83 FR 18751 - Airworthiness Directives; Rolls-Royce Corporation Engines
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 83, Issue 83 (April 30, 2018)
Federal Aviation Administration
Federal Register Volume 83, Issue 83 (April 30, 2018)
| Page Range | 18751-18753 | |
| FR Document | 2018-09012 |
[Federal Register Volume 83, Number 83 (Monday, April 30, 2018)] [Proposed Rules] [Pages 18751-18753] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2018-09012] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2018-0259; Product Identifier 2018-NE-09-AD] RIN 2120-AA64 Airworthiness Directives; Rolls-Royce Corporation Engines AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). ----------------------------------------------------------------------- SUMMARY: We propose to adopt a new airworthiness directive (AD) for Rolls-Royce Corporation (RRC) AE 2100D2A and AE 2100D3 model turboprop engines and AE 3007A2 model turbofan engines. This proposed AD was prompted by the possibility of a low-cycle fatigue failure on certain turbine wheels. This proposed AD would require removing the affected turbine wheels at the next engine shop visit or before reaching the new reduced life limit, whichever occurs first, and replacing them with parts eligible for installation. We are proposing this AD to address the unsafe condition on these products. DATES: We must receive comments on this proposed AD by June 14, 2018. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods: [[Page 18752]]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 NPRM, contact Rolls- Royce Corporation, 450 South Meridian Street, Indianapolis, IN 46225; phone: 317-230-3774. 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 http://www.regulations.gov by searching for and locating Docket No. FAA-2018- 0259; 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 (phone: 800-647- 5527) is listed above. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Kyri Zaroyiannis, Aerospace Engineer, Chicago ACO Branch, FAA, 2300 E Devon Ave., Des Plaines, IL 60018; phone: 847-294-7836; fax: 847-294-7834; 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-2018-0259; Product Identifier 2018-NE-09-AD'' at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this NPRM. We will consider all comments received by the closing date and may amend this NPRM 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 NPRM. Discussion We were prompted to issue this NPRM based upon a report of the discovery of steel inclusion in the production process at an RRC forging supplier. Ultrasonic inspection at the forging supplier revealed steel impurities could be introduced into turbine wheels during forging. Analysis and testing by RRC of these wheels indicated that, because of imperfections, these turbine wheels could not be operated safely up to their published life limits. The affected turbine wheels include 1st-stage gas generator turbine wheels, installed on AE 2100D2A and AE 2100D3 model turboprop engines, and 1st-stage high- pressure turbine (HPT) wheels, installed on AE 3007A2 turbofan engines. This condition, if not addressed, could result in uncontained turbine wheel release, damage to the engine, and damage to the airplane. Related Service Information Under 1 CFR Part 51 We reviewed RRC Alert Service Bulletin (ASB) AE 2100D2-A-72-090, Revision 1, dated July 11, 2014, and RRC ASB AE 2100D3-A-72-286, Revision 1, dated July 11, 2014 (one document, referred to herein as ``RRC ASB AE 2100D2-A-72-090/AE 2100D3-A-72-286''), and RRC ASB AE 3007A-A-72-419, Revision 2, dated December 4, 2017. RRC ASB AE 2100D2- A-72-090/AE 2100D3-A-72-286 provides removal and replacement instructions and a new life limit for the affected 1st-stage gas generator turbine wheels installed on RRC AE 2100D2A and AE 2100D3 model turboprop engines. ASB AE 3007A-A-72-419 provides removal and replacement instructions and a new life limit for 1st-stage HPT wheels installed on RRC AE 3007A2 model turbofan engines. 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 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 requires the removal and replacement of the affected turbine wheels at the next engine shop visit or before reaching their new life limit, whichever occurs first. Costs of Compliance We estimate that this proposed AD affects nine engines installed on airplanes of U.S. registry. We estimate 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 turbine wheels................ 0 work-hours x $85 per $160,829 $160,829 $1,447,461 hour = $0. ---------------------------------------------------------------------------------------------------------------- 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. [[Page 18753]] 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, 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): Roll-Royce Corporation (Type Certificate previously held by Allison Engine Company): Docket No. FAA-2018-0259; Product Identifier 2018- NE-09-AD. (a) Comments Due Date We must receive comments by June 14, 2018. (b) Affected ADs None. (c) Applicability This AD applies to: (1) Rolls-Royce Corporation (RRC) AE 2100D2A turboprop engines with 1st-stage gas generator turbine wheels, part number (P/N) 23089692, with serial numbers (S/Ns) MW65898 or MW68310, installed. (2) RRC AE 2100D3 turboprop engines with 1st-stage gas generator turbine wheels, P/N 23088906, with S/Ns MW65895, MW65896, MW65900, MW65901, MW65903, MW68305, MW68306, MW68307, MW68312, MW68314, MW68316, MW68318, or MW68319 installed. (3) RRC AE 3007A2 turbofan engines with 1st-stage high-pressure turbine (HPT) wheels, P/N 23088906, with S/Ns MW65894, MW68303, or MW68315 installed. (d) Subject Joint Aircraft System Component (JASC) Code 7250, Turbine section. (e) Unsafe Condition This AD was prompted by the possibility of steel inclusions in the turbine wheel forging. We are proposing this AD to prevent a low-cycle fatigue failure of a 1st-stage gas generator turbine wheel or 1st-stage HPT wheel. The unsafe condition, if not addressed, could result in uncontained turbine wheel release, 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) Remove the affected 1st-stage gas generator turbine wheel and replace with a part eligible for installation at the next engine shop visit or before exceeding the life limit of 4,800 engine cycles, whichever occurs first, in accordance with the Accomplishment Instructions, Paragraph 2, of RRC Alert Service Bulletin (ASB) AE 2100D2-A-72-090, Revision 1, dated July 11, 2014, and RRC ASB AE 2100D3-A-72-286, Revision 1, dated July 11, 2014 (one document). (2) Remove the affected 1st-stage HPT wheel and replace with a part eligible for installation at the next engine shop visit or before exceeding the life limit of 5,600 engine cycles, whichever occurs first, in accordance with the Accomplishment Instructions, Paragraph 2, of RRC ASB AE 3007A-A-72-419, Revision 2, dated December 4, 2017. (h) Definition 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 flanges, except that the separation of engine flanges solely for the purposes of transportation without subsequent engine maintenance is not an engine shop visit. (i) Alternative Methods of Compliance (AMOCs) (1) The Manager, Chicago 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 the attention of the person identified in paragraph (j)(1) of this AD. (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. (j) Related Information (1) For more information about this AD, contact Kyri Zaroyiannis, Aerospace Engineer, Chicago ACO Branch, FAA, 2300 E. Devon Ave., Des Plaines, IL 60018; phone: 847-294-7836; fax: 847- 294-7834; email: [email protected]. (2) For service information identified in this AD, contact Rolls-Royce Corporation, 450 South Meridian Street, Indianapolis, IN 46225; phone: 317-230-3774. You may view this service information at the FAA, Engine and Propeller Standards Branch, 1200 District Avenue, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7759. Issued in Burlington, MA, on April 25, 2018. Robert J. Ganley, Manager, Engine and Propeller Standards Branch, Aircraft Certification Service. [FR Doc. 2018-09012 Filed 4-27-18; 8:45 am] BILLING CODE 4910-13-P
![Federal Register / Vol. 83, No. 83 / Monday, April 30, 2018 / Proposed Rules 18751
December 21, 2010) (‘‘AD 2010–26–05’’) and (ii) Within 30 days after April 7, 2014 (the by searching for and locating Docket No.
AD 2014–03–12, Amendment 39–17749 (79 effective date of AD 2014–03–12). FAA–2018–0306.
FR 11693, March 3, 2014) (‘‘AD 2014–03– (2) For Task 52–20–00–610–801–01 (2) For more information about this AD,
12’’). identified in the service information contact Tom Rodriguez, Aerospace Engineer,
specified in the introductory text of International Section, Transport Standards
(c) Applicability paragraph (g) of this AD, the initial Branch, FAA, 2200 South 216th St., Des
This AD applies to all Dassault Aviation compliance time is within 24 months after Moines, WA 98198; telephone and fax 206–
Model FALCON 2000 airplanes, certificated April 7, 2014 (the effective date of AD 2014– 231–3226.
in any category, all serial numbers. 03–12). (3) For service information identified in
(3) The limited service life of part number this AD, contact Dassault Falcon Jet
(d) Subject F2MA721512100 is 3,750 total flight cycles Corporation, Teterboro Airport, P.O. Box
Air Transport Association (ATA) of on the part or 6 years since the 2000, South Hackensack, NJ 07606;
America Code 05, Time limits/maintenance manufacturing date of the part, whichever telephone 201–440–6700; internet http://
checks. occurs first. www.dassaultfalcon.com. You may view this
(h) No Alternative Actions or Intervals service information at the FAA, Transport
(e) Reason
Standards Branch, 2200 South 216th St., Des
This AD was prompted by manufacturer After the maintenance or inspection Moines, WA. For information on the
revisions to the airplane maintenance manual program has been revised as required by availability of this material at the FAA, call
(AMM) that introduce new or more paragraph (g) of this AD, no alternative 206–231–3195.
restrictive maintenance requirements and actions (e.g., inspections), or intervals, may
be used unless the actions, or intervals, are Issued in Des Moines, Washington, on
airworthiness limitations. We are issuing this
approved as an alternative method of April 19, 2018.
AD to prevent reduced controllability of the
airplane. compliance (AMOC) in accordance with the Michael Kaszycki,
procedures specified in paragraph (j)(1) of Acting Director, System Oversight Division,
(f) Compliance this AD. Aircraft Certification Service.
Comply with this AD within the (i) Terminating Actions for Other ADs [FR Doc. 2018–08757 Filed 4–27–18; 8:45 am]
compliance times specified, unless already
done. (1) Accomplishing the actions required by BILLING CODE 4910–13–P
this AD terminates all of the requirements of
(g) Revision of Maintenance or Inspection AD 2014–03–12.
Program (2) Accomplishment of the actions required DEPARTMENT OF TRANSPORTATION
Within 90 days after the effective date of by paragraph (g) of this AD terminates the
this AD, revise the maintenance or inspection requirements of paragraph (g) of AD 2010– Federal Aviation Administration
program, as applicable, to incorporate the 26–05 for all Dassault Aviation Model
information specified in Chapter 5–40, FALCON 2000 airplanes. 14 CFR Part 39
Airworthiness Limitations, Revision 19, (j) Other FAA AD Provisions
dated November 2017, of Chapter 5, [Docket No. FAA–2018–0259; Product
The following provisions also apply to this
Maintenance Planning Document, of the Identifier 2018–NE–09–AD]
AD:
Dassault Falcon 2000 Maintenance Manual.
(1) Alternative Methods of Compliance
The initial compliance times for doing the
(AMOCs): The Manager, International RIN 2120–AA64
tasks are at the time specified in Chapter 5–
Section, Transport Standards Branch, FAA,
40, Airworthiness Limitations, Revision 19, has the authority to approve AMOCs for this
dated November 2017, of Chapter 5, Airworthiness Directives; Rolls-Royce
AD, if requested using the procedures found Corporation Engines
Maintenance Planning Document, of the in 14 CFR 39.19. In accordance with 14 CFR
Dassault Falcon 2000 Maintenance Manual, 39.19, send your request to your principal
or within 90 days after the effective date of AGENCY: Federal Aviation
inspector or local Flight Standards District Administration (FAA), DOT.
this AD, whichever occurs later; except as Office, as appropriate. If sending information
required by paragraphs (g)(1) through (g)(3) of directly to the International Section, send it ACTION: Notice of proposed rulemaking
this AD. The term ‘‘LDG’’ in the ‘‘First to the attention of the person identified in (NPRM).
Inspection’’ column of any table in Chapter paragraph (k)(2) of this AD. Information may
5–40, Airworthiness Limitations, Revision be emailed to: 9-ANM-116-AMOC- SUMMARY: We propose to adopt a new
19, dated November 2017, means total REQUESTS@faa.gov. Before using any airworthiness directive (AD) for Rolls-
airplane landings. The term ‘‘FH’’ in the approved AMOC, notify your appropriate Royce Corporation (RRC) AE 2100D2A
‘‘First Inspection’’ column of any table in principal inspector, or lacking a principal and AE 2100D3 model turboprop
Chapter 5–40, Airworthiness Limitations, inspector, the manager of the local flight
Revision 19, dated November 2017, means engines and AE 3007A2 model turbofan
standards district office/certificate holding engines. This proposed AD was
total flight hours. The term ‘‘FC’’ in the ‘‘First district office.
Inspection’’ column of any table in Chapter (2) Contacting the Manufacturer: For any
prompted by the possibility of a low-
5–40, Airworthiness Limitations, Revision requirement in this AD to obtain corrective cycle fatigue failure on certain turbine
19, dated November 2017, means total flight actions from a manufacturer, the action must wheels. This proposed AD would
cycles. be accomplished using a method approved require removing the affected turbine
(1) For Task 30–11–09–350–801 identified by the Manager, International Section, wheels at the next engine shop visit or
in the service information specified in the Transport Standards Branch, FAA; or the before reaching the new reduced life
introductory text of paragraph (g) of this AD, European Aviation Safety Agency (EASA); or limit, whichever occurs first, and
the initial compliance time is the later of the Dassault Aviation’s EASA Design
times specified in paragraphs (g)(1)(i) and replacing them with parts eligible for
Organization Approval (DOA). If approved by
(g)(1)(ii) of this AD. the DOA, the approval must include the
installation. We are proposing this AD
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(i) At the earlier of the times specified in DOA-authorized signature. to address the unsafe condition on these
paragraphs (g)(1)(i)(A) and (g)(1)(i)(B) of this products.
AD. (k) Related Information
DATES: We must receive comments on
(A) Prior to the accumulation of 2,400 total (1) Refer to Mandatory Continuing this proposed AD by June 14, 2018.
flight hours or 2,000 total flight cycles, Airworthiness Information (MCAI) EASA
whichever occurs first. Airworthiness Directive 2017–0236, dated ADDRESSES: You may send comments,
(B) Within 2,400 flight hours or 2,000 flight November 30, 2017, for related information. using the procedures found in 14 CFR
cycles after April 7, 2014 (the effective date This MCAI may be found in the AD docket 11.43 and 11.45, by any of the following
of AD 2014–03–12), whichever occurs first. on the internet at http://www.regulations.gov methods:
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Regulatory Findings MW65900, MW65901, MW65903, MW68305, of the local flight standards district office/
MW68306, MW68307, MW68312, MW68314, certificate holding district office.
We determined that this proposed AD MW68316, MW68318, or MW68319
would not have federalism implications installed. (j) Related Information
under Executive Order 13132. This (3) RRC AE 3007A2 turbofan engines with (1) For more information about this AD,
proposed AD would not have a 1st-stage high-pressure turbine (HPT) wheels, contact Kyri Zaroyiannis, Aerospace
substantial direct effect on the States, on P/N 23088906, with S/Ns MW65894, Engineer, Chicago ACO Branch, FAA, 2300 E.
the relationship between the national MW68303, or MW68315 installed. Devon Ave., Des Plaines, IL 60018; phone:
government and the States, or on the 847–294–7836; fax: 847–294–7834; email:
(d) Subject kyri.zaroyiannis@faa.gov.
distribution of power and Joint Aircraft System Component (JASC) (2) For service information identified in
responsibilities among the various Code 7250, Turbine section. this AD, contact Rolls-Royce Corporation,
levels of government. 450 South Meridian Street, Indianapolis, IN
For the reasons discussed above, I (e) Unsafe Condition
46225; phone: 317–230–3774. You may view
certify this proposed regulation: This AD was prompted by the possibility this service information at the FAA, Engine
(1) Is not a ‘‘significant regulatory of steel inclusions in the turbine wheel and Propeller Standards Branch, 1200
action’’ under Executive Order 12866, forging. We are proposing this AD to prevent District Avenue, Burlington, MA. For
(2) Is not a ‘‘significant rule’’ under a low-cycle fatigue failure of a 1st-stage gas information on the availability of this
generator turbine wheel or 1st-stage HPT material at the FAA, call 781–238–7759.
the DOT Regulatory Policies and
wheel. The unsafe condition, if not
Procedures (44 FR 11034, February 26, addressed, could result in uncontained Issued in Burlington, MA, on April 25,
1979), turbine wheel release, damage to the engine, 2018.
(3) Will not affect intrastate aviation and damage to the airplane. Robert J. Ganley,
in Alaska, and Manager, Engine and Propeller Standards
(4) Will not have a significant (f) Compliance
Branch, Aircraft Certification Service.
economic impact, positive or negative, Comply with this AD within the
[FR Doc. 2018–09012 Filed 4–27–18; 8:45 am]
on a substantial number of small entities compliance times specified, unless already
under the criteria of the Regulatory done. BILLING CODE 4910–13–P
Flexibility Act. (g) Required Actions
List of Subjects in 14 CFR Part 39 (1) Remove the affected 1st-stage gas DEPARTMENT OF TRANSPORTATION
generator turbine wheel and replace with a
Air transportation, Aircraft, Aviation part eligible for installation at the next engine Federal Aviation Administration
safety, Incorporation by reference, shop visit or before exceeding the life limit
Safety. of 4,800 engine cycles, whichever occurs 14 CFR Part 39
first, in accordance with the
The Proposed Amendment Accomplishment Instructions, Paragraph 2, [Docket No. FAA–2018–0359; Product
Accordingly, under the authority of RRC Alert Service Bulletin (ASB) AE Identifier 2018–NM–040–AD]
delegated to me by the Administrator, 2100D2–A–72–090, Revision 1, dated July 11,
2014, and RRC ASB AE 2100D3–A–72–286, RIN 2120–AA64
the FAA proposes to amend 14 CFR part Revision 1, dated July 11, 2014 (one
39 as follows: document). Airworthiness Directives; Dassault
(2) Remove the affected 1st-stage HPT Aviation Airplanes
PART 39—AIRWORTHINESS wheel and replace with a part eligible for
DIRECTIVES installation at the next engine shop visit or
AGENCY: Federal Aviation
before exceeding the life limit of 5,600 engine Administration (FAA), DOT.
■ 1. The authority citation for part 39 cycles, whichever occurs first, in accordance ACTION: Notice of proposed rulemaking
continues to read as follows: with the Accomplishment Instructions, (NPRM).
Authority: 49 U.S.C. 106(g), 40113, 44701. Paragraph 2, of RRC ASB AE 3007A–A–72–
419, Revision 2, dated December 4, 2017. SUMMARY: We propose to adopt a new
§ 39.13 [Amended] airworthiness directive (AD) for all
(h) Definition
■ 2. The FAA amends § 39.13 by adding Dassault Aviation Model MYSTERE–
For the purpose of this AD, an ‘‘engine FALCON 900 airplanes. This proposed
the following new airworthiness shop visit’’ is the induction of an engine into
directive (AD): AD was prompted by a determination
the shop for maintenance involving the
separation of pairs of major mating engine that more restrictive maintenance
Roll-Royce Corporation (Type Certificate
flanges, except that the separation of engine requirements and airworthiness
previously held by Allison Engine
Company): Docket No. FAA–2018–0259; flanges solely for the purposes of limitations are necessary. This proposed
Product Identifier 2018–NE–09–AD. transportation without subsequent engine AD would require revising the
maintenance is not an engine shop visit. maintenance or inspection program, as
(a) Comments Due Date applicable, to incorporate new and more
(i) Alternative Methods of Compliance
We must receive comments by June 14, (AMOCs) restrictive maintenance requirements
2018. and airworthiness limitations. We are
(1) The Manager, Chicago ACO Branch,
(b) Affected ADs FAA, has the authority to approve AMOCs proposing this AD to address the unsafe
None. for this AD, if requested using the procedures condition on these products.
found in 14 CFR 39.19. In accordance with DATES: We must receive comments on
(c) Applicability 14 CFR 39.19, send your request to your this proposed AD by June 14, 2018.
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This AD applies to: principal inspector or local Flight Standards ADDRESSES: You may send comments,
(1) Rolls-Royce Corporation (RRC) AE District Office, as appropriate. If sending
using the procedures found in 14 CFR
2100D2A turboprop engines with 1st-stage information directly to the manager of the
gas generator turbine wheels, part number certification office, send it to the attention of 11.43 and 11.45, by any of the following
(P/N) 23089692, with serial numbers (S/Ns) the person identified in paragraph (j)(1) of methods:
MW65898 or MW68310, installed. this AD. • Federal eRulemaking Portal: Go to
(2) RRC AE 2100D3 turboprop engines with (2) Before using any approved AMOC, http://www.regulations.gov. Follow the
1st-stage gas generator turbine wheels, P/N notify your appropriate principal inspector, instructions for submitting comments.
23088906, with S/Ns MW65895, MW65896, or lacking a principal inspector, the manager • Fax: 202–493–2251.
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Document Created: 2018-04-28 01:03:38
Document Modified: 2018-04-28 01:03:38
| 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 14, 2018. | |
| Contact | Kyri Zaroyiannis, Aerospace Engineer, Chicago ACO Branch, FAA, 2300 E Devon Ave., Des Plaines, IL 60018; phone: 847-294-7836; fax: 847-294-7834; email: [email protected] | |
| FR Citation | 83 FR 18751 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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