Federal Register / Vol. 79, No. 160 / Tuesday, August 19, 2014 / Rules and Regulations 48961 

Issued in Renton, Washington, on July 30, 

2014. 

Jeffrey E. Duven, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2014–18906 Filed 8–18–14; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–1327; Directorate 

Identifier 2012–NE–47–AD; Amendment 39– 

17934; AD 2014–16–10] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

plc Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are superseding 

airworthiness directive (AD) 2013–12– 

01 for all Rolls-Royce plc (RR) model 

RB211 Trent 768–60, 772–60, and 

772B–60 turbofan engines. AD 2013– 

12–01 required a one-time ultrasonic 

inspection (UI) of low-pressure (LP) 

compressor blades with more than 2,500 

flight cycles since new or last 

inspection. This AD requires initial and 

repetitive UIs of the affected LP 

compressor blades. This AD was 

prompted by LP compressor blade 

partial airfoil release events. We are 

issuing this AD to prevent LP 

compressor blade airfoil separations, 

damage to the engine, and damage to the 

airplane. 

DATES: This AD is effective September 

23, 2014. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of September 23, 2014. 

ADDRESSES: For service information 

identified in this AD, contact RollsRoyce plc, P.O. Box 31, Derby DE24 8BJ, 

UK; phone: 44 0 1332 242424; fax: 44 

0 1332 249936. 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– 

1327; 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, 

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: 

Robert Green, Aerospace Engineer, 

Engine Certification Office, FAA, Engine 

& Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: 781–238–7754; fax: 781–238– 

7199; email: robert.green@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2013–12–01, 

Amendment 39–17478 (78 FR 37703, 

June 24, 2013), (‘‘AD 2013–12–01’’). AD 

2013–12–01 applied to the specified 

products. The NPRM published in the 

Federal Register on May 23, 2014 (79 

FR 29694). The NPRM proposed to 

require initial and repetitive UIs of the 

affected LP compressor blades. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

received no comments on the NPRM (79 

FR 29694, May 23, 2014). 

Conclusion 

We reviewed the available 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 56 

engines installed on airplanes of U.S. 

registry. We also estimate that it will 

take about 44 hours per engine to 

comply with the initial inspection 

requirements in this AD. The average 

labor rate is $85 per hour. Based on 

these figures, we estimate the cost of 

this AD on U.S. operators to be 

$209,440. 

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 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) 

2013–12–01, Amendment 39–17478 (78 

FR 37703, June 24, 2013), and adding 

the following new AD: 


wreier-aviles on DSK5TPTVN1PROD with RULES
48962 Federal Register / Vol. 79, No. 160 / Tuesday, August 19, 2014 / Rules and Regulations 

2014–16–10 Rolls-Royce plc: Amendment 

39–17934; Docket No. FAA–2012–1327; 

Directorate Identifier 2012–NE–47–AD. 

(a) Effective Date 

This AD is effective September 23, 2014. 

(b) Affected ADs 

This AD supersedes AD 2013–12–01, 

Amendment 39–17478 (78 FR 37703, June 

24, 2013). 

(c) Applicability 

This AD applies to Rolls-Royce plc (RR) 

model RB211 Trent 768–60, 772–60, and 

772B–60 turbofan engines, with low-pressure 

(LP) compressor blade, part numbers (P/Ns) 

FK23411, FK25441, FK25968, FW11901, 

FW15393, FW23643, FW23741, FW23744, 

KH23403, or KH23404, installed. 

(d) Unsafe Condition 

This AD was prompted by LP compressor 

blade partial airfoil release events. We are 

issuing this AD to prevent LP compressor 

blade airfoil separations, engine damage, and 

damage to the airplane. 

(e) Actions and Compliance 

Unless already done, do the following 

actions. 

(1) Ultrasonic Inspection (UI) of LP 

Compressor Blade 

(i) After the effective date of this AD, 

ultrasonically inspect each LP compressor 

blade before the blade exceeds 3,600 cycles 

since new (CSN) or before further flight, 

whichever occurs later. Repeat the UI of the 

blade every 2,400 cycles since last inspection 

(CSLI). 

(ii) For any LP compressor blade that 

exceeds 2,200 CSLI on the effective date of 

this AD, inspect the blade before exceeding 

3,000 CSLI or before further flight, whichever 

occurs later. Thereafter, perform the 

repetitive inspections required by this AD. 

(iii) Use paragraph 3, excluding 

subparagraphs 3.A.(9), 3.B.(5), 3.C.(4), 

3.D.(3), 3.E.(5), 3.F.(10), and 3.G.(7), of RR 

Alert Non-Modification Service Bulletin 

(NMSB) RB.211–72–AH465, dated July 15, 

2013, to perform the inspections required by 

this AD. 

(2) Use of Replacement Blades 

LP compressor blades, P/Ns FK23411, 

FK25441, FK25968, FW11901, FW15393, 

FW23643, FW23741, FW23744, KH23403, or 

KH23404, that have accumulated at least 

3,600 CSN or 2,400 CSLI are eligible for 

installation if the blade has passed the UI 

required by this AD. 

(f) Credit for Previous Actions 

If you performed a UI of an affected LP 

compressor blade before the effective date of 

this AD using RR NMSB No. RB.211–72– 

G702, dated May 23, 2011; or RR NMSB No. 

RB.211–72–G872, Revision 2, dated March 8, 

2013, or earlier revisions; or RR NMSB No. 

RB.211–72–H311, dated March 8, 2013; or 

Engine Manual E-Trent-1RR, Task 72–31–11– 

200–806, you have met the initial inspection 

requirements of this AD. However, you must 

still comply with the repetitive 2,400 CSLI 

requirement of this AD. 

(g) 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. 

(h) Related Information 

(1) For more information about this AD, 

contact Robert Green, Aerospace Engineer, 

Engine Certification Office, FAA, Engine & 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: 781–238–7754; fax: 781–238–7199; 

email: Robert.Green@faa.gov. 

(2) Refer to MCAI European Aviation 

Safety Agency AD 2014–0031, dated 

February 4, 2014, for more information. You 

may examine the MCAI in the AD docket on 

the Internet at http://www.regulations.gov/

#!documentDetail;D=FAA-2012-1327-0007. 

(i) 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 plc Alert Non-Modification 

Service Bulletin No. RB.211–72–AH465, 

dated July 15, 2013. 

(ii) Reserved. 

(3) For RR service information identified in 

this AD, contact Rolls-Royce plc, P.O. Box 

31, Derby DE24 8BJ, UK; phone: 44 0 1332 

242424; fax: 44 0 1332 249936. 

(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. 

Issued in Burlington, Massachusetts, on 

August 1, 2014. 

Colleen M. D’Alessandro, 

Assistant Directorate Manager, Engine & 

Propeller Directorate, Aircraft Certification 

Service. 

[FR Doc. 2014–19017 Filed 8–18–14; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2014–0122; Directorate 

Identifier 2014–NM–002–AD; Amendment 

39–17938; AD 2014–16–14] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

The Boeing Company Model 737–600, 

–700, –700C, –800, and –900 series 

airplanes. This AD was prompted by 

reports in which a single, undetected, 

erroneous radio altimeter output caused 

the autothrottle to enter landing flare 

retard mode prematurely on approach. 

This AD requires removing certain 

autothrottle computers and installing a 

new or reworked autothrottle computer. 

We are issuing this AD to prevent a 

single, undetected, erroneous radio 

altimeter output from causing premature 

autothrottle landing flare retard and 

subsequent loss of automatic speed 

control, which could result in loss of 

control of the airplane. 

DATES: This AD is effective September 

23, 2014. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of September 23, 2014. 

ADDRESSES: For service information 

identified in this AD, contact Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, P.O. Box 3707, 

MC 2H–65, Seattle, WA 98124–2207; 

telephone 206–544–5000, extension 1; 

fax 206–766–5680; Internet https://

www.myboeingfleet.com. You may view 

this referenced service information at 

the FAA, Transport Airplane 

Directorate, 1601 Lind Avenue SW., 

Renton, WA 98057. For information on 

the availability of this material at the 

FAA, call 425–227–2112. 

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–2014– 

0122; 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 


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