### 14799 Federal Register / Vol. 76, No. 53 / Friday, March 18, 2011 / Rules and Regulations

**§ 39.13 [Amended]**

■ 2. The FAA amends § 39.13 by adding the following new AD:
2011–06–11 Rolls-Royce plc (RR): Amendment 39–16636; Docket No. FAA–2011–0176; Directorate Identifier 2011–NE–05–AD.

Effective Date

(a) This airworthiness directive (AD) becomes effective April 4, 2011.

Affected ADs

(b) None.
Applicability

(c) This AD applies to RR model RB211– Trent 970–84, 970B–84, 972–84, 972B–84, 977–84, 977B–84, and 980–84 turbofan engines. These engines are installed on, but not limited to, Airbus A380 series airplanes.

Reason

(d) An uncontained engine failure has recently occurred on a Rolls-Royce RB211 Trent 900 involving release of high energy debris and resulting in damage to the aeroplane. Analysis of the available elements from the incident investigation shows that an oil fire in the High Pressure/Intermediate Pressure (HP/IP) structure cavity may have initiated a sequence of events leading to rupture of the drive arm of the IP Turbine (IPT) disc and subsequent overspeed and burst of that same disc.

Rolls-Royce has developed a modification of the Engine Electronic Controller (EEC) software, featuring an IPT Overspeed Protection System (IPTOS). The purpose of the IPTOS functionality is to detect engine conditions that may potentially lead to an IP turbine overspeed, and shut down the engine before the level of overspeed reaches the disc burst speed. We are issuing this AD to prevent overspeed of the intermediate pressure turbine, which could result in loss of disc integrity, an uncontained failure of the engine, and damage to the airplane.
Actions and Compliance

(e) Unless already done, do the following actions:

(1) Within 10 flight cycles after the effective date of this AD, incorporate software 10.6 to the EEC.

(2) Guidance on incorporating software 10.6 can be found in Rolls-Royce plc Trent 900 Series Propulsion Systems Alert Service Bulletin (SB) No. RB.211–73–AG639, dated December 3, 2010.

Prior Software Version Prohibition

(3) After incorporation of software 10.6, do not incorporate any software version prior to 10.6 to the EEC.

FAA AD Differences

(f) This AD differs from the Mandatory Continuing Airworthiness Information (MCAI) as follows:

(1) MCAI European Aviation Safety Agency (EASA) AD 2010–0262, dated December 13, 2010, requires that after EEC modification of an installed engine as required by that AD, do not intermix with any EEC software standards prior to modification 73–F328 (standard 9.2.1) on that airplane. This AD does not, because there are no U.S. registered airplanes with RB211–Trent 900 engines.

(2) MCAI EASA AD 2010–0262, dated December 13, 2010, states that from the effective date of the AD, no engine may be installed in an airplane unless the engine has incorporated the new software. This AD does not, because there are no U.S. registered airplanes with RB211–Trent 900 engines.

(3) MCAI EASA AD 2010–0262, dated December 13, 2010, allows incorporation of later approved versions of EEC software standards that will include IPTOS functionality. This AD does not. Instead, we prohibit software installation prior to version
10.6. Alternative Methods of Compliance (AMOCs)

(g) The Manager, Engine Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19.

Related Information

(h) Refer to MCAI EASA AD 2010–0262, dated December 13, 2010, and Rolls-Royce plc Trent 900 Series Propulsion Systems Alert SB No. RB.211–73–AG639, dated December 3, 2010, for related information.

(i) Contact Rolls-Royce plc, P.O. Box 31, Derby, DE24 8BJ, United Kingdom; phone: 44 1332 242424; fax: 44 1332 249936, for a copy of the service information referenced in this AD.

(j) Contact Alan Strom, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: alan.strom@faa.gov; phone: (781) 238–7143; fax: (781) 238–7199, for more information about this AD.
Material Incorporated by Reference

(k) None. Issued in Burlington, Massachusetts, on March 11, 2011. Peter A. White, Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service.
[FR Doc. 2011–6154 Filed 3–17–11; 8:45 am]

**BILLING CODE 4910–13–P**

**DEPARTMENT OF TRANSPORTATION**

**Federal Aviation Administration**

**14 CFR Part 71**

**[Docket No. FAA–2010–0938; Airspace Docket No. 10–ANE–108]** 

**Amendment of Class E Airspace; Newport, VT** 

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

**ACTION :**  Final rule.

**SUMMARY :**  This action amends Class E airspace at Newport, Vermont. The Newport Non-Directional Beacon (NDB) has been decommissioned and new Standard Instrument Approach Procedures (SIAPs) have been developed for Newport State Airport. This action enhances the safety and airspace management of Instrument Flight Rules (IFR) operations at the airport.

**DATES :**  Effective date: 0901 UTC, June 30, 2011. The Director of the Federal Register approves this incorporation by reference action under title 1, Code of Federal Regulations, part 51, subject to the annual revision of FAA Order 7400.9 and publication of conforming amendments.

**FOR FURTHER INFORMATION CONTACT :**  Richard Horrocks, Operations Support Group, Eastern Service Center, Federal Aviation Administration, P.O. Box 20636, Atlanta, Georgia 30320; telephone (404) 305–5588.

**SUPPLEMENTARY INFORMATION :**  History

On November 29, 2010, the FAA published in the Federal Register a notice of proposed rulemaking to amend Class E airspace 700 feet above the surface, at Newport, VT (75 FR 73015) Docket No. FAA–2010–0938. Interested parties were invited to participate in this rulemaking effort by submitting written comments on the proposal to the FAA. No comments were received. Class E airspace designations are published in paragraph 6005 of FAA Order 7400.9U dated August 18, 2010, and effective September 15, 2010, which is incorporated by reference in 14 CFR 71.1. The Class E airspace designations listed in this document will be published subsequently in the Order.

The Rule

This amendment to Title 14, Code of Federal Regulations (14 CFR) part 71 amends Class E airspace extending upward from 700 feet above the surface to support new SIAPs developed at Newport State Airport, Newport, Vermont. Airspace reconfiguration is necessary due to the decommissioning of the Newport NDB and cancellation of the NDB approach. Controlled airspace is necessary for the safety and management of IFR operations at the airport.

The FAA has determined that this regulation only involves an established body of technical regulations for which frequent and routine amendments are necessary to keep them operationally current, is non-controversial and unlikely to result in adverse or negative comments. It, therefore, (1) Is not a

‘‘ significant regulatory action’’ under


### 14800 Federal Register / Vol. 76, No. 53 / Friday, March 18, 2011 / Rules and Regulations

Executive Order 12866; (2) is not a

‘‘ significant rule’’ under DOT Regulatory Policies and Procedures (44 FR 11034; February 26, 1979); and (3) does not warrant preparation of a Regulatory Evaluation as the anticipated impact is so minimal. Since this is a routine matter that will only affect air traffic procedures and air navigation, it is certified that this rule, when promulgated, will not have a significant economic impact on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.

The FAA’s authority to issue rules regarding aviation safety is found in Title 49 of the United States Code. 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.

This rulemaking is promulgated under the authority described in subtitle VII, part A, subpart I, section 40103. Under that section, the FAA is charged with prescribing regulations to assign the use of airspace necessary to ensure the safety of aircraft and the efficient use of airspace. This regulation is within the scope of that authority as it amends Class E airspace at Newport, Vermont. Lists of Subjects in 14 CFR Part 71

Airspace, Incorporation by reference, Navigation (Air). Adoption of the Amendment

In consideration of the foregoing, the Federal Aviation Administration amends 14 CFR part 71 as follows:

**PART 71—DESIGNATION OF CLASS A, B, C, D AND E AIRSPACE AREAS; AIR**  **TRAFFIC SERVICE ROUTES; AND REPORTING POINTS** 

■ 1. The authority citation for part 71 continues to read as follows:

Authority: 49 U.S.C. 106(g); 40103, 40113, 40120; E.O. 10854, 24 FR 9565, 3 CFR, 1959– 1963 Comp., p. 389.

**§ 71.1 [Amended]**

■ 2. The incorporation by reference in 14 CFR 71.1 of Federal Aviation Administration Order 7400.9U, Airspace Designations and Reporting Points, dated August 18, 2010, effective September 15, 2010, is amended as follows:
Paragraph 6005 Class E Airspace Areas Extending Upward From 700 Feet or More Above the Surface of the Earth.
* * * * *
ANE VT E5 Newport, VT [AMENDED] Newport State Airport, VT (Lat. 44 ° 53 ′ 20 ′′ N., long. 72 ° 13 ′45 ′′ W.) That airspace extending upward from 700 feet above the surface within a 6.4-mile radius of the Newport State Airport and within 1.8 miles each side of the 159 ° bearing from the airport extending from the 6.4-mile radius to 10.9 miles south of Newport State Airport.

Issued in College Park, Georgia, on March 8, 2011. Barry A. Knight, Acting Manager, Operations Support Group, Eastern Service Center, Air Traffic Organization.
[FR Doc. 2011–6352 Filed 3–17–11; 8:45 am]

**BILLING CODE 4910–13–P**

**DEPARTMENT OF TRANSPORTATION**

**Federal Aviation Administration**

**14 CFR Part 71**

**[Docket No. FAA–2010–1007; Airspace Docket No. 10–ANE–109]** 

**Establishment of Class E Airspace; Wolfeboro, NH** 

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

**ACTION :**  Final rule.

**SUMMARY :**  This action establishes Class E Airspace at Wolfeboro, NH, to accommodate a new Area Navigation (RNAV) Global Positioning System (GPS) special Instrument Approach Procedure (SIAP) serving Huggins Hospital Heliport. This action enhances the safety and airspace management of Instrument Flight Rules (IFR) operations within the National Airspace System.

**DATES :**  Effective 0901 UTC, June 30, 2011. The Director of the Federal Register approves this incorporation by reference action under title 1, Code of Federal Regulations, part 51, subject to the annual revision of FAA Order 7400.9 and publication of conforming amendments.

**FOR FURTHER INFORMATION CONTACT :**  Richard Horrocks, Operations Support Group, Eastern Service Center, Federal Aviation Administration, P.O. Box 20636, Atlanta, Georgia 30320; telephone (404) 305–5588.

**SUPPLEMENTARY INFORMATION :**  History

On December 28, 2010, the FAA published in the Federal Register a Notice of Proposed Rulemaking to establish Class E airspace at Wolfeboro, NH (75 FR 81518). Interested parties were invited to participate in this rulemaking effort by submitting written comments on the proposal to the FAA. No comments were received. Class E airspace designations are published in paragraph 6005 of FAA Order 7400.9U dated August 18, 2010, and effective September 15, 2010, which is incorporated by reference in 14 CFR 71.1. The Class E airspace designations listed in this document will be published subsequently in the Order.

The Rule

This amendment to Title 14, Code of Federal Regulations (14 CFR) part 71 establishes the Class E airspace extending upward from 700 feet above the surface at Wolfeboro, NH, to provide controlled airspace required to support the RNAV (GPS) special standard instrument approach procedures developed for Huggins Hospital Heliport. This action is necessary for the safety and management of IFR operations at the heliport.

The FAA has determined that this regulation only involves an established body of technical regulations for which frequent and routine amendments are necessary to keep them operationally current, is non-controversial and unlikely to result in adverse or negative comments. It, therefore, (1) is not a

‘‘ significant regulatory action’’ under Executive Order 12866; (2) is not a

‘‘ significant rule’’ under DOT Regulatory Policies and Procedures (44 FR 11034; February 26, 1979); and (3) does not warrant preparation of a Regulatory Evaluation as the anticipated impact is so minimal. Since this is a routine matter that will only affect air traffic procedures and air navigation, it is certified that this rule, when promulgated, will not have a significant economic impact on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.

The FAA’s authority to issue rules regarding aviation safety is found in Title 49 of the United States Code. 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.

This rulemaking is promulgated under the authority described in Subtitle VII, Part A, Subpart I, Section 40103. Under that section, the FAA is charged with prescribing regulations to assign the use of airspace necessary to ensure the safety of aircraft and the efficient use of airspace. This regulation is within the scope of that authority as it establishes Class E airspace at Wolfeboro, NH. Lists of Subjects in 14 CFR Part 71:

Airspace, Incorporation by reference, Navigation (Air).