### 52211 Federal Register / Vol. 80, No. 167 / Friday, August 28, 2015 / Proposed Rules

document also announced a public meeting to receive comment about the proposed standards and associated analyses and results. 80 FR 39486. The document provided for the submission of written comments by September 8, 2015, and oral comments were also accepted at a public meeting held on July 28, 2015.

The Plumbing Manufacturers International requested, by letter dated August 13, 2015, an extension of the public comment period for the proposed rulemaking, in view of the scope of the proposed rulemaking, technical nature, and amount of data requested.

DOE has determined that an extension of the public comment period for the notice of proposed rulemaking is appropriate to allow interested parties additional time to submit comments for DOE’s consideration. Thus, DOE is extending the comment period by 15 days. DOE will consider any comments received prior to September 23, 2015, to be timely submitted.

Issued in Washington, DC, on August 21,
2015. Kathleen B. Hogan, Deputy Assistant Secretary for Energy Efficiency and Renewable Energy.
[FR Doc. 2015–21319 Filed 8–27–15; 8:45 am]

**BILLING CODE 6450–01–P**

**DEPARTMENT OF TRANSPORTATION**

**Federal Aviation Administration**

**14 CFR Part 39**

**[Docket No. FAA–2013–0627; Directorate Identifier 2012–NM–021–AD]** 

**RIN 2120–AA64**

**Airworthiness Directives; BAE Systems (Operations) Limited**  **Airplanes**

**AGENCY :**  Federal Aviation Administration (FAA), Department of Transportation (DOT).

**ACTION :**  Proposed rule; withdrawal.

**SUMMARY :**  The FAA withdraws a notice of proposed rulemaking (NPRM) that proposed a new airworthiness directive (AD), which would have applied to all BAE Systems (Operations) Limited Model BAe 146 series airplanes and Model Avro 146–RJ series airplanes. The NPRM would have superseded AD 2011–24–06 and required revising the maintenance program to incorporate new airworthiness limitations for reduced safe life limits on certain nose landing gear fittings. Since the NPRM was issued, we have received new data indicating that the airworthiness limitations contained in section 5 of the aircraft maintenance manual has been revised to include additional tasks and limitations. Accordingly, the NPRM is withdrawn.

**DATES :**  As of August 28, 2015, the proposed rule, which was published in the Federal Register on July 24, 2013 (78 FR 44469), is withdrawn.

**ADDRESSES :**  You may examine the AD docket on the Internet at http:// www.regulations.gov by searching for and locating Docket No. FAA–2013– 0627; 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 AD action, the NPRM (78 FR 44469, July 24, 2013), the regulatory evaluation, any comments received, and other information. The address for the Docket Office (telephone 800–647–5527) is the Docket Management Facility, U.S. Department of Transportation, Docket Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC 20590.

**FOR FURTHER INFORMATION CONTACT :**  Todd Thompson, Aerospace Engineer, International Branch, ANM–116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057–3356; telephone 425–227–1175; fax 425–227–1149.

**SUPPLEMENTARY INFORMATION :** 

Discussion

We proposed to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) with a notice of proposed rulemaking (NPRM) for a new AD for all BAE Systems (Operations) Limited Model BAe 146 series airplanes and Model Avro 146–RJ series airplanes. The NPRM published in the Federal Register on July 24, 2013 (78 FR 44469). The NPRM would have superseded AD 2011–24–06, Amendment 39–16870 (76 FR 73477, November 29, 2011). The NPRM would have continued to require existing limitations and would have required revising the maintenance program to incorporate the following limitations:

• Subject 05–10–15, ‘‘Aircraft Equipment Airworthiness Limitations,’’ of Chapter 05, ‘‘Time Limits/ Maintenance Checks,’’ of BAe 146 Series/AVRO 146–RJ Series Aircraft Maintenance Manual, Revision 105, dated July 15, 2011.

• Subject 05–20–02, ‘‘Airframe Scheduled Maintenance—Landing/ Calendar Life Extended,’’ of Chapter 05, ‘‘Time Limits/Maintenance Checks,’’ of BAe 146 Series/AVRO 146–RJ Series Aircraft Maintenance Manual, Revision 105, dated July 15, 2011.

• Subject 05–20–05, ‘‘Airframe Scheduled Maintenance—Life Extension Programme Landings Life Extended,’’ of Chapter 05, ‘‘Time Limits/Maintenance Checks,’’ of BAe 146 Series/AVRO 146–RJ Series Aircraft Maintenance Manual, Revision 105, dated July 15, 2011.

The NPRM was prompted by a determination that reduced safe life limits on certain nose landing gear NLG fittings were necessary. Analysis of these fittings showed the presence of forging indications in the flash line, which could reduce the life limits of these fittings. The proposed actions were intended to prevent fatigue cracking of certain structural elements, which could adversely affect the structural integrity of the airplane. Actions Since NPRM (78 FR 44469, July 24, 2013) Was Issued

Since we issued the NPRM (78 FR 44469, July 24, 2014), BAE Systems (Operations) Limited has revised Chapter 05, ‘‘Time Limits/Maintenance Checks,’’ of the BAe 146 Series/AVRO 146–RJ Series Aircraft Maintenance Manual (AMM). Therefore, the NPRM proposal to incorporate new airworthiness limitations with reduced safe life limits on certain nose landing gear fittings contained in a previous issue of the AMM are no longer relevant.

FAA’s Conclusions

Upon further consideration, we have determined that the changes to the AMM proposed in the NPRM (78 FR 44469, July 24, 2013) are no longer relevant and there is no benefit to proceeding with the publication of a final rule. Accordingly, the NPRM is withdrawn. The FAA is considering issuing a different rulemaking action to require implementation of the current revision of BAE Systems (Operations) Limited Chapter 05, ‘‘Time Limits/ Maintenance Checks,’’ of the BAe 146 Series/AVRO 146–RJ Series AMM.

Withdrawal of the NPRM (78 FR 44469, July 24, 2013) does not preclude the FAA from issuing another related action or commit the FAA to any course of action in the future. Regulatory Impact

Since this action only withdraws an NPRM (78 FR 44469, July 24, 2013), it is neither a proposed nor a final rule and therefore is not covered under Executive Order 12866, the Regulatory Flexibility Act, or DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979).


### 52212 Federal Register / Vol. 80, No. 167 / Friday, August 28, 2015 / Proposed Rules

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.

The Withdrawal

Accordingly, we withdraw the NPRM, Docket No. FAA–2013–0627, Directorate Identifier 2012–NM–021–AD, which was published in the Federal Register on July 24, 2013 (78 FR 44469).

Issued in Renton, Washington, on August 20, 2015. Kevin Hull, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service.
[FR Doc. 2015–21247 Filed 8–27–15; 8:45 am]

**BILLING CODE 4910–13–P**

**DEPARTMENT OF TRANSPORTATION**

**Federal Aviation Administration**

**14 CFR Part 39**

**[Docket No. FAA–2012–0002; Directorate Identifier 2011–NE–42–AD]** 

**RIN 2120–AA64**

**Airworthiness Directives; Continental Motors, Inc. Reciprocating Engines** 

**AGENCY :**  Federal Aviation Administration (FAA), DOT.

**ACTION :**  Supplemental notice of proposed rulemaking (NPRM); reopening of comment period.

**SUMMARY :**  We are revising an earlier proposed airworthiness directive (AD) for certain Airmotive Engineering Corp. (AEC) replacement parts manufacturer approval (PMA) cylinder assemblies marketed by Engine Components International Division (ECi). We subsequently issued an initial supplemental NPRM (SNPRM) that proposed to modify the schedule for removal of the affected cylinder assemblies, added that overhauled affected cylinder assemblies be removed within 80 hours, eliminated a reporting requirement, and removed a requirement for initial and repetitive inspections. This second SNPRM reopens the comment period to allow the public the chance to comment on additional information added to the docket of this proposed rule. We are proposing this SNPRM to prevent failure of the cylinder assemblies, whichcould lead to failure of the engine, inflight shutdown, and loss of control of the airplane.

**DATES :**  We must receive comments on this SNPRM by September 28, 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: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays.

For service information identified in this proposed AD, contact Engine Components International Division, 9503 Middlex Drive, San Antonio, TX 78217; phone: 210–820–8101; Internet: http://www.eci.aero/pages/tech

_ svcpubs.aspx. 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–2012– 0002; 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 :**  Jurgen E. Priester, Aerospace Engineer, Delegation Systems Certification Office, FAA, Rotorcraft Directorate, 2601 Meacham Blvd., Fort Worth, TX 76137; phone: 817–222–5190; fax: 817–222– 5785; email: jurgen.e.priester@faa.gov.

**SUPPLEMENTARY INFORMATION :** 
Comments Invited

We invite you to send any written relevant data, views, or arguments about this proposed AD. Send your comments to an address listed under the

**ADDRESSES** section. Include ‘‘Docket No. FAA–2012–0002; Directorate Identifier 2011–NE–42–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 issued an NPRM to amend 14 CFR part 39 by adding an AD that would apply to certain AEC replacement PMA cylinder assemblies marketed by ECi. These assemblies are used on Continental Motors, Inc. (CMI) model 520 and 550 reciprocating engines, and all other CMI engine models approved for the use of models 520 and 550 cylinder assemblies such as the CMI model 470 when modified by STC. The NPRM published in the Federal Register on August 12, 2013 (78 FR 48828). The NPRM proposed to require initial and repetitive inspections, immediate replacement of cracked cylinder assemblies, and replacement ofcylinder assemblies at reduced times-inservice (TIS) since new. The NPRM also proposed to prohibit the installation of affected cylinder assemblies into any engine.

We subsequently issued an SNPRM which published in the Federal Register on January 8, 2015 (80 FR 1008). The SNPRM proposed a modified schedule for removal of the affected cylinder assemblies, added that overhauled affected cylinder assemblies be removed within 80 hours, eliminated a reporting requirement, and removed the requirement for initial and repetitive inspections.

Actions Since Previous SNPRM Was Issued

Since we issued the SNPRM (80 FR 1008, January 8, 2015), we received numerous additional comments on the proposed rule. After reviewing the comments, we decided to reopen the docket so that we could provide additional information to explain the rationale for this AD action. We also wanted to provide commenters with the opportunity to comment on this additional information. We added the following information to Docket No. FAA–2012–0002: (1) The risk analysis conducted by the FAA’s Chief Scientific and Technical Adviser, Aircraft Safety Analysis; (2) a risk analysis using the Small Airplane Risk Analysis methods; (3) a June 2011, presentation by Airmotive Engineering to the FAA