22178 Federal Register / Vol. 78, No. 72 / Monday, April 15, 2013 / Rules and Regulations 

eas@airbus.com; Internet http:// 

www.airbus.com. 

(m) 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. 

(3) The following service information was 

approved for IBR on May 20, 2013. 

(i) Airbus Mandatory Service Bulletin 

A320–25–1294, Revision 06, dated July 23, 

2010. 

(ii) Reserved. 

(4) The following service information was 

approved for IBR on of April 12, 2007 (72 FR 

10348, March 8, 2007). 

(i) Airbus Service Bulletin A320–25–1294, 

Revision 02, dated September 5, 2006. 

(ii) Reserved. 

(5) For service information identified in 

this AD, contact Airbus SAS—EIAS 

(Airworthiness Office), 1 Rond Point Maurice 

Bellonte, 31707 Blagnac Cedex, France; 

telephone +33 5 61 93 36 96; fax +33 5 61 

93 44 51; email account.airwortheas@airbus.com; Internet http:// 

www.airbus.com. 

(6) You may review copies of the 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. 

(7) 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 Renton, Washington, on March 

28, 2013. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2013–08570 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–2010–1042; Directorate 

Identifier 2010–NM–094–AD; Amendment 

39–17413; AD 2013–07–09] 

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 737–700, 

–700C, –800, and –900ER series 

airplanes, Model 747–400F series 

airplanes, and Model 767–200 and –300 

series airplanes. This AD was prompted 

by reports indicating that certain crew 

oxygen mask stowage box units were 

possibly delivered with a burr in the 

inlet fitting. The burr might break loose 

during test or operation, and might pose 

an ignition source or cause an inlet 

valve to jam. This final rule adds a step 

to identify and label certain crew 

oxygen mask stowage box units that 

have already been inspected and 

reworked by the supplier, and allows 

operators to install new or serviceable 

crew oxygen mask stowage box units, 

and requires a general visual inspection 

for affected serial numbers of the crew 

oxygen mask stowage box units, and 

replacement or re-identification as 

necessary. We are issuing this AD to 

prevent an ignition source, which could 

result in an oxygen-fed fire; or an inlet 

valve jam in a crew oxygen mask 

stowage box unit, which could result in 

restricted flow of oxygen. 

DATES: This AD is effective May 20, 

2013. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of May 20, 2013. 

ADDRESSES: For Boeing 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. For 

Intertechnique service information 

identified in this AD, contact Zodiac, 2, 

rue Maurice Mallet—92137 Issy-lesMoulineaux Cedex France; telephone 

+33 1 41 23 23 23; fax +33 1 46 48 83 

87; Internet http://www.zodiac.com. 

You may review copies of the 

referenced service information at the 

FAA, Transport Airplane Directorate, 

1601 Lind Avenue SW., Renton, 

Washington. For information on the 

availability of this material at the FAA, 

call 425–227–1221. 

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: 

Susan L. Monroe, Aerospace Engineer, 

Cabin Safety and Environmental 

Systems Branch, ANM–150S, FAA, 

Seattle Aircraft Certification Office 

(ACO), 1601 Lind Avenue SW., Renton, 

Washington 98057–3356; phone: 425– 

917–6457; fax: 425–917–6590; email: 

susan.l.monroe@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a supplemental notice of 

proposed rulemaking (SNPRM) to 

amend 14 CFR part 39 to include an 

airworthiness directive (AD) that would 

apply to the specified products. That 

SNPRM published in the Federal 

Register on September 7, 2012 (77 FR 

55159). The original NPRM (75 FR 

67637, November 3, 2010) proposed to 

require an inspection for affected serial 

numbers of the crew oxygen mask 

stowage box units; and replacement of 

the crew oxygen mask stowage box unit 

with a new crew oxygen mask stowage 

box unit, if necessary. The SNPRM 

proposed to revise the NPRM by adding 

a step to identify and label certain crew 

oxygen mask stowage box units that 

have already been inspected and 

reworked by the supplier, and allowing 

operators to install new or serviceable 

crew oxygen mask stowage box units. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. The 

following presents the comments 

received on the proposal (77 FR 55159, 

September 7, 2012) and the FAA’s 

response to each comment. 

Support for the SNPRM (77 FR 55159, 

September 7, 2012) 

Boeing stated that it supports the 

SNPRM (77 FR 55159, September 7, 

2012). 

Request for Clarification of 

Determination of the Affected Units 

American Airlines (AA) requested 

that we revise the SNPRM (77 FR 55159, 

September 7, 2012) to clarify the 

method used by the manufacturer to 

determine the affected units, and the 

potential that those units could have 

been inadvertently installed on other 

airplanes. AA explained that Boeing 

Alert Service Bulletin 737–35A1121, 

dated December 14, 2009, provides 

limited background information as to 

how Boeing determined which aircraft 

mstockstill on DSK4VPTVN1PROD with RULES

Federal Register / Vol. 78, No. 72 / Monday, April 15, 2013 / Rules and Regulations 22179 

had defective crew oxygen mask 

stowage box units installed, and how 

operators could ensure that those 

affected crew oxygen mask stowage box 

units had not been inadvertently 

reinstalled on other airplanes. AA 

reasoned that the affected crew oxygen 

mask stowage box unit (MXP147–X) is 

installed on multiple fleets that are 

operated by AA, and at times, these 

crew oxygen mask stowage box units are 

loaned between other operators. 

We agree that clarification is 

necessary. Therefore, the Seattle ACO is 

evaluating the associated risk to 

airplanes outside the applicability of 

this AD, and the need for additional 

action. We might consider further 

rulemaking to address our findings. 

Since it is not in the interest of public 

safety to further delay this action, no 

changes have been made to this AD 

regarding this issue at this time. 

Clarification of Paragraph (g)(3) of This 

AD 

We have clarified paragraph (g)(3) of 

this AD by specifying that the 

reinstallation is not required if a records 

review was done to determine the serial 

number of the crew oxygen stowage box 

unit. 

Conclusion 

We reviewed the relevant data, 

considered the comments received, and 

determined that air safety and the 

public interest require adopting the AD 

with the change described previously— 

and minor editorial changes. We have 

determined that these minor changes: 

• Are consistent with the intent that 

was proposed in the SNPRM (77 FR 

55159, September 7, 2012) for correcting 

the unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the SNPRM (77 FR 55159, 

September 7, 2012). 

We also determined that these 

changes will not increase the economic 

burden on any operator or increase the 

scope of the AD. 

Costs of Compliance 

We estimate that this AD affects 40 

airplanes of U.S. registry. 

We estimate the following costs to 

comply with this AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per product Cost on U.S. 

operators 

Inspection ......... 1 work-hour × $85 per hour = $85 ................................................ None ................. $85 $3,400 

We have received no definitive data 

that would enable us to provide cost 

estimates for the on-condition actions 

specified in this AD. 

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, 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): 

2013–07–09 The Boeing Company: 

Amendment 39–17413 ; Docket No. 

FAA–2010–1042; Directorate Identifier 

2010–NM–094–AD. 

(a) Effective Date 

This AD is effective May 20, 2013. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to The Boeing Company 

airplanes, certificated in any category, as 

identified in paragraphs (c)(1), (c)(2), and 

(c)(3) of this AD. 

(1) Model 737–700, –700C, –800, and 

–900ER series airplanes, as identified in 

Boeing Alert Service Bulletin 737–35A1121, 

Revision 1, dated November 7, 2011. 

(2) Model 747–400F series airplanes, as 

identified in Boeing Alert Service Bulletin 

747–35A2126, Revision 1, dated September 

29, 2011. 

(3) Model 767–200 and –300 series 

airplanes, as identified in Boeing Alert 

Service Bulletin 767–35A0057, Revision 1, 

dated November 17, 2011. 

(d) Subject 

Joint Aircraft System Component (JASC)/ 

Air Transport Association (ATA) of America 

Code 35, Oxygen. 

(e) Unsafe Condition 

This AD was prompted by reports 

indicating that certain crew oxygen mask 

stowage box units were possibly delivered 

with a burr in the inlet fitting. The burr might 

break loose during test or operation, and 

might pose an ignition source or cause an 

inlet valve to jam. We are issuing this AD to 

prevent an ignition source, which could 

result in an oxygen–fed fire; or an inlet valve 

jam in a crew oxygen mask stowage box unit, 

which could result in restricted flow of 

oxygen. 

mstockstill on DSK4VPTVN1PROD with RULES

22180 Federal Register / Vol. 78, No. 72 / Monday, April 15, 2013 / Rules and Regulations 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspection and Corrective Action 

Within 24 months after the effective date 

of this AD: Do a general visual inspection to 

determine if the serial number of the crew 

oxygen mask stowage box unit is identified 

in the Appendix of Intertechnique Service 

Bulletin MXP1/4–35–175, 

Revision 2, dated May 10, 2011, in 

accordance with the Accomplishment 

Instructions of the applicable Boeing alert 

service bulletin specified in paragraph (c)(1), 

(c)(2), or (c)(3) of this AD. A review of 

airplane maintenance records is acceptable in 

lieu of this inspection if the serial number of 

the crew oxygen mask stowage box unit can 

be conclusively determined from that review. 

(1) If any crew oxygen mask stowage box 

unit has a serial number identified in table 

1 of the Appendix of Intertechnique Service 

Bulletin MXP1/4–35–175, Revision 2, dated 

May 10, 2011: Before further flight, replace 

the crew oxygen mask stowage box unit with 

a new or serviceable unit, in accordance with 

the Accomplishment Instructions of the 

applicable Boeing alert service bulletin 

specified in paragraph (c)(1), (c)(2), or (c)(3) 

of this AD. 

(2) If any crew oxygen mask stowage box 

unit has a serial number identified in table 

2 of the Appendix of Intertechnique Service 

Bulletin MXP1/4–35–175, Revision 2, dated 

May 10, 2011: Before further flight, add the 

letter ‘‘I’’ to the end of the serial number 

(identified as ‘‘SER’’) on the identification 

label, in accordance with the 

Accomplishment Instructions of 

Intertechnique Service Bulletin MXP1/4–35– 

175, Revision 2, dated May 10, 2011; and 

reinstall in accordance with the 

Accomplishment Instructions of the 

applicable Boeing alert service bulletin 

specified in paragraph (c)(1), (c)(2), or (c)(3) 

of this AD. 

(3) If no crew oxygen mask stowage box 

unit has a serial number identified in the 

Appendix of Intertechnique Service Bulletin 

MXP1/4–35–175, Revision 2, dated May 10, 

2011: Unless a records review was done to 

determine the serial number, before further 

flight, reinstall the crew oxygen mask 

stowage box unit, in accordance with the 

Accomplishment Instructions of the 

applicable Boeing alert service bulletin 

specified in paragraph (c)(1), (c)(2), or (c)(3) 

of this AD. 

(h) Parts Installation Prohibition 

As of the effective date of this AD, no 

person may install a crew oxygen mask 

stowage box unit with a serial number listed 

in the Appendix of Intertechnique Service 

Bulletin MXP1/4–35–175, Revision 2, dated 

May 10, 2011, on any airplane. 

(i) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Seattle Aircraft 

Certification Office (ACO), FAA, has the 

authority to approve AMOCs for this AD, if 

requested using the procedures found in 14 

CFR 39.19. In accordance with 14 CFR 39.19, 

send your request to your principal inspector 

or local Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the ACO, send it to the 

attention of the person identified in the 

Related Information section of this AD. 

Information may be emailed to: 9-ANMSeattle-ACO-AMOC-Requests@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(j) Related Information 

For more information about this AD, 

contact Susan L. Monroe, Aerospace 

Engineer, Cabin Safety and Environmental 

Systems Branch, ANM–150S, FAA, Seattle 

Aircraft Certification Office (ACO), 1601 Lind 

Avenue SW., Renton, Washington 98057– 

3356; phone: 425–917–6457; fax: 425–917– 

6590; email: susan.l.monroe@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) Boeing Alert Service Bulletin 737– 

35A1121, Revision 1, dated November 7, 

2011. 

(ii) Boeing Alert Service Bulletin 747– 

35A2126, Revision 1, dated September 29, 

2011. 

(iii) Boeing Alert Service Bulletin 767– 

35A0057, Revision 1, dated November 17, 

2011. 

(iv) Intertechnique Service Bulletin MXP1/ 

4–35–175, Revision 2, dated May 10, 2011. 

(3) For Boeing 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. For Intertechnique 

service information identified in this AD, 

contact Zodiac, 2, rue Maurice Mallet—92137 

Issy-les-Moulineaux Cedex, France; 

telephone +33 1 41 23 23 23; fax +33 1 46 

48 83 87; Internet http://www.zodiac.com. 

(4) You may view this service information 

at FAA, Transport Airplane Directorate, 1601 

Lind Avenue SW., Renton, Washington. For 

information on the availability of this 

material at the FAA, call 425–227–1221. 

(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 Renton, Washington, on March 

29, 2013. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2013–08192 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–2013–0196; Directorate 

Identifier 2013–NE–03–AD; Amendment 39– 

17376; AD 2013–05–04] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

plc Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Rolls-Royce plc (RR) RB211-Trent 970– 

84, RB211-Trent 970B–84, RB211-Trent 

972–84, RB211-Trent 972B–84, RB211- 

Trent 977–84, RB211-Trent 977B–84, 

and RB211-Trent 980–84 turbofan 

engines. This AD requires inspection of 

the intermediate pressure compressor 

rear stub shaft (IPC RSS) piston ring. 

This AD was prompted by the failure of 

an oil pump drive shear neck due to a 

piston ring seal that was not seated 

properly in the IPC RSS groove. We are 

issuing this AD to prevent failure of the 

oil pump drive shear neck, which could 

result in loss of oil pressure in one or 

more engines and reduced control of the 

airplane. 

DATES: This AD becomes effective April 

30, 2013. 

We must receive comments on this 

AD by May 30, 2013. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of April 30, 2013. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov and follow 

the instructions for sending your 

comments electronically. 

• Mail: U.S. Department of 

Transportation, 1200 New Jersey 

Avenue SE., West Building Ground 

Floor, Room W12–140, Washington, DC 

20590–0001. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

mstockstill on DSK4VPTVN1PROD with RULES