UL29472</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="font-size:11pt"><span>LQDY9554</span></p></td></tr><tr style="height:21.25pt"><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="font-size:11pt"><span>UL2943</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="font-size:11pt"><span>LAQDY6079</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="font-size:11pt"><span>UL29472</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="font-size:11pt"><span>LQDY9582</span></p></td></tr><tr style="height:21.25pt"><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="font-size:11pt"><span>UL2943</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="font-size:11pt"><span>LDRCZ10057</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="font-size:11pt"><span>UL29472</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="font-size:11pt"><span>LQDY9895</span></p></td></tr><tr style="height:21.25pt"><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="font-size:11pt"><span>UL2943</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="font-size:11pt"><span>LDRCZ10264</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="font-size:11pt"><span>UL29472</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="font-size:11pt"><span>LQDY9910</span></p></td></tr><tr style="height:21.25pt"><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="font-size:11pt"><span>UL2943</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="font-size:11pt"><span>LDRCZ10415</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="font-size:11pt"><span>UL29472</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="font-size:11pt"><span>LQDY9947</span></p></td></tr><tr style="height:21.25pt"><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="font-size:11pt"><span>UL2943</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="font-size:11pt"><span>LDRCZ11402</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="font-size:11pt"><span>UL29472</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="font-size:11pt"><span>LQDY9960</span></p></td></tr><tr style="height:21.25pt"><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="font-size:11pt"><span>UL2943</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="font-size:11pt"><span>LDRCZ11425</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="font-size:11pt"><span>UL24994</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="font-size:11pt"><span>LQDY6777</span></p></td></tr><tr style="height:21.25pt"><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="font-size:11pt"><span>UL2943</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="font-size:11pt"><span>LDRCZ11497</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="font-size:11pt"><span>UL24994</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="font-size:11pt"><span>LQDY6792</span></p></td></tr><tr style="height:21.25pt"><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 style="font-size:11pt"><span>UL2943</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 style="font-size:11pt"><span>LDRCZ11663</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 style="font-size:11pt"><span>UL24994</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 style="font-size:11pt"><span>LQDY6859</span></p></td></tr></tbody></table><p style="margin-left:21.3pt; text-indent:-21.3pt"></p></td></tr></tbody></table>