80 FR 24856 - Airworthiness Directives; CFM International S.A. Turbofan Engines
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 80, Issue 84 (May 1, 2015)
Federal Aviation Administration
Federal Register Volume 80, Issue 84 (May 1, 2015)
| Page Range | 24856-24858 | |
| FR Document | 2015-09930 |
[Federal Register Volume 80, Number 84 (Friday, May 1, 2015)] [Proposed Rules] [Pages 24856-24858] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2015-09930] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2015-0277; Directorate Identifier 2015-NE-05-AD] RIN 2120-AA64 Airworthiness Directives; CFM International S.A. Turbofan Engines AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). ----------------------------------------------------------------------- SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain CFM International S.A. (CFM) CFM56-7B series turbofan engines. This proposed AD was prompted by reports of uncommanded in-flight shutdowns (IFSDs) on CFM CFM56-7B engines following rupture of the 73- tooth gearshaft located in the engine accessory gearbox (AGB). This proposed AD would require magnetic chip detector (MCD) inspection of the affected gearshafts until removal. We are proposing this AD to prevent failure of certain engine AGB gearshafts, which could lead to failure of one or more engines, loss of thrust control, and damage to the airplane. DATES: We must receive comments on this proposed AD by June 30, 2015. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods:Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments. Fax: 202-493-2251. Mail: U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590. Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this AD, contact CFM International Inc., Aviation Operations Center, 1 Neumann Way, M/D Room 285, Cincinnati, OH 45125; phone: 877-432-3272; fax: 877-432-3329; email: [email protected]. You may view this service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125. Examining the AD Docket You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2015- 0277; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this proposed AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Office (phone: 800-647-5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Kyle Gustafson, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7183; fax: 781-238-7199; email: [email protected]. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments about this proposal. Send your comments to an address listed under the ADDRESSES section. Include ``Docket No. FAA-2015-0277; Directorate Identifier 2015-NE-05-AD'' at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing date and may amend this proposed AD because of those comments. We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact we receive about this proposed AD. Discussion We have received reports of uncommanded IFSDs on CFM CFM56-7B engines following rupture of the 73-tooth gearshaft located in the engine AGB. CFM has identified an affected population of 73-tooth gearshafts that show premature wear on the teeth due to inadequate shot peening. In the process of its investigation, CFM identified an additional population of 41-tooth gearshafts that is subject to the same premature wear. The affected population of 73-tooth and 41-tooth gearshafts exhibit a surface finish that leads to loss in oil film effectiveness, causing micro-pitting which eventually [[Page 24857]] leads to material separating from the gearshaft and its eventual failure. The proposed AD requires enhanced MCD inspection until removal of the gearshaft. This enhanced inspection requires that any material, including fuzz, be sent to the particles lab for analysis to determine the source of the material. We are allowing affected engines to continue to operate for 75 flight hours (FHs) after the MCD inspection to provide sufficient time to determine the source of the material and to remove the affected gearshaft if the particles lab analysis finds that the source of the material is from an affected 73-tooth or 41- tooth gearshaft. The enhanced MCD inspection and particles lab analysis is repeated every 500 FHs after the initial MCD inspection until the affected gearshaft is removed from service. This condition, if not corrected, could result in failure of certain engine AGB gearshafts, which could lead to failure of one or more engines, loss of thrust control, and damage to the airplane. Relevant Service Information Under 1 CFR Part 51 We reviewed CFM Service Bulletin (SBs) CFM56-7B S/B 72-0964, Revision 1, dated December 15, 2014, and CFM56-7B S/B 72-0965, dated December 16, 2014. The SBs describe procedures for removal of affected 73-tooth and 41-tooth gearshafts. This service information is reasonably available; see ADDRESSES for ways to access this service information. FAA's Determination We are proposing this AD because we evaluated all the relevant information and determined the unsafe condition described previously is likely to exist or develop in other products of the same type design. Proposed AD Requirements This proposed AD would require an MCD inspection within 250 FHs since last inspection or within 25 FHs after the effective date of this AD, whichever comes later. The proposed AD would also require that the MCD inspection be repeated every 500 FHs after the initial MCD inspection until removal of the affected gearshaft. The proposed AD would also require as terminating action that the affected gearshafts be removed. Differences Between This Proposed AD and the Service Information This proposed AD would require an MCD inspection 250 FHs since last inspection or within 25 FHs after the effective date of this AD, whichever comes later. CFM SB CFM56-7B S/B 72-0964, Revision 1, dated December 15, 2014, recommends performing a MCD inspection 250 FHs since last inspection or as soon as possible if the inspection was done more than 250 FHs ago. In this proposed AD, we are not requiring that operators send the particles to CFM for analysis. We are, however, requiring that operators determine if the particles are 73-tooth gearshaft or 41-tooth gearshaft material. CFM56-7B S/B 72-0964 recommends that if any magnetic particles, including fuzz are seen, operators send the inspection results and lab analysis to CFM for disposition. Costs of Compliance We estimate that this proposed AD would affect about 67 engines installed on airplanes of U.S. registry. We also estimate that it would take about 1 hour per engine to do the inspection and 8 hours per engine to replace each affected gearshaft. We estimate thirty-six 73- tooth gearshafts and forty 41-tooth gearshafts will need replacement at a cost of $12,480 and $7,680 per part, respectively. The average labor rate is $85 per hour. Based on these figures, we estimate the cost of the proposed AD on U.S. operators to be $813,855. Authority for This Rulemaking Title 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. Subtitle VII: Aviation Programs, describes in more detail the scope of the Agency's authority. We are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: ``General requirements.'' Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. Regulatory Findings We determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would not have a substantial direct effect on the States, on the relationship between the national Government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify this proposed regulation: (1) Is not a ``significant regulatory action'' under Executive Order 12866, (2) Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska to the extent that it justifies making a regulatory distinction, and (4) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows: PART 39--AIRWORTHINESS DIRECTIVES 0 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. Sec. 39.13 [Amended] 0 2. The FAA amends Sec. 39.13 by adding the following new airworthiness directive (AD): CFM International S.A.: Docket No. FAA-2015-0277; Directorate Identifier 2015-NE-05-AD. (a) Comments Due Date We must receive comments by June 30, 2015. (b) Affected ADs None. (c) Applicability This AD applies to CFM International S.A. (CFM) CFM56-7B engines with accessory gearboxes (AGBs), with 73-tooth gearshafts or 41- tooth gearshafts, identified in Appendix A and Appendix B of CFM Service Bulletin (SB) CFM56-7B S/B 72-0964, Revision 1, dated December 15, 2014. (d) Unsafe Condition This AD was prompted by reports of uncommanded in-flight shutdowns on CFM CFM56-7B engines following rupture of the 73-tooth gearshaft located in the engine AGB. We are issuing this AD to prevent failure of certain AGB gearshafts, which could lead to failure of one or more engines, loss of thrust control, and damage to the airplane. [[Page 24858]] (e) Compliance Comply with this AD within the compliance times specified, unless already done. (1) Initial Magnetic Chip Detector (MCD) Inspection and Analysis. (i) For affected 73-tooth gearshafts, perform an MCD inspection within 250 flight hours (FHs) since last inspection, within 25 FHs from the effective date of this AD, or when the gearshaft accumulates 3,000 FHs since new, whichever comes later. (ii) For affected 41-tooth gearshafts, perform an MCD inspection within 250 FHs since last inspection, within 25 FHs from the effective date of this AD, or when the gearshaft accumulates 6,000 FHs since new, whichever comes later. (iii) If any magnetic particles, including fuzz, are seen, determine with particles lab analysis if the particles are 73-tooth or 41-tooth gearshaft material. (iv) If the particles are 73-tooth or 41-tooth gearshaft material, remove the affected gearshaft(s) within 75 FHs since the MCD inspection. (2) Repetitive MCD Inspection and Analysis. (i) For affected 73- tooth gearshafts, perform an MCD inspection and particles lab analysis within every 500 FHs since the last MCD inspection until affected gearshaft is removed. (ii) For affected 41-tooth gearshafts, perform an MCD inspection and particles lab analysis within every 500 FHs since the last MCD inspection until affected gearshaft is removed. (iii) If any magnetic particles, including fuzz, are seen, determine with particles lab analysis if the particles are 73-tooth or 41-tooth gearshaft material. (iv) If the particles are 73-tooth or 41-tooth gearshaft material, remove the affected gearshaft(s) within 75 FHs since the MCD inspection. (f) Mandatory Terminating Action (1) Remove the affected 73-tooth gearshaft prior to the gearshaft accumulating 6,000 FHs since new or within 50 FHs after the effective date of this AD, whichever comes later. (2) Remove the affected 41-tooth gearshaft prior to the gearshaft accumulating 9,000 FHs since new or within 50 FHs after the effective date of this AD, whichever comes later. (g) Installation Prohibition After the effective date of this AD, do not install an affected gearshaft into an AGB. (h) Alternative Methods of Compliance (AMOCs) The Manager, Engine Certification Office, FAA, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. You may email your request to: [email protected]. (i) Related Information (1) For more information about this AD, contact Kyle Gustafson, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7183; fax: 781-238-7199; email: [email protected]. (2) CFM SBs CFM56-7B S/B 72-0964, Revision 1, dated December 15, 2014, and CFM56-7B S/B 72-0965, dated December 16, 2014, can be obtained from GE using the contact information in paragraph (i)(3) of this proposed AD. (3) For service information identified in this AD, contact CFM International Inc., Aviation Operations Center, 1 Neumann Way, M/D Room 285, Cincinnati, OH 45125; phone: 877-432-3272; fax: 877-432- 3329; email: [email protected]. (4) You may view this service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125. Issued in Burlington, Massachusetts, on April 17, 2015. Thomas A. Boudreau, Acting Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2015-09930 Filed 4-30-15; 8:45 am] BILLING CODE 4910-13-P
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(4) After the effective date of this AD, you DEPARTMENT OF TRANSPORTATION Examining the AD Docket
are allowed to install on an airplane an
aileron assembly, having a P/N Federal Aviation Administration You may examine the AD docket on
557.05.12.015, 557.05.12.016, 557.05.12.017, the Internet at http://
or 557.05.12.018, provided that an aileron 14 CFR Part 39 www.regulations.gov by searching for
trim tab assembly, P/N 527.15.12.037 or and locating Docket No. FAA–2015–
527.15.12.038 is not installed on the airplane. 0277; or in person at the Docket
[Docket No. FAA–2015–0277; Directorate Management Facility between 9 a.m.
(g) Other FAA AD Provisions Identifier 2015–NE–05–AD]
and 5 p.m., Monday through Friday,
The following provisions also apply to this except Federal holidays. The AD docket
AD: RIN 2120–AA64 contains this proposed AD, the
(1) Alternative Methods of Compliance regulatory evaluation, any comments
(AMOCs): The Manager, Standards Office,
Airworthiness Directives; CFM received, and other information. The
FAA, has the authority to approve AMOCs International S.A. Turbofan Engines street address for the Docket Office
for this AD, if requested using the procedures AGENCY: Federal Aviation (phone: 800–647–5527) is in the
found in 14 CFR 39.19. Send information to Administration (FAA), DOT. ADDRESSES section. Comments will be
ATTN: Doug Rudolph, Aerospace Engineer, available in the AD docket shortly after
ACTION: Notice of proposed rulemaking
FAA, Small Airplane Directorate, 901 Locust, receipt.
Room 301, Kansas City, Missouri 64106;
(NPRM).
FOR FURTHER INFORMATION CONTACT: Kyle
telephone: (816) 329–4059; fax: (816) 329– SUMMARY: We propose to adopt a new Gustafson, Aerospace Engineer, Engine
4090; email: doug.rudolph@faa.gov. Before airworthiness directive (AD) for certain Certification Office, FAA, Engine &
using any approved AMOC on any airplane CFM International S.A. (CFM) CFM56– Propeller Directorate, 12 New England
to which the AMOC applies, notify your 7B series turbofan engines. This Executive Park, Burlington, MA 01803;
appropriate principal inspector (PI) in the
proposed AD was prompted by reports phone: 781–238–7183; fax: 781–238–
FAA Flight Standards District Office (FSDO),
of uncommanded in-flight shutdowns 7199; email: kyle.gustafson@faa.gov.
or lacking a PI, your local FSDO.
(IFSDs) on CFM CFM56–7B engines SUPPLEMENTARY INFORMATION:
(2) Airworthy Product: For any requirement
following rupture of the 73-tooth
in this AD to obtain corrective actions from
gearshaft located in the engine accessory Comments Invited
a manufacturer or other source, use these
gearbox (AGB). This proposed AD We invite you to send any written
actions if they are FAA-approved. Corrective
would require magnetic chip detector relevant data, views, or arguments about
actions are considered FAA-approved if they
are approved by the State of Design Authority
(MCD) inspection of the affected this proposal. Send your comments to
(or their delegated agent). You are required
gearshafts until removal. We are an address listed under the ADDRESSES
to assure the product is airworthy before it proposing this AD to prevent failure of section. Include ‘‘Docket No. FAA–
is returned to service. certain engine AGB gearshafts, which 2015–0277; Directorate Identifier 2015–
could lead to failure of one or more NE–05–AD’’ at the beginning of your
(h) Related Information engines, loss of thrust control, and comments. We specifically invite
Refer to MCAI European Aviation Safety damage to the airplane. comments on the overall regulatory,
Agency (EASA) AD No.: 2015–0060, dated DATES: We must receive comments on economic, environmental, and energy
April 10, 2015, for related information. You this proposed AD by June 30, 2015. aspects of this proposed AD. We will
may examine the MCAI on the Internet at ADDRESSES: You may send comments, consider all comments received by the
http://www.regulations.gov by searching for using the procedures found in 14 CFR closing date and may amend this
and locating Docket No. FAA–2015–1177. proposed AD because of those
11.43 and 11.45, by any of the following
For service information related to this AD,
methods: comments.
contact PILATUS AIRCRAFT LTD, Customer
• Federal eRulemaking Portal: Go to We will post all comments we
Support Manager, CH–6371 STANS,
http://www.regulations.gov. Follow the receive, without change, to http://
Switzerland; phone: +41 (0)41 619 33 33; fax:
instructions for submitting comments. www.regulations.gov, including any
+41 (0)41 619 73 11; email: SupportPC12@
pilatus-aircraft.com; Internet: http://
• Fax: 202–493–2251. personal information you provide. We
www.pilatus-aircraft.com. You may review • Mail: U.S. Department of will also post a report summarizing each
this referenced service information at the Transportation, Docket Operations, M– substantive verbal contact we receive
FAA, Small Airplane Directorate, 901 Locust, 30, West Building Ground Floor, Room about this proposed AD.
Kansas City, Missouri 64106. For information W12–140, 1200 New Jersey Avenue SE.,
Discussion
on the availability of this material at the Washington, DC 20590.
FAA, call (816) 329–4148. • Hand Delivery: Deliver to Mail We have received reports of
address above between 9 a.m. and 5 uncommanded IFSDs on CFM CFM56–
Issued in Kansas City, Missouri, on April p.m., Monday through Friday, except 7B engines following rupture of the 73-
23, 2015. Federal holidays. tooth gearshaft located in the engine
Earl Lawrence, For service information identified in AGB. CFM has identified an affected
Manager, Small Airplane Directorate, Aircraft this AD, contact CFM International Inc., population of 73-tooth gearshafts that
Certification Service. Aviation Operations Center, 1 Neumann show premature wear on the teeth due
Way, M/D Room 285, Cincinnati, OH to inadequate shot peening. In the
mstockstill on DSK4VPTVN1PROD with PROPOSALS
[FR Doc. 2015–10073 Filed 4–30–15; 8:45 am]
BILLING CODE 4910–13–P 45125; phone: 877–432–3272; fax: 877– process of its investigation, CFM
432–3329; email: aviation.fleetsupport@ identified an additional population of
ge.com. You may view this service 41-tooth gearshafts that is subject to the
information at the FAA, Engine & same premature wear. The affected
Propeller Directorate, 12 New England population of 73-tooth and 41-tooth
Executive Park, Burlington, MA. For gearshafts exhibit a surface finish that
information on the availability of this leads to loss in oil film effectiveness,
material at the FAA, call 781–238–7125. causing micro-pitting which eventually
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![Federal Register / Vol. 80, No. 84 / Friday, May 1, 2015 / Proposed Rules 24857
leads to material separating from the 72–0964, Revision 1, dated December responsibilities among the various
gearshaft and its eventual failure. 15, 2014, recommends performing a levels of government.
The proposed AD requires enhanced MCD inspection 250 FHs since last For the reasons discussed above, I
MCD inspection until removal of the inspection or as soon as possible if the certify this proposed regulation:
gearshaft. This enhanced inspection inspection was done more than 250 FHs (1) Is not a ‘‘significant regulatory
requires that any material, including ago. action’’ under Executive Order 12866,
fuzz, be sent to the particles lab for In this proposed AD, we are not
analysis to determine the source of the (2) Is not a ‘‘significant rule’’ under
requiring that operators send the the DOT Regulatory Policies and
material. We are allowing affected particles to CFM for analysis. We are,
engines to continue to operate for 75 Procedures (44 FR 11034, February 26,
however, requiring that operators 1979),
flight hours (FHs) after the MCD determine if the particles are 73-tooth
inspection to provide sufficient time to gearshaft or 41-tooth gearshaft material. (3) Will not affect intrastate aviation
determine the source of the material and CFM56–7B S/B 72–0964 recommends in Alaska to the extent that it justifies
to remove the affected gearshaft if the that if any magnetic particles, including making a regulatory distinction, and
particles lab analysis finds that the fuzz are seen, operators send the (4) Will not have a significant
source of the material is from an inspection results and lab analysis to economic impact, positive or negative,
affected 73-tooth or 41-tooth gearshaft. CFM for disposition. on a substantial number of small entities
The enhanced MCD inspection and under the criteria of the Regulatory
particles lab analysis is repeated every Costs of Compliance Flexibility Act.
500 FHs after the initial MCD inspection We estimate that this proposed AD List of Subjects in 14 CFR Part 39
until the affected gearshaft is removed would affect about 67 engines installed
from service. This condition, if not on airplanes of U.S. registry. We also Air transportation, Aircraft, Aviation
corrected, could result in failure of estimate that it would take about 1 hour safety, Incorporation by reference,
certain engine AGB gearshafts, which per engine to do the inspection and 8 Safety.
could lead to failure of one or more hours per engine to replace each
engines, loss of thrust control, and The Proposed Amendment
affected gearshaft. We estimate thirty-six
damage to the airplane. 73-tooth gearshafts and forty 41-tooth Accordingly, under the authority
Relevant Service Information Under 1 gearshafts will need replacement at a delegated to me by the Administrator,
CFR Part 51 cost of $12,480 and $7,680 per part, the FAA proposes to amend 14 CFR part
respectively. The average labor rate is 39 as follows:
We reviewed CFM Service Bulletin $85 per hour. Based on these figures, we
(SBs) CFM56–7B S/B 72–0964, Revision estimate the cost of the proposed AD on PART 39—AIRWORTHINESS
1, dated December 15, 2014, and U.S. operators to be $813,855. DIRECTIVES
CFM56–7B S/B 72–0965, dated
December 16, 2014. The SBs describe Authority for This Rulemaking ■ 1. The authority citation for part 39
procedures for removal of affected 73- Title 49 of the United States Code continues to read as follows:
tooth and 41-tooth gearshafts. This specifies the FAA’s authority to issue Authority: 49 U.S.C. 106(g), 40113, 44701.
service information is reasonably rules on aviation safety. Subtitle I,
available; see ADDRESSES for ways to section 106, describes the authority of § 39.13 [Amended]
access this service information. the FAA Administrator. Subtitle VII: ■ 2. The FAA amends § 39.13 by adding
FAA’s Determination Aviation Programs, describes in more the following new airworthiness
detail the scope of the Agency’s directive (AD):
We are proposing this AD because we
authority. CFM International S.A.: Docket No. FAA–
evaluated all the relevant information
and determined the unsafe condition We are issuing this rulemaking under 2015–0277; Directorate Identifier 2015–
described previously is likely to exist or the authority described in Subtitle VII, NE–05–AD.
develop in other products of the same Part A, Subpart III, Section 44701: (a) Comments Due Date
type design. ‘‘General requirements.’’ Under that
section, Congress charges the FAA with We must receive comments by June 30,
Proposed AD Requirements 2015.
promoting safe flight of civil aircraft in
This proposed AD would require an air commerce by prescribing regulations (b) Affected ADs
MCD inspection within 250 FHs since for practices, methods, and procedures None.
last inspection or within 25 FHs after the Administrator finds necessary for
(c) Applicability
the effective date of this AD, whichever safety in air commerce. This regulation
is within the scope of that authority This AD applies to CFM International S.A.
comes later. The proposed AD would (CFM) CFM56–7B engines with accessory
also require that the MCD inspection be because it addresses an unsafe condition
gearboxes (AGBs), with 73-tooth gearshafts or
repeated every 500 FHs after the initial that is likely to exist or develop on 41-tooth gearshafts, identified in Appendix A
MCD inspection until removal of the products identified in this rulemaking and Appendix B of CFM Service Bulletin
affected gearshaft. The proposed AD action. (SB) CFM56–7B S/B 72–0964, Revision 1,
would also require as terminating action Regulatory Findings dated December 15, 2014.
mstockstill on DSK4VPTVN1PROD with PROPOSALS
that the affected gearshafts be removed. (d) Unsafe Condition
We determined that this proposed AD
Differences Between This Proposed AD would not have federalism implications This AD was prompted by reports of
and the Service Information under Executive Order 13132. This uncommanded in-flight shutdowns on CFM
CFM56–7B engines following rupture of the
This proposed AD would require an proposed AD would not have a 73-tooth gearshaft located in the engine AGB.
MCD inspection 250 FHs since last substantial direct effect on the States, on We are issuing this AD to prevent failure of
inspection or within 25 FHs after the the relationship between the national certain AGB gearshafts, which could lead to
effective date of this AD, whichever Government and the States, or on the failure of one or more engines, loss of thrust
comes later. CFM SB CFM56–7B S/B distribution of power and control, and damage to the airplane.
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(e) Compliance (2) CFM SBs CFM56–7B S/B 72–0964, You may review the public docket
Comply with this AD within the Revision 1, dated December 15, 2014, and containing the proposal, any comments
compliance times specified, unless already CFM56–7B S/B 72–0965, dated December 16, received, and any final disposition in
done. 2014, can be obtained from GE using the
person in the Dockets Office between
(1) Initial Magnetic Chip Detector (MCD) contact information in paragraph (i)(3) of this
proposed AD. 9:00 a.m. and 5:00 p.m., Monday
Inspection and Analysis. (i) For affected 73- through Friday, except Federal holidays.
tooth gearshafts, perform an MCD inspection (3) For service information identified in
within 250 flight hours (FHs) since last this AD, contact CFM International Inc., The Docket Office (telephone 1–800–
inspection, within 25 FHs from the effective Aviation Operations Center, 1 Neumann 647–5527), is on the ground floor of the
date of this AD, or when the gearshaft Way, M/D Room 285, Cincinnati, OH 45125; building at the above address.
accumulates 3,000 FHs since new, whichever phone: 877–432–3272; fax: 877–432–3329; FAA Order 7400.9Y, Airspace
comes later. email: aviation.fleetsupport@ge.com. Designations and Reporting Points, and
(ii) For affected 41-tooth gearshafts, (4) You may view this service information
at the FAA, Engine & Propeller Directorate,
subsequent amendments can be viewed
perform an MCD inspection within 250 FHs online at http://www.faa.gov/air_traffic/
since last inspection, within 25 FHs from the 12 New England Executive Park, Burlington,
effective date of this AD, or when the MA. For information on the availability of publications/. The Order is also
gearshaft accumulates 6,000 FHs since new, this material at the FAA, call 781–238–7125. available for inspection at the National
whichever comes later. Issued in Burlington, Massachusetts, on
Archives and Records Administration
(iii) If any magnetic particles, including April 17, 2015. (NARA). For information on the
fuzz, are seen, determine with particles lab
Thomas A. Boudreau,
availability of this proposed
analysis if the particles are 73-tooth or 41- incorporation by reference material at
tooth gearshaft material. Acting Manager, Engine & Propeller
Directorate, Aircraft Certification Service.
NARA, call 202–741–6030, or go to
(iv) If the particles are 73-tooth or 41-tooth http://www.archives.gov/federal_
gearshaft material, remove the affected [FR Doc. 2015–09930 Filed 4–30–15; 8:45 am]
register/code_of_federal-regulations/ibr_
gearshaft(s) within 75 FHs since the MCD BILLING CODE 4910–13–P
inspection.
locations.html.
(2) Repetitive MCD Inspection and FAA Order 7400.9, Airspace
Analysis. (i) For affected 73-tooth gearshafts, DEPARTMENT OF TRANSPORTATION Designations and Reporting Points, is
perform an MCD inspection and particles lab published yearly and effective on
analysis within every 500 FHs since the last Federal Aviation Administration September 15. For further information,
MCD inspection until affected gearshaft is you can contact the Airspace Policy and
removed. Regulations Group, Federal Aviation
14 CFR Part 71
(ii) For affected 41-tooth gearshafts,
perform an MCD inspection and particles lab
Administration, 800 Independence
[Docket No. FAA–2014–1069; Airspace
analysis within every 500 FHs since the last Docket No. 14–ANM–11]
Avenue SW., Washington, DC 20591;
MCD inspection until affected gearshaft is telephone: 202–267–8783.
removed. Proposed Amendment of Class D and FOR FURTHER INFORMATION CONTACT:
(iii) If any magnetic particles, including Class E Airspace, Revocation of Class Steve Haga, Federal Aviation
fuzz, are seen, determine with particles lab E Airspace; Salem, OR Administration, Operations Support
analysis if the particles are 73-tooth or 41-
tooth gearshaft material. AGENCY: Federal Aviation Group, Western Service Center, 1601
(iv) If the particles are 73-tooth or 41-tooth Administration (FAA), DOT. Lind Avenue SW., Renton, WA 98057;
gearshaft material, remove the affected telephone (425) 203–4563.
ACTION: Notice of proposed rulemaking
gearshaft(s) within 75 FHs since the MCD SUPPLEMENTARY INFORMATION:
inspection.
(NPRM).
SUMMARY: This action proposes to Comments Invited
(f) Mandatory Terminating Action
(1) Remove the affected 73-tooth gearshaft modify Class D airspace, Class E surface Interested parties are invited to
prior to the gearshaft accumulating 6,000 FHs area airspace, Class E airspace extending participate in this proposed rulemaking
since new or within 50 FHs after the effective upward from 700 feet above the surface, by submitting such written data, views,
date of this AD, whichever comes later. and remove Class E surface area or arguments, as they may desire.
(2) Remove the affected 41-tooth gearshaft airspace designated as an extension at Comments that provide the factual basis
prior to the gearshaft accumulating 9,000 FHs McNary Field, Salem, OR. After a supporting the views and suggestions
since new or within 50 FHs after the effective biennial review, the FAA found it
date of this AD, whichever comes later. presented are particularly helpful in
necessary to amend the airspace area for developing reasoned regulatory
(g) Installation Prohibition the safety and management of decisions on the proposal. Comments
After the effective date of this AD, do not Instrument Flight Rules (IFR) operations are specifically invited on the overall
install an affected gearshaft into an AGB. for Standard Instrument Approach regulatory, aeronautical, economic,
Procedures (SIAPs) at the airport. environmental, and energy-related
(h) Alternative Methods of Compliance
(AMOCs) DATES: Comments must be received on aspects of the proposal.
or before June 15, 2015. Communications should identify both
The Manager, Engine Certification Office,
FAA, may approve AMOCs for this AD. Use ADDRESSES: Send comments on this docket numbers and be submitted in
the procedures found in 14 CFR 39.19 to proposal to the U.S. Department of triplicate to the address listed above.
make your request. You may email your Transportation, Docket Operations, M– Commenters wishing the FAA to
request to: ANE-AD-AMOC@faa.gov. 30, West Building Ground Floor, Room acknowledge receipt of their comments
mstockstill on DSK4VPTVN1PROD with PROPOSALS
(i) Related Information W12–140, 1200 New Jersey Avenue SE., on this notice must submit with those
Washington, DC 20590; telephone (202) comments a self-addressed, stamped
(1) For more information about this AD,
366–9826. You must identify FAA postcard on which the following
contact Kyle Gustafson, Aerospace Engineer,
Engine Certification Office, FAA, Engine & Docket No. FAA–2014–1069; Airspace statement is made: ‘‘Comments to
Propeller Directorate, 12 New England Docket No. 14–ANM–11, at the Docket No. FAA–2014–1069/Airspace
Executive Park, Burlington, MA 01803; beginning of your comments. You may Docket No. 14–ANM–11.’’ The postcard
phone: 781–238–7183; fax: 781–238–7199; also submit comments through the will be date/time stamped and returned
email: kyle.gustafson@faa.gov. Internet at http://www.regulations.gov. to the commenter.
VerDate Sep<11>2014 16:34 Apr 30, 2015 Jkt 235001 PO 00000 Frm 00021 Fmt 4702 Sfmt 4702 E:\FR\FM\01MYP1.SGM 01MYP1](https://thefederalregister.org/doc/80_FR_24940/page/3.svg)
Document Created: 2018-02-21 10:21:15
Document Modified: 2018-02-21 10:21:15
| Category | Regulatory Information | |
| Collection | Federal Register | |
| sudoc Class | AE 2.7: GS 4.107: AE 2.106: | |
| Publisher | Office of the Federal Register, National Archives and Records Administration | |
| Section | Proposed Rules | |
| Action | Notice of proposed rulemaking (NPRM). | |
| Dates | We must receive comments on this proposed AD by June 30, 2015. | |
| Contact | Kyle Gustafson, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7183; fax: 781-238-7199; email: [email protected] | |
| FR Citation | 80 FR 24856 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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