Airworthiness Directive · Amendment 39-16429 · Rolls-Royce Corporation (RRC) AE 3007A Series Turbofan Engines
Rolls-Royce Corporation (RRC) AE 3007A Series Turbofan Engines
Superseded. A later AD replaced this one: AD 2013-26-06. Comply with the one in force.
This AD applies to Rolls-Royce Corporation (RRC) AE 3007A series turbofan engines with high-pressure turbine (HPT) stage 2 wheels, part numbers (P/Ns) 23069438, 23069592, 23074462, 23074644, 23075345, or 23084520 installed. These engines are installed on, but not limited to, Empresa Brasileira de Aeronautica S. A. (EMBRAER) EMB-135 and EMB-145 airplanes.
The FAA is superseding an existing airworthiness directive (AD) for RRC AE 3007A series turbofan engines. That AD currently requires performing an eddy current inspection (ECI) or surface wave ultrasonic test (SWUT) inspection on each affected high-pressure turbine (HPT) wheel. This AD requires removing or performing initial and repetitive ECIs or SWUT inspections on HPT stage 2 wheels for cracks. This AD also reduces the approved life limits of certain HPT stage 2 wheels. This AD results from reports of cracked HPT stage 2 wheels. We are issuing this AD to prevent uncontained failure of the HPT stage 2 wheel and damage to the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done.
The following engines are exempt from the inspection requirements of this AD:
(1) All engines with an HPT stage 2 wheel, P/N 23084520.
(2) All engines with an HPT stage 2 wheel, P/N 23075345, that has a serial number (S/N) specified in Table 1 of this AD, and
(3) All engines with an HPT stage 2 wheel, P/N 23074462, that has a S/N specified in Table 2 of this AD.
| MM507646 | MM508211 | MM508319 |
| MM508144 | MM508221 | MM508320 |
| MM508153 | MM508241 | MM508322 |
| MM508176 | MM508248 | MM508337 |
| MM508186 | MM508251 | MM508338 |
| MM508188 | MM508264 | MM508382 |
| MM508205 | MM508305 | MM508387 |
| MM508208 | MM508311 |
| MM504890 | MM505025 | MM505054 |
| MM504963 | MM505034 | MM505055 |
| MM504990 | MM505041 | MM505056 |
| MM504995 | MM505045 | MM505061 |
| MM505007 | MM505046 | All `MM' prefix S/Ns higher than MM505061 |
| MM505017 | MM505048 | All S/Ns with `MW' prefix |
For engines with an HPT stage 2 wheel, P/Ns 23069438, 23069592, 23074462, 23074644, or 23075345, remove the engine from service or perform an initial inspection of the wheel by the cycle limit specified in Table 3 of this AD. Use one of the following methods for the inspection:
(1) For HPT stage 2 wheels that have S/Ns listed in Table 4 of this AD, use paragraphs 2.A. through 2.C.(4) of RRC Alert Service Bulletin (ASB) AE 3007A-A-72-367, Revision 2 dated June 22, 2009, to inspect the wheel.
(2) For HPT stage 2 wheels that have S/Ns not listed in Table 4 of this AD, use paragraphs 2.A. through 2.C.(4) of RRC ASB AE 3007A-A-72-367, Revision 2, dated June 22, 2009, or use paragraphs 2.A. through 2.N. of RRC Service Bulletin (SB) AE 3007A-72-368, Revision 3, dated May 24, 2010; or use 2.A. through 2.V.(4) of RRC SB AE 3007A-72-369, Revision 2, dated November 5, 2009, to perform the inspections.
| For HPT stage 2 wheels with the following CSN on the effective date of this AD: | Remove engine from service or inspect wheel within the following cycles-in-service (CIS) after the effective date of this AD: |
|---|---|
| (3) 17,500 or more CSN | Remove engine from service or inspect before next flight. |
| (4) 10,000 to 17,499 CSN | 15 CIS. |
| (5) 9,999 or fewer CSN | Before accumulating 10,015 CSN. |
(6) Inspections performed before the effective date of this AD using earlier versions of RRC ASB AE 3007A-A-72-367 or RRC SB AE 3007A-72-368 or RRC SB AE 3007A-72-369 comply with the requirements of paragraphs (g)(1) and (g)(2) of this AD.
| HPT stage 2 wheels requiring ECI method only | |
| MM119400 | MM183796 |
| MM119480 | MM183808 |
| MM119508 | MM183831 |
| MM155847 | MM228730 |
| MM155907 | MM228951 |
| MM155908 | MM503748 |
| MM183236 | MM504004 |
| MM183362 | MM57188 |
| MM183754 | MM57440 |
| MM183762 | MM57480 |
After the effective date of this AD, don't return to service, any HPT stage 2 wheel that was installed in any RRC AE 3007A series engine that has been removed as a result of the inspection requirements of this AD, unless the HPT stage 2 wheel was inspected as specified in RRC ASB AE 3007A-A-72-367, Revision 2, dated June 22, 2009; or RRC SB AE 3007A-72-368, Revision 3, dated May 24, 2010; or RRC SB AE 3007A-72-369, Revision 2, dated November 5, 2009.
(i) Thereafter, within 3,000 cycles-since-last inspection performed as a result of this AD or its predecessor ADs (Emergency ADs 2008-19-51, AD 2008-26-06, and 2009-08-51), remove the engine from service until an ECI or SWUT inspection is performed on the HPT stage 2 wheel. Use paragraphs 2.A. through 2.C.(4) of RRC ASB AE 3007A-A-72-367, Revision 2, dated June 22, 2009, or use paragraphs 2.A. through 2.N. of RRC SB AE 3007A-72-368, Revision 3, dated May 24, 2010; or use 2.A. through 2.V.(4) of RRC SB AE 3007A-72-369, Revision 2, dated November 5, 2009, to inspect the wheel.
For HPT stage 2 wheels, P/N 23084520, do the following:
(1) For wheels that have 22,985 CSN or more on the effective date of this AD, remove the wheel from service within 15 CIS after the effective date of this AD.
(2) Thereafter, remove HPT stage 2 wheels, P/N 23084520, before exceeding the new, reduced engine cycle life limit (ECLL) of 23,000 CSN.
(k) For HPT stage 2 wheels, P/N 23075345 and 23074644, do the following:
(1) For wheels that have 19,985 CSN or more on the effective date of this AD, remove the wheel from service within 15 CIS after the effective date of this AD unless paragraph (k)(3) of this AD applies.
(2) Thereafter, remove HPT stage 2 wheels, P/N 23075345 and 23074644, before exceeding the new, reduced ECLL of 20,000 CSN.
(3) For HPT stage 2 wheels, P/N 23075345, that have a S/N listed in Table 5 of this AD and that have 22,985 CSN or more on the effective date of this AD, remove the wheel from service within 15 CIS after the effective date of this AD.
(4) Thereafter, for HPT stage 2 wheels, P/N 23075345, that have a S/N listed in Table 5 of this AD, remove the wheel from service before exceeding the new, reduced ECLL of 23,000 CSN.
| MM507646 | MM508205 | MM508251 | MM508322 |
| MM508144 | MM508208 | MM508264 | MM508337 |
| MM508153 | MM508211 | MM508305 | MM508338 |
| MM508176 | MM508221 | MM508311 | MM508382 |
| MM508186 | MM508241 | MM508319 | MM508387 |
| MM508188 | MM508248 | MM508320 |
(l) For wheels, P/N 23069438, in engines that have not complied with RRC SB AE 3007A-72-176, Revision 5, dated September 2, 2008, or earlier version; or SB AE 3007A-72-215, Revision 2, dated September 28, 2009, or earlier version, remove the wheel before exceeding the new, reduced ECLL of 10,000 CSN.
(m) For wheels, P/N 23069438, in engines that have complied with RRC SB AE 3007A-72-176, Revision 5, dated September 2, 2008, or earlier version; or SB AE 3007A-72-215, Revision 2, dated September 28, 2009, or earlier version; do the following:
(1) For wheels that have 19,985 CSN or more on the effective date of this AD, remove the wheel from service within 15 CIS after the effective date of this AD.
(2) Thereafter, remove the wheel from service before exceeding the new, reduced ECLL of 20,000 CSN.
