22168 Federal Register / Vol. 78, No. 72 / Monday, April 15, 2013 / Rules and Regulations 

increase the oil consumption. We are issuing 

this AD to prevent excessive oil 

consumption, which could result in an inflight engine shutdown, forced landing, and 

damage to the airplane. 

(e) Actions and Compliance 

Unless already done, do the following 

actions. 

(1) Within 5 flight hours or 20 days after 

the effective date of this AD, whichever 

occurs first, perform a one-time visual 

inspection of the center and grounding 

electrodes of both top and bottom spark plugs 

on cylinder 2, and cylinder 3, for unusual 

deposits (excessive carbon or oil). Any excess 

indicates the cylinder head is not 

manufactured to proper specification and is 

leaking oil into the combustion chamber. 

(2) Before further flight, replace cylinder 

heads found to be not manufactured to 

proper specification. 

(3) From the effective date of this AD, do 

not install any engine listed in the 

applicability of this AD on an airplane, 

unless the engine has been inspected and, 

depending on the findings, affected cylinder 

heads have been replaced as required by this 

AD. 

(f) Definitions 

For the purpose of this AD, unusual 

deposits (excessive carbon or oil) is when: 

(1) Carbon is a visual buildup of dark 

carbon deposits on the center and grounding 

electrodes as well as the immediate 

surrounding area, and 

(2) Excessive oil is a visual buildup 

indicated by the presence of oil on the center 

and grounding electrodes as well as the 

immediate surrounding area, giving a wet 

appearance. 

(g) Alternative Methods of Compliance 

(AMOCs) 

The Manager, Engine Certification Office, 

FAA, may approve AMOCs to this AD. Use 

the procedures found in 14 CFR 39.19 to 

make your request. 

(h) Related Information 

(1) For more information about this AD, 

contact Frederick Zink, Aerospace Engineer, 

Engine Certification Office, FAA, Engine & 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: 781–238–7779; fax: 781–238–7199; 

email: frederick.zink@faa.gov. 

(2) Refer to European Aviation Safety 

Agency Emergency Airworthiness Directive 

2013–0055–E, dated March 6, 2013, and BRPPowertrain GmbH & Co KG Rotax Aircraft 

Engines Alert Service Bulletin No. ASB–912– 

062, Revision 1 and ASB–914–044, Revision 

1 (combined into one document), dated 

March 5, 2013, for related information. 

(3) For service information identified in 

this AD, contact BRP-Powertrain GmbH & Co 

KG, Welser Strasse 32, A–4623 Gunskirchen, 

Austria, or go to: http:// 

www.FLYROTAX.com. 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. 

(i) Material Incorporated by Reference 

None. 

Issued in Burlington, Massachusetts, on 

April 4, 2013. 

Colleen M. D’Alessandro, 

Manager, Engine & Propeller Directorate, 

Aircraft Certification Service. 

[FR Doc. 2013–08460 Filed 4–12–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–1217; Directorate 

Identifier 2012–NE–39–AD; Amendment 39– 

17414; AD 2013–07–10] 

RIN 2120–AA64 

Airworthiness Directives; International 

Aero Engines AG Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

International Aero Engines AG (IAE), 

V2525–D5 and V2528–D5 turbofan 

engines, with a certain No. 4 bearing 

internal scavenge tube and a certain No. 

4 bearing external scavenge tube 

installed. This AD was prompted by a 

report of an engine under-cowl fire and 

commanded in-flight shutdown. This 

AD would require replacement of 

certain part number (P/N) No. 4 bearing 

internal scavenge tubes, and alignment 

checks of certain P/N No. 4 bearing 

external scavenge tubes. We are issuing 

this AD to prevent engine fire and 

damage to the airplane. 

DATES: This AD is effective May 20, 

2013. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of May 20, 2013. 

ADDRESSES: For service information 

identified in this AD, contact 

International Aero Engines, 628 Hebron 

Avenue, Suite 400, Glastonbury, CT 

06033; phone: 860–368–3823; fax: 860– 

755–6876. You may view this service 

information at the FAA, Engine & 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803. 

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; 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 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: 

Martin Adler, Aerospace Engineer, 

Engine & Propeller Directorate, FAA, 12 

New England Executive Park, 

Burlington, MA 01803; phone: 781– 

238–7157; fax: 781–238–7199; email: 

martin.adler@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an AD that would 

apply to the specified products. That 

NPRM published in the Federal 

Register on January 9, 2013 (78 FR 

1776). That NPRM proposed to require 

the replacement of all No. 4 bearing 

internal scavenge tubes, P/N 2A2074– 

01. That NPRM also proposed to require 

checking the alignment of the No. 4 

bearing external scavenge tube, P/N 

6A5254, and if it fails the check, 

proposed to require replacement of the 

external scavenge tube. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. The 

following presents the comment 

received on the proposal and the FAA’s 

response to the comment. 

Request To Change the Compliance 

Time 

The National Transportation Safety 

Board (NTSB) requested that the AD 

include a maximum number of 

allowable cycles for the No. 4 bearing 

internal scavenge tube. The NTSB is 

concerned that the proposed AD 

requirement to remove the internal 

scavenge tube at the next combustor 

module-level exposure has the potential 

to leave the tube installed indefinitely. 

We do not agree. Required 

maintenance provides sufficient 

limitations on the maximum number of 

cycles that the No. 4 bearing internal 

scavenge tube can experience. We did 

not change the AD. 

Conclusion 

We reviewed the relevant data, 

considered the comment received, and 

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Federal Register / Vol. 78, No. 72 / Monday, April 15, 2013 / Rules and Regulations 22169 

determined that air safety and the 

public interest require adopting the AD 

as proposed. 

Costs of Compliance 

We estimate that this AD will affect 

123 engines installed on airplanes of 

U.S. registry. We estimate that it will 

take 1.5 hours per engine to replace the 

No. 4 bearing internal scavenge tube, 

and 3 hours per engine to replace the 

No. 4 bearing external scavenge tube. 

Required parts will cost $25,251 per 

engine. The average labor rate is $85 per 

hour. Based on these figures, we 

estimate the cost of the AD on U.S. 

operators to be $3,152,921. 

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. 

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 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): 

2013–07–10 International Aero Engines 

AG: Amendment 39–17414; Docket No. 

FAA–2012–1217; Directorate Identifier 

2012–NE–39–AD. 

(a) Effective Date 

This AD is effective May 20, 2013. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to International Aero 

Engines AG (IAE), V2525–D5 and V2528–D5 

turbofan engines, serial numbers V20001 

through V20285, with No. 4 bearing internal 

scavenge tube, part number (P/N) 2A2074– 

01, and No. 4 bearing external scavenge tube, 

P/N 6A5254, installed. 

(d) Unsafe Condition 

This AD was prompted by a report of an 

engine under-cowl fire and commanded inflight shutdown. We are issuing this AD to 

prevent engine fire and damage to the 

airplane. 

(e) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(f) No. 4 Bearing Internal Scavenge Tube, P/ 

N 2A2074–01, Replacement 

Replace the No. 4 bearing internal scavenge 

tube, P/N 2A2074–01, at each combustor 

module-level exposure after the No. 4 bearing 

internal scavenge tube has accumulated 

10,000 flight cycles (FCs) since new. If the 

FCs on the tube cannot be confirmed, replace 

the tube at each combustor module-level 

exposure. 

(g) No. 4 Bearing External Scavenge Tube, 

P/N 6A5254, Installation 

At each installation, check the alignment of 

the No. 4 bearing external scavenge tube, P/ 

N 6A5254, in accordance with paragraph 3.A. 

PART 2, of IAE Non-Modification Service 

Bulletin (NMSB) No. V2500–ENG–72–0630, 

Revision 1, dated September 20, 2012. If the 

tube is misaligned, replace with a new tube. 

(h) Definition 

Combustor module-level exposure is 

defined as separation of the combustor case 

and the compressor case flanges. 

(i) Alternative Methods of Compliance 

(AMOCs) 

The Manager, Engine Certification Office, 

FAA, may approve AMOCs to this AD. Use 

the procedures found in 14 CFR 39.19 to 

make your request. 

(j) Related Information 

For more information about this AD, 

contact Martin Adler, Aerospace Engineer, 

Engine & Propeller Directorate, FAA, 12 New 

England Executive Park, Burlington, MA 

01803; phone: 781–238–7157; fax: 781–238– 

7199; email: martin.adler@faa.gov. 

(k) 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) International Aero Engines AG NonModification Service Bulletin No. V2500– 

ENG–72–0630, Revision 1, dated September 

20, 2012. 

(ii) Reserved. 

(3) For service information identified in 

this AD, contact International Aero Engines 

AG, 628 Hebron Avenue, Suite 400, 

Glastonbury, CT 06033; phone: 860–368– 

3823; fax: 860–755–6876. 

(4) You may view this service information 

at the FAA, Engine & Propeller Directorate, 

12 New England Executive Park, Burlington, 

MA 01803. 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. 

Issued in Burlington, Massachusetts, on 

March 3, 2013. 

Colleen M. D’Alessandro, 

Assistant Manager, Engine & Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2013–08448 Filed 4–12–13; 8:45 am] 

BILLING CODE 4910–13–P 

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