### 18617 Federal Register / Vol. 79, No. 64 / Thursday, April 3, 2014 / Rules and Regulations

(2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise.

(i) Alexander Schleicher, Segelflugzeugbau Alexander Schleicher GmbH & Co. Segelflugzeugbau ASK 21 Technical Note Nr. 4b, Issue for US registered gliders, dated October 31, 2013.

(ii) Reserved. (3) For Alexander Schleicher, Segelflugzeugbau service information identified in this AD, contact Alexander Schleicher GmbH & Co. Segelflugzeugbau, Alexander-Schleicher-Str. 1, D–36163 Poppenhausen, Germany; phone: +49 (0) 06658 89–0; fax: +49 (0) 06658 89–40;

Internet: http://www.alexanderschleicher.de/; email: info@alexanderschleicher.de

.

(4) You may view this service information at the FAA, Small Airplane Directorate, 901 Locust, Kansas City, Missouri 64106. For information on the availability of this material at the FAA, call (816) 329–4148.

(5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to: http://www.archives.gov/federal-register/cfr/ibrlocations.html

Issued in Kansas City, Missouri, on March
19, 2014. James E. Jackson, Acting Manager, Small Airplane Directorate, Aircraft Certification Service.

[FR Doc. 2014–06627 Filed 4–2–14; 8:45 am]

**BILLING CODE 4910–13–P**

**DEPARTMENT OF TRANSPORTATION**

**Federal Aviation Administration**

**14 CFR Part 39**

**[Docket No. FAA–2006–24777; Directorate Identifier 2006–NE–19–AD; Amendment 39–**  **17809; AD 2014–06–05]**

**RIN 2120–AA64**

**Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Turbofan**  **Engines**

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

**ACTION :**  Final rule.

**SUMMARY :**  We are superseding airworthiness directive (AD) 2007–03– 02 for all Rolls-Royce Deutschland (RRD) Tay 620–15, Tay 650–15, and Tay 651–54 turbofan engines. AD 2007–03– 02 required an ultrasonic inspection (UI) of low-pressure (LP) compressor fan blades for cracks on certain serial number (S/N) Tay 650–15 engines. AD 2007–03–02 also required, for all Tay 611–8, 620–15, Tay 650–15, and Tay 651–54 engines, initial and repetitive UIs of LP compressor fan blades. AD 2007–03–02 also required, for Tay 650– 15 and Tay 651–54 engines, UIs of LP compressor fan blades whenever the blade set is removed from one engine and installed on a different engine. This AD requires additional inspections for the affected engines and removal of the Tay 611–8 engine from the applicability. This AD was prompted by a report of an additional engine failure due to multiple fan blade separation. We are issuing this AD to prevent failure of the LP compressor fan blade, engine failure, and damage to the airplane.

**DATES :**  This AD is effective May 8, 2014. Federal Register approved the incorporation by reference of a certain publication listed in this AD as of May
8, 2014.

**ADDRESSES :**  For service informationidentified in this AD, contact RollsRoyce Deutschland Ltd & Co KG, Eschenweg 11, D–15827 Blankenfelde— Mahlow, Germany; phone: 49 0 33 7086 1200; fax: 49 0 33 7086 1212. 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–2006– 24777; 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, the mandatory continuing airworthiness information (MCAI), the regulatory evaluation, any comments received, and other information. The address for the Docket Office (phone: 800–647–5527) is Document 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 :**  Anthony W. Cerra Jr., Aerospace Engineer, Engine & Propeller Directorate, FAA, 12 New England Executive Park, Burlington, MA 01803; phone: 781–238–7128; fax: 781–238– 7199; email: anthony.cerra@faa.gov

. **SUPPLEMENTARY INFORMATION :** 

Discussion

We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2007–03–02, Amendment 39–14913 (72 FR 3936, January 29, 2007), (‘‘AD 2007–03–02’’). AD 2007–03–02 applied to all RRD Tay 611–8 and Tay 620–15 turbofan engines with LP compressor module, part number (P/N) M01100AA or P/N M01100AB, installed, and Tay 650–15 and Tay 651–54 turbofan engines with LP compressor module, P/N M01300AA or P/N M01300AB, installed. The NPRM published in the Federal Register on November 29, 2013 (78 FR 71532). The NPRM proposed to require a UI of LP compressor fan blades for cracks on certain S/N Tay 650–15 engines; initial and repetitive UIs of LP compressor fan blades for all Tay 620–15, Tay 650–15, and Tay 651–54 engines; and UIs of LP compressor fan blades whenever the blade set is removed from one engine and installed on a different engine for Tay 650–15 and Tay 651–54 engines. The NPRM also proposed to require additional inspections for the affected engines and removal of the Tay 611–8 engine from the applicability of this AD.

Comments

We gave the public the opportunity to participate in developing this AD. We received no comments on the NPRM (78 FR 71532, November 29, 2013).

Conclusion

We reviewed the relevant data and determined that air safety and the public interest require adopting this AD as proposed.
Costs of Compliance

We estimate that this AD affects about 52 engines installed on airplanes of U.S. registry. We also estimate that it will take about 4 hours per engine to remove and inspect an LP compressor blade set. The average labor rate is $85 per hour. Prorated parts life will cost about $11,750 per engine. Based on these figures, we estimate that the cost of this AD on U.S. operators is $628,680.
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


### 18618 Federal Register / Vol. 79, No. 64 / Thursday, April 3, 2014 / Rules and Regulations

is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking
action.
Regulatory Findings

This AD will not have federalism implications under Executive Order 13132. This AD will 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 that this AD:

(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),

(3) Will not affect intrastate aviation in Alaska to the extent that it justifies making a regulatory distinction, and

(4) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.
Adoption of the Amendment

Accordingly, under the authority delegated to me by the Administrator, the FAA amends part 39 of the Federal Aviation Regulations (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 removing airworthiness directive (AD) 2007–03–02, Amendment 39–14913 (72 FR 3936, January 29, 2007) and adding the following new AD:

2014–06–05 Rolls-Royce Deutschland Ltd & Co KG: (Type Certificate previously held by Rolls-Royce plc) Amendment 39– 17809; Docket No. FAA–2006–24777; Directorate Identifier 2006–NE–19–AD.

(a) Effective Date

This AD is effective May 8, 2014.

(b) Affected ADs

This AD supersedes AD 2007–03–02, Amendment 39–14913 (72 FR 3936, January 29, 2007). (c) Applicability This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD) Tay 620–15 turbofan engines with low-pressure (LP) compressor module, part number (P/N) M01100AA or P/N M01100AB, installed, and Tay 650–15 and Tay 651–54 turbofan engines with LP compressor module, P/N M01300AA or P/N M01300AB, installed.

(d) Unsafe Condition

This AD was prompted by a report of an additional engine failure due to multiple fan blade separation. We are issuing this AD to prevent failure of the LP compressor fan blade, engine failure, and damage to the airplane.

(e) Compliance

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

(1) For Tay 650–15 and Tay 651–54 engine LP compressor fan blade ultrasonic inspection (UI):

(i) After the effective date of this AD, whenever LP compressor fan blades areremoved from an engine, before reinstallation on a different engine, inspect the LP compressor fan blades and accomplish a UI of the LP compressor fan blades in accordance with Instruction I of paragraph 3 of RRD Alert Non-Modification Service Bulletin (NMSB) TAY–72–A1442, Revision 6, dated August 26, 2013.

(ii) After the effective date of this AD, during each engine shop visit, before return to service of the engine, inspect the LP compressor fan blades and accomplish a UI of the LP compressor fan blades in accordance with Instruction II of paragraph 3 of RRD Alert NMSB TAY–72–A1442, Revision 6, dated August 26, 2013.

(2) For Tay 620–15 engine LP compressor fan blade UI, after the effective date of this AD, before return to service of an engine after every mid-life, or every calendar-life, or every overhaul shop visit, inspect the LP compressor fan blades and accomplish a UI of the LP compressor fan blades in accordance with Instruction II of paragraph 3 of RRD Alert NMSB TAY–72–A1442, Revision 6, dated August 26, 2013.

(3) For Tay 620–15, Tay 650–15, and Tay 651–54 engine LP compressor fan blade and rotor disk replacement, if during any inspection required by paragraph (e)(1) or (e)(2) of this AD, any LP compressor fan blade is found cracked, before next flight or return to service of the engine, replace the complete set of the LP compressor fan blades and the LP compressor rotor disk.

(f) Credit for Previous Actions

If, before the effective date of this AD, you inspected or replaced any Tay 620–15, Tay 650–15, or Tay 651–54 turbofan engine LP compressor fan blade or rotor disk assembly using RRD Alert NMSB TAY–72–A1442, Revision 5, dated May 31, 2013, or earlier, you have satisfied the requirements of paragraphs (e)(1) through (e)(3) of this AD.

(g) Definitions

For the purposes of this AD for Tay 620– 15 engines: (1) A mid-life shop visit is an engine shop visit accomplished before accumulating 12,000 engine flight cycles since new (FCSN) or flight cycles (FC) since last engine mid-life shop visit;

(2) A calendar-life shop visit is an engine shop visit accomplished within 10 yearssince new or since the last engine calendarlife shop visit; and

(3) An overhaul shop visit is an engine shop visit accomplished before accumulating 22,000 engine FCSN or FC since the last engine overhaul shop visit.

(h) Alternative Methods of Compliance (AMOCs)

The Manager, Engine Certification Office, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request.

(i) Related Information

(1) For more information about this AD, contact Anthony W. Cerra Jr., Aerospace Engineer, Engine & Propeller Directorate, FAA, 12 New England Executive Park, Burlington, MA 01803; phone: 781–238– 7128; fax: 781–238–7199; email: anthony.cerra@faa.gov.

(2) Refer to MCAI European Aviation Safety Agency, AD 2013–151R2, dated September 2, 2013, for more information. You may examine the MCAI in the AD
docket on the Internet at http:// www.regulations.gov/ #!documentDetail;D=FAA-2006-24777-0012.

(3) 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.

(j) Material Incorporated by Reference

(1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.

(2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise.

(i) Rolls-Royce Deutschland Ltd & Co KG
Alert Non-Modification Service Bulletin No. TAY–72–A1442, Revision 6, dated August
26, 2013.

(ii) Reserved. (3) For RRD service information identified in this AD, contact Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11, D–15827 Blankenfelde-Mahlow, Germany; phone: 49 0 33 7086 1200; fax: 49 0 33 7086 1212.

(4) You may view this service information at 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.

(5) You may view this service information
at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to: http://www.archives.gov/federal-register/cfr/ibrlocations.html.


### 18619 Federal Register / Vol. 79, No. 64 / Thursday, April 3, 2014 / Rules and Regulations

Issued in Burlington, Massachusetts, on March 18, 2014.
Ann C. Mollica, Acting Assistant Directorate Manager, Engine & Propeller Directorate, Aircraft Certification
Service.

[FR Doc. 2014–06632 Filed 4–2–14; 8:45 am]

**BILLING CODE 4910–13–P**

**DEPARTMENT OF TRANSPORTATION**

**Federal Aviation Administration**

**14 CFR Part 39**

**[Docket No. FAA–2013–0975; Directorate Identifier 2013–NM–082–AD; Amendment**  **39–17813; AD 2014–06–09]**

**RIN 2120–AA64**

**Airworthiness Directives; ATR—GIE Avions de Transport Re**  ** ́ gional**  **Airplanes**

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

**ACTION :**  Final rule.

**SUMMARY :**  We are superseding Airworthiness Directive (AD) 2009–18– 18 for certain ATR—GIE Avions de Transport Re  ́ gional Model ATR42 and ATR72 airplanes. AD 2009–18–18 required repetitive inspections for damage and absence of repair of the cockpit forward side windows, and replacement if necessary. This new AD requires repetitive detailed inspections of the cockpit forward side window for damage and discrepancies; and replacement if necessary. Replacing both cockpit forward side windows with approved windows terminates the repetitive detailed inspections. This new AD also expands the applicability of AD 2009–18–18. The actions required by AD 2009–18–18 are not required by this AD. This AD was prompted by reports of a cockpit forward right-hand side blow out during flight. We are issuing this AD to detect and correct air/ water leakage of the cockpit forward side window, which could lead to rapid cabin decompression, resulting in loss of control of the airplane.

**DATES :**  This AD becomes effective May
8, 2014.

The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of May 8, 2014.

**ADDRESSES :**  You may examine the AD docket on the Internet at http:// www.regulations.gov/ #!docketDetail;D=FAA-2013-0975; or in person at 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.

For PPG Aerospace service information identified in this AD, contact PPG Aerospace, 12780 San Fernando Road, Sylmar, CA 91342; phone: 818–362–6711; fax: 818–362– 0603; Internet: http:// corporateportal.ppg.com/na/aerospace.

For ATR service information identified in this AD, contact ATR—GIE Avions de Transport Re  ́ gional, 1, Alle  ́ e Pierre Nadot, 31712 Blagnac Cedex, France; telephone +33 (0) 5 62 21 62 21; fax +33 (0) 5 62 21 67 18; email continued.airworthiness@atr.fr; Internet http://www.aerochain.com.

You may view this referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425–227–1221.

**FOR FURTHER INFORMATION CONTACT :**  Tom Rodriguez, Aerospace Engineer, International Branch, ANM–116, Transport Airplane Directorate, FAA 1601 Lind Avenue SW., Renton, WA 98057–3356; telephone (425) 227–1137; fax (425) 227–1149.

**SUPPLEMENTARY INFORMATION :** 

Discussion

We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2009–18–18, Amendment 39–16014 (74 FR 46336, September 9, 2009). AD 2009–18–18 applied to certain ATR—GIE Avions de Transport Re  ́ gional Model ATR42 and ATR72 airplanes. The NPRM published in the Federal Register on November 27, 2013 (78 FR 70892). The NPRM was prompted by reports of a cockpit forward right-hand side blow out during flight. The NPRM proposed to require repetitive detailed inspections of the cockpit forward side window for damage and discrepancies; and replacement if necessary. Replacing both cockpit forward side windows with approved windows would terminate the repetitive detailed inspections. The NPRM also proposed to expand the applicability of AD 2009–18–18. The actions required by AD 2009–18–18 are not required by the NPRM. We are issuing this AD to detect and correct air/ water leakage of the cockpit forward side window, which could lead to rapid cabin decompression, resulting in loss of control of the airplane.

The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, has issued EASA Airworthiness Directive 2013–0087, dated April 9, 2013 (referred to after this as the Mandatory Continuing Airworthiness Information, or ‘‘the MCAI’’), to correct an unsafe condition for all ATR—GIE Avions de Transport
Re

 ́ gional Model ATR42–200, –300, –320, and –500 airplanes; and Model ATR72–101, –201, –102, –202, –211, –212, and –212A airplanes; all manufacturer serial numbers. The MCAI

states:

In 2009, a Left-Hand (LH) forward side glass window of an ATR 72–212 aeroplane blew out while performing a ground pressure test. The investigation results revealed some anomalies on the forward side window at the level of the z-bar on the windows external side and at the level of the inner retainer on the windows internal side. Such anomalies are considered as precursors of this kind offailure. Air or water leakages between the zbar and the outer glass ply, or between the inner retainer and inner glass ply indicate the presence of deteriorating structural components in the window.

Neither ATR nor PPG Aerospace haveauthorized repairs on the window z-bar or zbar sealant. Any attempted repairs on these forward side window z-bars and/or z-bar sealants could lead to a similar event as described above.

In-flight loss of a forward side window would cause rapid cabin decompression, possibly resulting in flight crew incapacitation and consequent reduced control, or loss of control of the aeroplane, and cause the risk of injury to persons on the ground. The loss of a forward side window while the aeroplane is on the ground, due to differential cabin pressure, could result in injury to aeroplane occupants or to persons outside the aeroplane.

To address this potential unsafe condition, EASA issued AD 2009–0159–E [dated July 20, 2009] ( http://ad.easa.europa.eu/blob/

easa

_ ad

_2009

_ 0159E

_ superseded.pdf/EAD

_ 2009-0159-E

_ 1 ) [which corresponds to FAA AD 2009–18–18, Amendment 39–116014 (74 FR 46336, September 9, 2009)] to require repetitive inspections of the affected LH and right-hand (RH) cockpit forward side glass windows and, in case discrepancies are found as defined in PPG Aerospace Service Bulletin (SB) NP–158862–001, the replacement of the window(s).

Since that [EASA] AD was issued, a cockpit forward RH-side window blew out during flight on an ATR72–212 aeroplane. Degradation of the window is considered to have been the cause for this failure.

* * * [T]his [EASA] AD * * * requires to accomplish the [detailed] inspections in accordance with the instructions of Revision 1 of PPG Aerospace SB NP–158862–001, which provides more information on examples of [damaged and] discrepant conditions.

This [EASA] AD also requires the removal from service of the affected Part Number (P/ N) NP158862–1 and P/N NP158862–2 cockpit forward side windows, which constitutes terminating action for the repetitive inspections required by this AD.