Airworthiness Directives; CFM International S.A. Turbofan Engines, 49487-49490 [2019-20054]

Download as PDF Federal Register / Vol. 84, No. 183 / Friday, September 20, 2019 / Proposed Rules 670BA–25–100, Revision C, dated May 11, 2017. (i) For airplanes with the accumulation of 780 total flight hours or more as of December 15, 2015 (the effective date of AD 2015–24– 04): Inspect within 100 flight hours after December 15, 2015. (ii) For airplanes that have accumulated less than 780 total flight hours as of December 15, 2015 (the effective date of AD 2015–24–04): Inspect before accumulating 880 total flight hours after December 15, 2015. (2) Within 30 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to incorporate the information specified in Task 255000–208, ‘‘Detailed Inspection of the Aft Cargo Compartment Window-Louver Panel Assembly and Blowout Panels Along with Their Respective Cage Assemblies,’’ as specified in Bombardier CRJ Regional Jet TR MRB–0079, dated May 29, 2017, to Part 1 of the Bombardier CRJ Series Regional Jet MRM, CSP B–053. The initial compliance time for accomplishing the task is within 880 flight hours from the last inspection performed in accordance with Bombardier Service Bulletin 670BA–25–100, Revision C, dated May 11, 2017. Accomplishing the actions required by this paragraph terminates the inspection requirement in paragraph (h)(1) of this AD. khammond on DSKJM1Z7X2PROD with PROPOSALS (i) Credit for Previous Actions (1) This paragraph provides credit for actions required by paragraph (g)(1) of this AD, if those actions were performed before the effective date of this AD using the service information identified in paragraphs (i)(1)(i) through (iii) of this AD. (i) Bombardier Service Bulletin 601R–25– 201, dated July 21, 2015. (ii) Bombardier Service Bulletin 601R–25– 201, Revision A, dated October 21, 2015. (iii) Bombardier Service Bulletin 601R–25– 201, Revision B, dated February 2, 2016. (2) This paragraph provides credit for actions required by paragraph (h)(1) of this AD, if those actions were performed before the effective date of this AD using the service information identified in paragraphs (i)(2)(i) through (iii) of this AD. (i) Bombardier Service Bulletin 670BA–25– 100, dated July 21, 2015. (ii) Bombardier Service Bulletin 670BA– 25–100, Revision A, dated October 21, 2015. (iii) Bombardier Service Bulletin 670BA– 25–100, Revision B, dated February 2, 2016. (j) Other FAA AD Provisions (1) Alternative Methods of Compliance (AMOCs): The Manager, New York ACO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to ATTN: Program Manager, Continuing Operational Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516–228–7300; fax 516–794–5531. (2) Contacting the Manufacturer: For any requirement in this AD to obtain corrective VerDate Sep<11>2014 16:49 Sep 19, 2019 Jkt 247001 actions from a manufacturer, the action must be accomplished using a method approved by the Manager, New York ACO Branch, FAA; or Transport Canada Civil Aviation (TCCA); or Bombardier, Inc.’s TCCA Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature. (k) Related Information (1) Refer to Mandatory Continuing Airworthiness Information (MCAI) Canadian AD CF–2015–28R2, dated February 4, 2019; for related information. This MCAI may be found in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA–2019–0526. (2) For more information about this AD, contact Darren Gassetto, Aerospace Engineer, Mechanical Systems and Administrative Services Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516–228– 7323; fax 516–794–5531; email 9-avs-nyacocos@faa.gov. (3) For service information identified in this AD, contact Bombardier, Inc., 400 CoˆteVertu Road West, Dorval, Que´bec H4S 1Y9, Canada; Widebody Customer Response Center North America toll-free telephone 1– 866–538–1247 or direct-dial telephone 1– 514–855–2999; fax 514–855–7401; email ac.yul@aero.bombardier.com; internet https:// www.bombardier.com. You may view this service information at the FAA, Transport Standards Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. Issued in Des Moines, Washington, on September 16, 2019. Suzanne Masterson, Acting Director, System Oversight Division, Aircraft Certification Service. [FR Doc. 2019–20333 Filed 9–19–19; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2019–0568; Product Identifier 2019–NE–20–AD] RIN 2120–AA64 Airworthiness Directives; CFM International S.A. Turbofan Engines Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: The FAA proposes to adopt a new airworthiness directive (AD) for all CFM International, S.A. (CFM) CFM56– 5B and CFM56–7B model turbofan engines with a certain high-pressure turbine (HPT) inner stationary seal installed. This proposed AD was SUMMARY: PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 49487 prompted by cracks found in the rotating air HPT front seal. This proposed AD would require removal, inspection, and replacement of the affected HPT inner stationary seal, and depending on the findings, removal and replacement of the rotating air HPT front seal. The FAA is proposing this AD to address the unsafe condition on these products. DATES: The FAA must receive comments on this proposed AD by November 4, 2019. 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 https://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 NPRM, 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: aviation.fleetsupport@ge.com. You may view this service information at the FAA, Engine and Propeller Standards Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781–238–7759. ADDRESSES: Examining the AD Docket You may examine the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2019– 0568; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this NPRM, the regulatory evaluation, any comments received, and other information. The street address for Docket Operations is listed above. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Christopher McGuire, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781–238–7120; fax: 781–238– 7199; email: chris.mcguire@faa.gov. SUPPLEMENTARY INFORMATION: E:\FR\FM\20SEP1.SGM 20SEP1 49488 Federal Register / Vol. 84, No. 183 / Friday, September 20, 2019 / Proposed Rules Comments Invited The FAA invites 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–2019–0568; Product Identifier 2019–NE–20–AD’’ at the beginning of your comments. The FAA specifically invites comments on the overall regulatory, economic, environmental, and energy aspects of this NPRM. The FAA will consider all comments received by the closing date and may amend this NPRM because of those comments. The FAA will post all comments received, without change, to https:// www.regulations.gov, including any personal information you provide. The FAA will also post a report summarizing each substantive verbal contact received about this NPRM. Discussion The FAA received a report that two cracks were discovered on a CFM CFM56–5B model turbofan engine rotating air HPT front seal during a routine engine shop visit. After investigation, CFM determined that the HPT inner stationary seal, part number 1808M56G01, may not have received the correct braze heat treat cycle at the time of the honeycomb replacement. As a result, the affected HPT inner stationary seal could lead to a localized separation of the replaced honeycomb, which may affect the life of the rotating air HPT front seal. This condition, if not addressed, could result in an uncontained release of the rotating air HPT front seal, damage to the engine, and damage to the airplane. Related Service Information Under 1 CFR Part 51 The FAA reviewed CFM Service Bulletin (SB) CFM56–5B S/B 72–0952, dated April 23, 2019, and CFM SB CFM56–7B S/B 72–1054, dated April 23, 2019. CFM SB CFM56–5B S/B 72– 0952, dated April 23, 2019, describes procedures for repairing the CFM56–5B turbofan engine HPT inner stationary seal honeycomb. CFM SB CFM56–7B S/B 72–1054, dated April 23, 2019, describes procedures for repairing the CFM56–7B turbofan engine HPT inner stationary seal honeycomb. This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section. FAA’s Determination The FAA is proposing this AD because it 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 removal, inspection, and replacement of the affected HPT inner stationary seal and, depending on the findings, removal and replacement of the rotating air HPT front seal with a part eligible for installation. Costs of Compliance The FAA estimates that this proposed AD affects 210 engines installed on airplanes of U.S. registry. Operators have the option to replace or repair the affected HPT inner stationary seal. The part cost is for replacement with a repaired HPT inner stationary seal. The FAA estimates the following costs to comply with this proposed AD: ESTIMATED COSTS Action Labor cost Replace HPT inner stationary seal ................. Inspect HPT inner stationary seal .................. 1 work-hour × $85 per hour = $85 ................. 1 work-hour × $85 per hour = $85 ................. The FAA estimates the following costs to do any necessary replacements that would be required based on the Parts cost results of the proposed inspection. The FAA has no way of determining the $7,910 0 Cost per product $7,995 85 Cost on U.S. operators $1,678,950 17,850 number of engines that might need these replacements: ON-CONDITION COSTS Action Labor cost Replace rotating air HPT front seal .............................. Inspect HPT rotor blade internal cavities ..................... Replace HPT rotor blade (pair) .................................... Replace No. 3 ball bearing ........................................... khammond on DSKJM1Z7X2PROD with PROPOSALS 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. The FAA is issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: ‘‘General requirements.’’ Under VerDate Sep<11>2014 16:49 Sep 19, 2019 Jkt 247001 1 1 1 1 work-hour work-hour work-hour work-hour × × × × $85 $85 $85 $85 per per per per hour hour hour hour = = = = $85 $85 $85 $85 Parts cost ............................... ............................... ............................... ............................... 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. This AD is issued in accordance with authority delegated by the Executive PO 00000 Frm 00006 Fmt 4702 Sfmt 4702 $344,600 0 31,000 30,000 Cost per product $344,685 85 31,085 30,085 Director, Aircraft Certification Service, as authorized by FAA Order 8000.51C. In accordance with that order, issuance of ADs is normally a function of the Compliance and Airworthiness Division, but during this transition period, the Executive Director has delegated the authority to issue ADs applicable to engines, propellers, and associated appliances to the Manager, Engine and Propeller Standards Branch, Policy and Innovation Division. E:\FR\FM\20SEP1.SGM 20SEP1 Federal Register / Vol. 84, No. 183 / Friday, September 20, 2019 / Proposed Rules Regulatory Findings The FAA 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) Will not affect intrastate aviation in Alaska, and (3) 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 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): ■ CFM International, S.A.: Docket No. FAA– 2019–0568; Product Identifier 2019–NE– 20–AD. (a) Comments Due Date The FAA must receive comments by November 4, 2019. khammond on DSKJM1Z7X2PROD with PROPOSALS (b) Affected ADs None. (c) Applicability (1) This AD applies to all CFM International, S.A. (CFM) CFM56–5B1, –5B1/ 2P, –5B1/3, –5B1/P, –5B2, –5B2/2P, –5B2/3, –5B2/P, –5B3/2P, –5B3/2P1, –5B3/3, –5B3/ 3B1, –5B3/P, –5B3/P1, –5B4, –5B4/2P, –5B4/ 2P1, –5B4/3, –5B4/3B1, –5B4/P, –5B4/P1, –5B5, –5B5/3, –5B5/P, –5B6, –5B6/2P, –5B6/ 3, –5B6/P, –5B7, –5B7/3, –5B7/P, –5B8/3, –5B8/P, –5B9/2P, –5B9/3, –5B9/P, CFM56– 7B20, –7B20/2, –7B20/3, –7B20E, –7B22, –7B22/2, –7B22/3, –7B22/3B1, –7B22/B1, –7B22E, –7B22E/B1, –7B24, –7B24/2, –7B24/ 3, –7B24/3B1, –7B24/B1, –7B24E, –7B24E/ B1, –7B26, –7B26/2, –7B26/3, –7B26/3B1, VerDate Sep<11>2014 16:49 Sep 19, 2019 Jkt 247001 –7B26/3B2, –7B26/3B2F, –7B26/3F, –7B26/ B1, –7B26/B2, –7B26E, –7B26E/B1, –7B26E/ B2, –7B26E/B2F, –7B26E/F, –7B27, –7B27/2, –7B27/3, –7B27/3B1, –7B27/3B1F, –7B27/ 3B3, –7B27/3F, –7B27/B1, –7B27/B3, –7B27A, –7B27A/3, –7B27AE, –7B27E, –7B27E/B1, –7B27E/B1F, –7B27E/B3, and –7B27E/F model turbofan engines with a high-pressure turbine (HPT) inner stationary seal, part number (P/N) 1808M56G01 installed that has a serial number (S/N) listed in Planning Information, Paragraph 1.A., Table 1, of CFM Service Bulletin (SB) CFM56–5B S/B 72–0952, dated April 23, 2019, or in Planning Information, Paragraph 1.A., Table 1, CFM SB CFM56–7B S/B 72– 1054, dated April 23, 2019, installed. (2) This AD does not apply to affected CFM CFM56–5B and CFM56–7B model turbofan engines with the affected HPT inner stationary seal installed if the seal has been repaired as specified in CFM56–5B Engine Shop Manual (ESM), 72–41–03, REPAIR 003, or CFM56–7B ESM, 72–41–03, REPAIR 003, after the year listed in Paragraph 1.A., Table 1, of CFM SB CFM56–5B S/B 72–0952 dated April 23, 2019, or Paragraph 1.A., Table 1, CFM SB CFM56–7B S/B 72–1054, dated April 23, 2019. (d) Subject Joint Aircraft System Component (JASC) Code 7230, Turbine Engine Compressor Section. (e) Unsafe Condition This AD was prompted by cracks found in the rotating air HPT front seal. The FAA is issuing this AD to prevent failure of the HPT inner stationary seal and the rotating air HPT front seal. The unsafe condition, if not addressed, could result in uncontained release of the rotating air HPT front seal, damage to the engine, and damage to the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions (1) At the next engine shop visit after the effective date of this AD, remove the affected HPT inner stationary seal from service and replace with a HPT inner stationary seal (that is not listed in Planning Information, Paragraph 1.A., Table 1, of CFM SB CFM56– 5B S/B 72–0952, dated April 23, 2019, or in Planning Information, Paragraph 1.A., Table 1, CFM SB CFM56–7B S/B 72–1054, dated April 23, 2019) or a repaired HPT inner stationary seal that is eligible for installation per the definition in paragraph (h)(2) of this AD. (2) After removing the affected HPT inner stationary seal required by paragraph (g)(1), inspect the removed HPT inner stationary seal for honeycomb separation, as defined in the Accomplishment Instructions, paragraph 3.C.(1), in CFM SB CFM56–5B S/B 72–0952, dated April 23, 2019, or in CFM SB CFM56– 7B S/B 72–1054, dated April 23, 2019. (3) If honeycomb separation is found during the inspection required by paragraph (g)(2) of this AD, before further flight: PO 00000 Frm 00007 Fmt 4702 Sfmt 4702 49489 (i) Remove the rotating air HPT front seal from service and replace with a part eligible for installation. (ii) Inspect the HPT rotor blade internal cavities for honeycomb metal debris per the Accomplishment Instructions, paragraph 3.C.(1)(a)(4), of CFM SB CFM56–5B S/B 72– 0952, dated April 23, 2019, or CFM SB CFM56–7B S/B 72–1054, dated April 23, 2019. If honeycomb metal debris is found, remove the HPT rotor blade from service and replace with a part eligible for installation. (iii) Remove the No. 3 ball bearing from service and replace with a part eligible for installation. (h) Definition (1) For the purpose of this AD, an ‘‘engine shop visit’’ is the induction of an engine into the shop for maintenance involving the separation of pairs of major mating engine case flanges, except that the separation of engine flanges solely for the purposes of transportation without subsequent maintenance does not constitute an engine shop visit. (2) For the purpose of this AD, a repaired HPT inner stationary seal that is eligible for installation is any HPT inner stationary seal, P/N 1808M56G01 and with a S/N listed in Paragraph 1.A., Table 1, of CFM SB CFM56– 5B S/B 72–0952, dated April 23, 2019, or Paragraph 1.A., Table 1, CFM SB CFM56–7B S/B 72–1054, dated April 23, 2019 that has been repaired per CFM56–5B ESM, 72–41– 03, REPAIR 003, or CFM56–7B ESM, 72–41– 03, REPAIR 003, after the year listed in Paragraph 1.A., Table 1, of CFM SB CFM56– 5B S/B 72–0952, dated April 23, 2019, or Paragraph 1.A., Table 1, CFM SB CFM56–7B S/B 72–1054, dated April 23, 2019. (i) No Reporting Requirement The reporting requirements contained within the SBs referenced in paragraph (g) of this AD are not required by this AD. (j) Alternative Methods of Compliance (AMOCs) (1) The Manager, ECO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (k)(1) of this AD. You may email your request to: ANE-AD-AMOC@ faa.gov. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/ certificate holding district office. (k) Related Information (1) For more information about this AD, contact Christopher McGuire, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781– 238–7120; fax: 781–238–7199; email: chris.mcguire@faa.gov. (2) For service information identified in this AD, contact CFM International Inc., Aviation Operations Center, 1 Neumann E:\FR\FM\20SEP1.SGM 20SEP1 49490 Federal Register / Vol. 84, No. 183 / Friday, September 20, 2019 / Proposed Rules Way, M/D Room 285, Cincinnati, OH 45125; phone: 877–432–3272; fax: 877–432–3329; email: aviation.fleetsupport@ge.com. You may view this referenced service information at the FAA, Engine & Propeller Standards Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781–238–7759. Issued in Burlington, Massachusetts, on September 11, 2019. Robert J. Ganley, Manager, Engine and Propeller Standards Branch, Aircraft Certification Service. [FR Doc. 2019–20054 Filed 9–19–19; 8:45 am] BILLING CODE 4910–13–P COMMODITY FUTURES TRADING COMMISSION 17 CFR Part 13 RIN Number 3038–AE90 Public Rulemaking Procedures Commodity Futures Trading Commission. ACTION: Notice of proposed rulemaking. AGENCY: The Commodity Futures Trading Commission (the ‘‘Commission’’) is proposing to amend part 13 of its regulations to eliminate the provisions that set forth the procedure for the formulation, amendment, or repeal of rules or regulations. Because the Administrative Procedure Act (‘‘APA’’) governs the Commission’s rulemaking process, the Commission believes that it is unnecessary to codify the rulemaking process in a Commission regulation. Part 13, as amended, will be comprised solely of the procedure for filing petitions for rulemakings as the APA does not address this process. DATES: Comments must be received on or before October 21, 2019. ADDRESSES: You may submit comments, identified by RIN number 3038–AE90, by any of the following methods: • Agency Website: https:// comments.cftc.gov; • Mail: Secretary of the Commission, Commodity Futures Trading Commission, Three Lafayette Centre, 1155 21st Street NW, Washington, DC 20581; • Hand Delivery/Courier: Same as Mail, above. • Federal eRulemaking Portal: https:// www.regulations.gov. Follow instructions for submitting comments. All comments must be submitted in English, or if not, accompanied by an English translation. Comments will be posted as received to https:// www.cftc.gov. You should submit only information that you wish to make khammond on DSKJM1Z7X2PROD with PROPOSALS SUMMARY: VerDate Sep<11>2014 16:49 Sep 19, 2019 Jkt 247001 available publicly. If you wish the Commission to consider information that may be exempt from disclosure under the Freedom of Information Act, a petition for confidential treatment of the exempt information may be submitted according to the procedures established in CFTC regulations at 17 CFR part 145. The Commission reserves the right, but shall have no obligation, to review, pre-screen, filter, redact, refuse or remove any or all of your submission from https://www.cftc.gov that it may deem to be inappropriate for publication, such as obscene language. All submissions that have been redacted or removed that contain comments on the merits of the rulemaking will be retained in the public comment file and will be considered as required under the Administrative Procedure Act and other applicable laws, and may be accessible under the Freedom of Information Act. FOR FURTHER INFORMATION CONTACT: Herminio Castro, Senior Special Counsel, (202) 418–6705, hcastro@ cftc.gov; Dhaval Patel, Counsel, (202) 418–5125, dpatel@cftc.gov; Office of the General Counsel, Commodity Futures Trading Commission, 1155 21st Street NW, Washington, DC 20581. SUPPLEMENTARY INFORMATION: I. Discussion Part 13 sets forth procedures for the formulation, amendment, or repeal of rules or regulations insofar as those procedures directly affect the public.1 The Commission promulgated part 13 pursuant to former section 4a(j) of the Commodity Exchange Act (‘‘CEA’’),2 which is currently section 2(a)(12) of the CEA.3 Section 2(a)(12) states that the Commission is authorized to promulgate such rules and regulations as it deems necessary to govern the operating procedures and conduct of business of the Commission. This section authorizes, but does not require, the Commission to promulgate regulations governing its rulemaking process. The Commission first adopted part 13 in 1976 and has not revised part 13 since. The Commission would eliminate the provisions in part 13 that set forth the process for rulemakings.4 As originally adopted, part 13 was intended to track the APA rulemaking process. However, in its current form, part 13 does not fully conform to the APA, which may 1 17 CFR part 13. 41 FR 17536 (Apr. 27, 1976); Public Law 93–463, Sec. 101(a)(11), 88 Stat. 1391, 7 U.S.C. 4a(j). 3 7 U.S.C. 2(a)(12). 4 The provisions being eliminated are 17 CFR 13.1, 13.3, 13.4, 13.5, and 13.6. 17 CFR 13.2 is being retained and renumbered as 17 CFR 13.1. 2 See PO 00000 Frm 00008 Fmt 4702 Sfmt 4702 create ambiguity and confusion about the procedures to be followed by the Commission in rulemakings.5 To be clear, the APA governs Commission rulemakings. Specifically, section 553 of the APA provides for the procedures to be followed by the Commission when promulgating formal and informal rulemakings.6 Because the APA governs the Commission’s rulemaking process, the Commission believes that it is unnecessary to codify the rulemaking process in a Commission regulation that would be duplicative of the APA. The Commission would retain regulation 13.2, which is supplemental to the APA. Regulation 13.2 describes the procedures by which anyone who wishes the Commission to consider the issuance, amendment, or repeal of a rule may petition the Commission. Specifically, regulation 13.2 provides instructions as to where the petition should be sent, what information should be included in the petition, and prescribes the manner in which the Commission must respond to such petition. The Commission believes that retaining this provision is necessary as the APA does not address this process. Furthermore, a formalized process for petitions would promote consistency and transparency in the way that the Commission handles petitions for rulemakings. Accordingly, this proposed rulemaking would remove regulations 13.1, 13.3, 13.4, 13.5, and 13.6 from part 13 and retain and renumber regulation 13.2 as regulation 13.1. In addition, the Commission would revise the authority citation for part 13. The current authority cited for part 13, 7 U.S.C. 4a(j), is incorrect due to subsequent renumbering and is being changed to 7 U.S.C. 2(a)(12). II. Related Matters A. Regulatory Flexibility Act The Regulatory Flexibility Act 7 requires federal agencies to consider whether the rules they propose will have a significant economic impact on a substantial number of small entities and, if so, to provide a regulatory flexibility analysis regarding the economic impact on those entities. This rule would remove unnecessary and potentially confusing provisions of part 13 and update the authority cited. As 5 For example, section 13.4(b) allows formal rulemakings to be conducted through oral presentation or written submissions; in contrast, APA sections 556 and 557 require a trial-like process to be followed for formal rulemakings. 6 See 5 U.S.C. 551 et seq.; Attorney General’s Manual on the Administrative Procedure Act 9 (1947). 7 5 U.S.C. 601 et seq. E:\FR\FM\20SEP1.SGM 20SEP1

Agencies

[Federal Register Volume 84, Number 183 (Friday, September 20, 2019)]
[Proposed Rules]
[Pages 49487-49490]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2019-20054]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2019-0568; Product Identifier 2019-NE-20-AD]
RIN 2120-AA64


Airworthiness Directives; CFM International S.A. Turbofan Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) 
for all CFM International, S.A. (CFM) CFM56-5B and CFM56-7B model 
turbofan engines with a certain high-pressure turbine (HPT) inner 
stationary seal installed. This proposed AD was prompted by cracks 
found in the rotating air HPT front seal. This proposed AD would 
require removal, inspection, and replacement of the affected HPT inner 
stationary seal, and depending on the findings, removal and replacement 
of the rotating air HPT front seal. The FAA is proposing this AD to 
address the unsafe condition on these products.

DATES: The FAA must receive comments on this proposed AD by November 4, 
2019.

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 https://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 NPRM, 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 and Propeller Standards Branch, 1200 
District Avenue, Burlington, MA 01803. For information on the 
availability of this material at the FAA, call 781-238-7759.

Examining the AD Docket

    You may examine the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2019-
0568; or in person at Docket Operations between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays. The AD docket contains 
this NPRM, the regulatory evaluation, any comments received, and other 
information. The street address for Docket Operations is listed above. 
Comments will be available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Christopher McGuire, Aerospace 
Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; 
phone: 781-238-7120; fax: 781-238-7199; email: [email protected].

SUPPLEMENTARY INFORMATION:

[[Page 49488]]

Comments Invited

    The FAA invites 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-2019-0568; 
Product Identifier 2019-NE-20-AD'' at the beginning of your comments. 
The FAA specifically invites comments on the overall regulatory, 
economic, environmental, and energy aspects of this NPRM. The FAA will 
consider all comments received by the closing date and may amend this 
NPRM because of those comments.
    The FAA will post all comments received, without change, to https://www.regulations.gov, including any personal information you provide. 
The FAA will also post a report summarizing each substantive verbal 
contact received about this NPRM.

Discussion

    The FAA received a report that two cracks were discovered on a CFM 
CFM56-5B model turbofan engine rotating air HPT front seal during a 
routine engine shop visit. After investigation, CFM determined that the 
HPT inner stationary seal, part number 1808M56G01, may not have 
received the correct braze heat treat cycle at the time of the 
honeycomb replacement. As a result, the affected HPT inner stationary 
seal could lead to a localized separation of the replaced honeycomb, 
which may affect the life of the rotating air HPT front seal. This 
condition, if not addressed, could result in an uncontained release of 
the rotating air HPT front seal, damage to the engine, and damage to 
the airplane.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed CFM Service Bulletin (SB) CFM56-5B S/B 72-0952, 
dated April 23, 2019, and CFM SB CFM56-7B S/B 72-1054, dated April 23, 
2019. CFM SB CFM56-5B S/B 72-0952, dated April 23, 2019, describes 
procedures for repairing the CFM56-5B turbofan engine HPT inner 
stationary seal honeycomb. CFM SB CFM56-7B S/B 72-1054, dated April 23, 
2019, describes procedures for repairing the CFM56-7B turbofan engine 
HPT inner stationary seal honeycomb. This service information is 
reasonably available because the interested parties have access to it 
through their normal course of business or by the means identified in 
the ADDRESSES section.

FAA's Determination

    The FAA is proposing this AD because it 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 removal, inspection, and replacement 
of the affected HPT inner stationary seal and, depending on the 
findings, removal and replacement of the rotating air HPT front seal 
with a part eligible for installation.

Costs of Compliance

    The FAA estimates that this proposed AD affects 210 engines 
installed on airplanes of U.S. registry. Operators have the option to 
replace or repair the affected HPT inner stationary seal. The part cost 
is for replacement with a repaired HPT inner stationary seal.
    The FAA estimates the following costs to comply with this proposed 
AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Replace HPT inner stationary seal.....  1 work-hour x $85 per             $7,910          $7,995      $1,678,950
                                         hour = $85.
Inspect HPT inner stationary seal.....  1 work-hour x $85 per                  0              85          17,850
                                         hour = $85.
----------------------------------------------------------------------------------------------------------------

    The FAA estimates the following costs to do any necessary 
replacements that would be required based on the results of the 
proposed inspection. The FAA has no way of determining the number of 
engines that might need these replacements:

                                               On-Condition Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                     Cost per
                    Action                                 Labor cost               Parts cost        product
----------------------------------------------------------------------------------------------------------------
Replace rotating air HPT front seal...........  1 work-hour x $85 per hour = $85        $344,600        $344,685
Inspect HPT rotor blade internal cavities.....  1 work-hour x $85 per hour = $85               0              85
Replace HPT rotor blade (pair)................  1 work-hour x $85 per hour = $85          31,000          31,085
Replace No. 3 ball bearing....................  1 work-hour x $85 per hour = $85          30,000          30,085
----------------------------------------------------------------------------------------------------------------

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.
    The FAA is 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.
    This AD is issued in accordance with authority delegated by the 
Executive Director, Aircraft Certification Service, as authorized by 
FAA Order 8000.51C. In accordance with that order, issuance of ADs is 
normally a function of the Compliance and Airworthiness Division, but 
during this transition period, the Executive Director has delegated the 
authority to issue ADs applicable to engines, propellers, and 
associated appliances to the Manager, Engine and Propeller Standards 
Branch, Policy and Innovation Division.

[[Page 49489]]

Regulatory Findings

    The FAA 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) Will not affect intrastate aviation in Alaska, and
    (3) 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-2019-0568; Product 
Identifier 2019-NE-20-AD.

(a) Comments Due Date

    The FAA must receive comments by November 4, 2019.

(b) Affected ADs

    None.

(c) Applicability

    (1) This AD applies to all CFM International, S.A. (CFM) CFM56-
5B1, -5B1/2P, -5B1/3, -5B1/P, -5B2, -5B2/2P, -5B2/3, -5B2/P, -5B3/
2P, -5B3/2P1, -5B3/3, -5B3/3B1, -5B3/P, -5B3/P1, -5B4, -5B4/2P, -
5B4/2P1, -5B4/3, -5B4/3B1, -5B4/P, -5B4/P1, -5B5, -5B5/3, -5B5/P, -
5B6, -5B6/2P, -5B6/3, -5B6/P, -5B7, -5B7/3, -5B7/P, -5B8/3, -5B8/P, 
-5B9/2P, -5B9/3, -5B9/P, CFM56-7B20, -7B20/2, -7B20/3, -7B20E, -
7B22, -7B22/2, -7B22/3, -7B22/3B1, -7B22/B1, -7B22E, -7B22E/B1, -
7B24, -7B24/2, -7B24/3, -7B24/3B1, -7B24/B1, -7B24E, -7B24E/B1, -
7B26, -7B26/2, -7B26/3, -7B26/3B1, -7B26/3B2, -7B26/3B2F, -7B26/3F, 
-7B26/B1, -7B26/B2, -7B26E, -7B26E/B1, -7B26E/B2, -7B26E/B2F, -
7B26E/F, -7B27, -7B27/2, -7B27/3, -7B27/3B1, -7B27/3B1F, -7B27/3B3, 
-7B27/3F, -7B27/B1, -7B27/B3, -7B27A, -7B27A/3, -7B27AE, -7B27E, -
7B27E/B1, -7B27E/B1F, -7B27E/B3, and -7B27E/F model turbofan engines 
with a high-pressure turbine (HPT) inner stationary seal, part 
number (P/N) 1808M56G01 installed that has a serial number (S/N) 
listed in Planning Information, Paragraph 1.A., Table 1, of CFM 
Service Bulletin (SB) CFM56-5B S/B 72-0952, dated April 23, 2019, or 
in Planning Information, Paragraph 1.A., Table 1, CFM SB CFM56-7B S/
B 72-1054, dated April 23, 2019, installed.
    (2) This AD does not apply to affected CFM CFM56-5B and CFM56-7B 
model turbofan engines with the affected HPT inner stationary seal 
installed if the seal has been repaired as specified in CFM56-5B 
Engine Shop Manual (ESM), 72-41-03, REPAIR 003, or CFM56-7B ESM, 72-
41-03, REPAIR 003, after the year listed in Paragraph 1.A., Table 1, 
of CFM SB CFM56-5B S/B 72-0952 dated April 23, 2019, or Paragraph 
1.A., Table 1, CFM SB CFM56-7B S/B 72-1054, dated April 23, 2019.

(d) Subject

    Joint Aircraft System Component (JASC) Code 7230, Turbine Engine 
Compressor Section.

(e) Unsafe Condition

    This AD was prompted by cracks found in the rotating air HPT 
front seal. The FAA is issuing this AD to prevent failure of the HPT 
inner stationary seal and the rotating air HPT front seal. The 
unsafe condition, if not addressed, could result in uncontained 
release of the rotating air HPT front seal, damage to the engine, 
and damage to the airplane.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Required Actions

    (1) At the next engine shop visit after the effective date of 
this AD, remove the affected HPT inner stationary seal from service 
and replace with a HPT inner stationary seal (that is not listed in 
Planning Information, Paragraph 1.A., Table 1, of CFM SB CFM56-5B S/
B 72-0952, dated April 23, 2019, or in Planning Information, 
Paragraph 1.A., Table 1, CFM SB CFM56-7B S/B 72-1054, dated April 
23, 2019) or a repaired HPT inner stationary seal that is eligible 
for installation per the definition in paragraph (h)(2) of this AD.
    (2) After removing the affected HPT inner stationary seal 
required by paragraph (g)(1), inspect the removed HPT inner 
stationary seal for honeycomb separation, as defined in the 
Accomplishment Instructions, paragraph 3.C.(1), in CFM SB CFM56-5B 
S/B 72-0952, dated April 23, 2019, or in CFM SB CFM56-7B S/B 72-
1054, dated April 23, 2019.
    (3) If honeycomb separation is found during the inspection 
required by paragraph (g)(2) of this AD, before further flight:
    (i) Remove the rotating air HPT front seal from service and 
replace with a part eligible for installation.
    (ii) Inspect the HPT rotor blade internal cavities for honeycomb 
metal debris per the Accomplishment Instructions, paragraph 
3.C.(1)(a)(4), of CFM SB CFM56-5B S/B 72-0952, dated April 23, 2019, 
or CFM SB CFM56-7B S/B 72-1054, dated April 23, 2019. If honeycomb 
metal debris is found, remove the HPT rotor blade from service and 
replace with a part eligible for installation.
    (iii) Remove the No. 3 ball bearing from service and replace 
with a part eligible for installation.

(h) Definition

    (1) For the purpose of this AD, an ``engine shop visit'' is the 
induction of an engine into the shop for maintenance involving the 
separation of pairs of major mating engine case flanges, except that 
the separation of engine flanges solely for the purposes of 
transportation without subsequent maintenance does not constitute an 
engine shop visit.
    (2) For the purpose of this AD, a repaired HPT inner stationary 
seal that is eligible for installation is any HPT inner stationary 
seal, P/N 1808M56G01 and with a S/N listed in Paragraph 1.A., Table 
1, of CFM SB CFM56-5B S/B 72-0952, dated April 23, 2019, or 
Paragraph 1.A., Table 1, CFM SB CFM56-7B S/B 72-1054, dated April 
23, 2019 that has been repaired per CFM56-5B ESM, 72-41-03, REPAIR 
003, or CFM56-7B ESM, 72-41-03, REPAIR 003, after the year listed in 
Paragraph 1.A., Table 1, of CFM SB CFM56-5B S/B 72-0952, dated April 
23, 2019, or Paragraph 1.A., Table 1, CFM SB CFM56-7B S/B 72-1054, 
dated April 23, 2019.

(i) No Reporting Requirement

    The reporting requirements contained within the SBs referenced 
in paragraph (g) of this AD are not required by this AD.

(j) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, ECO Branch, FAA, has the authority to approve 
AMOCs for this AD, if requested using the procedures found in 14 CFR 
39.19. In accordance with 14 CFR 39.19, send your request to your 
principal inspector or local Flight Standards District Office, as 
appropriate. If sending information directly to the manager of the 
certification office, send it to the attention of the person 
identified in paragraph (k)(1) of this AD. You may email your 
request to: [email protected].
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office.

(k) Related Information

    (1) For more information about this AD, contact Christopher 
McGuire, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, 
Burlington, MA 01803; phone: 781-238-7120; fax: 781-238-7199; email: 
[email protected].
    (2) For service information identified in this AD, contact CFM 
International Inc., Aviation Operations Center, 1 Neumann

[[Page 49490]]

Way, M/D Room 285, Cincinnati, OH 45125; phone: 877-432-3272; fax: 
877-432-3329; email: [email protected]. You may view this 
referenced service information at the FAA, Engine & Propeller 
Standards Branch, 1200 District Avenue, Burlington, MA 01803. For 
information on the availability of this material at the FAA, call 
781-238-7759.

    Issued in Burlington, Massachusetts, on September 11, 2019.
Robert J. Ganley,
Manager, Engine and Propeller Standards Branch, Aircraft Certification 
Service.
[FR Doc. 2019-20054 Filed 9-19-19; 8:45 am]
 BILLING CODE 4910-13-P

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