Federal Register / Vol. 76, No. 136 / Friday, July 15, 2011 / Rules and Regulations 41669 

(2) Hawker Beechcraft Corporation 

Temporary Change to the Pilot’s Operating 

Handbook and FAA Approved Airplane 

Flight Manual, P/N 130–590031–245TC5, 

dated February 2011, approved for IBR 

August 19, 2011. 

(3) For service information identified in 

this AD, contact Hawker Beechcraft 

Corporation, 9709 East Central, Wichita, 

Kansas 67201; telephone: (316) 676–5034; 

fax: (316) 676–6614; Internet: https:// 

www.hawkerbeechcraft.com/service_support/ 

pubs/. 

(4) You may review copies of the 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 also review copies of the 

service information that is incorporated by 

reference at the National Archives and 

Records Administration (NARA). For 

information on the availability of this 

material at an NARA facility, call 202–741– 

6030, or go to http://www.archives.gov/ 

federal_register/code_of_federal_regulations/ 

ibr_locations.html. 

Issued in Kansas City, Missouri, on July 7, 

2011. 

Earl Lawrence, 

Manager, Small Airplane Directorate, Aircraft 

Certification Service. 

[FR Doc. 2011–17567 Filed 7–14–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0139; Directorate 

Identifier 2010–CE–057–AD; Amendment 

39–16743; AD 2011–14–08] 

RIN 2120–AA64 

Airworthiness Directives; B/E 

Aerospace, Continuous Flow 

Passenger Oxygen Mask Assembly, 

Part Numbers 174006–( ), 174080–( ), 

174085–( ), 174095–( ), 174097–( ), 

and 174098–( ) 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for the 

products listed above, except for those 

that are currently affected by similar 

action through any of five ADs 

applicable to Boeing products. This AD 

requires an inspection/records check to 

determine the manufacturer and part 

number of the oxygen mask assemblies 

installed, an inspection to determine the 

manufacturing date and modification 

status if certain oxygen mask assemblies 

are installed, and corrective action for 

certain oxygen mask assemblies. This 

AD was prompted by a report that 

several oxygen mask assemblies with 

broken in-line flow indicators were 

found following a mask deployment. We 

are issuing this AD to prevent the inline flow indicators of the oxygen mask 

assembly from fracturing and 

separating, which could inhibit oxygen 

flow to the masks. This condition could 

consequently result in occupants 

developing hypoxia following a 

depressurization event. 

DATES: This AD is effective August 19, 

2011. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of August 19, 2011. 

ADDRESSES: For service information 

identified in this AD, contact B/E 

Aerospace, 10800 Pflumm Road, 

Lenexa, Kansas 66215; telephone: (913) 

338–9800; fax: (913) 469–8419; Internet: 

http://www.beaerospace.com. You may 

review copies of the referenced 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. 

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: 

David Fairback, Aerospace Engineer, 

Wichita Aircraft Certification Office, 

FAA, 1801 Airport Road, Room 100, 

Wichita, Kansas 67209; telephone: (316) 

946–4154; fax: (316) 946–4107; e-mail: 

david.fairback@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an airworthiness 

directive (AD) that would apply to the 

specified products. That NPRM 

published in the Federal Register on 

February 23, 2011 (76 FR 9984). That 

NPRM proposed to require an 

inspection/records check to determine 

the manufacturer and part number of 

the oxygen mask assemblies installed, 

an inspection to determine the 

manufacturing date and modification 

status if certain oxygen mask assemblies 

are installed, and corrective action for 

certain oxygen mask assemblies. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. The 

following presents the comments 

received on the proposal and the FAA’s 

response to each comment. B/E 

Aerospace supports the NPRM. 

Request To Address Past Production 

Cut Over Point Airplanes 

The Boeing Company (Boeing) stated 

that a statement should be included in 

the final rule AD action to address 

installation of the affected oxygen mask 

assemblies on Boeing airplanes that are 

not included in existing Boeing service 

bulletins because these airplanes are 

past production cut over point. 

Boeing stated that, due to long-time 

lag between production cut over change 

and the release of the AD, there is a high 

likelihood that on Boeing airplanes past 

production cut over point, but prior to 

release of this AD due to lack of 

awareness of the pending AD release, 

operators could have installed one of 

the affected oxygen mask assemblies 

during routine maintenance. The 

Applicability section of the proposed 

AD could mislead operators to not take 

corrective actions on Boeing airplanes 

even if they had unknowingly installed 

affected oxygen mask assemblies on 

airplanes past production cut over prior 

to release of the AD. This could also 

apply to installation of affected oxygen 

mask assemblies on Boeing airplanes 

through supplemental type certificate 

(STC) or through field approval. 

We agree with the commenter. 

However, the unsafe condition on 

Boeing airplanes will be addressed 

separately from this AD. If additional 

action is necessary to address Boeing’s 

concerns, additional rulemaking may be 

taken specific to Boeing airplanes. 

We have not changed the final rule 

AD action based on this comment. 

Request for Applicability Clarification 

Boeing stated that there is confusion 

between the statements in the 

Differences Between the Proposed AD 

and the Service Information section and 

the Applicability section in the 

proposed AD. The statements are 

contradictory and could mislead 

operators. In the proposed AD, it is 

stated in the Differences Between the 

Proposed AD and the Service 

Information section that oxygen mask 

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41670 Federal Register / Vol. 76, No. 136 / Friday, July 15, 2011 / Rules and Regulations 

assemblies affected by AD 2007–26–06, 

AD 2008–08–08, AD 2008–12–05, AD 

2008–13–21, or AD 2010–14–06 are not 

affected by this proposed AD. In the 

Applicability section of the proposed 

AD, it is stated that the AD applies to 

B/E Aerospace, Continuous Flow 

Passenger Oxygen Mask Assembly; Part 

Numbers 174006–( ), 174080–( ), 

174085–( ), 174095–( ), 174097–( ), 

and 174098–( ) as listed in B/E 

Aerospace Service Bulletin 174080–35– 

04, Rev 000, dated September 6, 2010, 

that are installed on any aircraft except 

for those Boeing airplanes specified in 

the ADs referenced in paragraphs (b)(1), 

(b)(2), (b)(3), (b)(4), and (b)(5) of this AD. 

The Differences Between the 

Proposed AD and the Service 

Information section excludes mask 

assemblies by part number from the 

proposed AD if they are included in the 

previously referenced ADs. The 

Applicability section provides relief for 

Boeing airplanes covered by the 

previously referenced ADs. This 

information is contradictory and needs 

to be clarified in the final rule AD 

action. 

We agree with the commenter. The 

statement in the Differences Between 

the Proposed AD and the Service 

Information section is incorrect. The 

template used for preparing final rule 

AD actions does not include the 

Differences Between the Proposed AD 

and the Service Information section, 

which is part of the Discussion section 

and not part of the actual AD. The 

Applicability section in the proposed 

AD is correct. We regret any confusion 

this may have caused. 

We have not changed the final rule 

AD action based on this comment. 

Request To Exclude Certain Airplanes 

From the Applicability Section 

Airbus, jetBlue Airways, and All 

Nippon Airways stated Airbus airplanes 

in compliance with B/E Aerospace 

Service Bulletin 174080–35–02, Rev. 1, 

as specified in European Aviation Safety 

Agency (EASA) AD 2010–0165, dated 

August 5, 2010, should be excluded 

from the applicability of the proposed 

AD. 

The commenters state that this change 

would harmonize the EASA AD with 

the FAA AD and avoid duplicate work. 

We partially agree with the 

commenters. We do not agree to exclude 

Airbus airplanes affected by the EASA 

AD because the EASA AD does not 

include all of the oxygen mask assembly 

part numbers that contain the 

potentially defective in-line flow 

indicators. We do agree that duplicate 

work should be avoided and that credit 

for compliance with the EASA AD 

could be given, but only if it can be 

positively determined that no oxygen 

mask assembly part number listed in 

B/E Aerospace Service Bulletin 174080– 

35–04, Rev 000, dated September 6, 

2010, or listed in EASA AD 2010–0165, 

dated August 5, 2010, is installed by 

STC or alternation. 

We have revised the final rule AD 

action to include a statement in 

paragraph (g)(1) giving conditional 

credit for compliance with the EASA 

AD 2010–0165, dated August 5, 2010, or 

EASA AD 2010–0165R1, correction 

dated January 31, 2011. 

Request To Allow an Additional 

Method of Compliance 

Airbus stated that compliance with 

the final rule AD action should include 

inspection of the oxygen mask assembly 

container for a manufacture date of 

oxygen mask assemblies that were fitted 

at time of production delivery providing 

that no replacement of masks occurred 

up to the effective date of the final rule 

AD action. 

Airbus stated that they received a 

statement from B/E Aerospace stating 

that ‘‘container assemblies that were 

manufactured after March 1, 2006, do 

not contain masks that were 

manufactured before March 1, 2006.’’ 

Airbus confirms that no modification is 

performed on the container assemblies 

and/or subassemblies before aircraft 

delivery. 

We partially agree with the 

commenter. We agree that inspection of 

the oxygen mask assembly container for 

manufacture date is adequate only if it 

can be verified that the original oxygen 

masks in the container assembly are 

installed. We disagree that relying on 

the container assembly manufacture 

date alone addresses the safety concern 

because the masks in the container 

assembly may have been changed after 

it was manufactured. 

We have revised the final rule AD 

action based on this comment to include 

inspection of the container assembly 

date only if it can be positively 

determined that the passenger oxygen 

masks within the container assembly 

have not been modified since it was 

manufactured. 

Request To Change Replacement 

Compliance Time 

Airbus stated that replacement of the 

in-line flow indicator before further 

flight after the inspection would only be 

necessary if, during the physical check 

of the oxygen mask assembly, it is found 

broken. Based on difficulties in getting 

spare parts from the supplier in 

sufficient time, the compliance time for 

modifying the affected oxygen masks 

should be changed to 36 months after 

the effective date of the AD or within 

6,500 hours time-in-service (TIS) after 

the effective date of the AD, whichever 

occurs first. 

We agree with the commenter. 

Changing the compliance time for 

modifying the affected oxygen masks 

will still address the safety concern of 

the unsafe condition identified in the 

proposed AD. 

We have revised the final rule AD 

action to change the replacement/ 

modification compliance time in 

paragraph (h). 

Request To Include Other Oxygen Mask 

Assemblies in the Applicability Section 

BOS Aviation Ltd. stated that the 

Applicability section should also 

include additional in-line flow indicator 

part numbers because faulty in-line flow 

indictors are fitted to more masks than 

identified in B/E Aerospace Service 

Bulletin 174080–35–04, Rev 000, dated 

September 6, 2010. BOS Aviation Ltd. 

stated that some technical 

documentation suggests that a very 

popular series of AVOX oxygen masks 

contain the same in-line flow indicator, 

although it masquerades under AVOX 

part number 804273–01. They also 

stated that examination of the failure 

mode of the suspect in-line flow 

indicator showed that the failure was 

where the two halves are glued together, 

not as was suggested at the ‘‘weak’’ 

sharp molded joint stated in the B/E 

Aerospace service bulletin and other 

communication. 

We do not agree with the commenter. 

AVOX stopped using the B/E Aerospace 

in-line flow indicator in their passenger 

oxygen masks several years before 2002 

when the AVOX part number 804273– 

01 was introduced. The B/E Aerospace 

part number 118023–02 in-line flow 

indicator is not glued; it is welded 

together. The photos provided by BOS 

Aviation Ltd. show that the failure did 

not occur at the weld since the opaque 

material is still bonded to the 

transparent material. 

The FAA issued Special Alert 

Information Bulletin (SAIB) NM–11–25 

to address an issue with AVOX in-line 

flow indicators that is different from the 

B/E Aerospace in-line flow indicators. 

We have not changed the final rule 

AD action based on this comment. 

Request To Include Other In-Line Flow 

Indicators in the Applicability Section 

BOS Aviation Ltd. stated that the 

manufacturer date window be removed 

from the final rule AD action because 

several suspect part number in-line flow 

indicators are in service that were 

manufactured before the January 1, 2002 

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Federal Register / Vol. 76, No. 136 / Friday, July 15, 2011 / Rules and Regulations 41671 

date specified in B/E Aerospace Service 

Bulletin 174080–35–04, Rev 000, dated 

September 6, 2010. BOS Aviation Ltd. 

stated that the date is not carried on the 

in-flow indicator, thereby making it 

difficult to confirm the age of the in-line 

flow indicator regardless of the age of 

the oxygen mask. The same ambiguity 

applies if there has been any repair to 

the unit. 

We do not agree with the commenter. 

Based on the failure data we have, we 

determined that no AD action is 

necessary for other in-line flow 

indicators or for in-line flow indicators 

manufactured before 2002. 

We have not changed the final rule 

AD action based on this comment. 

Request To Show Compliance Through 

Permanent Marking 

BOS Aviation Ltd. requested that the 

personal safety unit (PSU) (as well as 

the actual oxygen mask assembly) be 

marked to show compliance with the 

AD; thereby negating the need to open 

the PSU and drop the oxygen mask 

assembly to confirm compliance in the 

future. 

We partially agree with the 

commenter. We agree that the oxygen 

mask assembly needs to be marked to 

show it has been modified as specified 

in the service bulletin. However, we do 

not agree to require marking of the 

oxygen mask stowage container to show 

compliance with the AD when 

compliance can be confirmed by 

checking the maintenance records. 

We have not changed the final rule 

AD action based on this comment. 

Request To Add Additional Guidance 

BOS Aviation Ltd. stated that the FAA 

should instruct owner/operators to use 

standard maintenance practices when 

doing the actions required in the final 

rule AD action. This should be done for 

a myriad of good reasons that relate 

primarily to safety, none of which goes 

away simply because the maintenance is 

carried out as a result of an AD or a 

service bulletin. 

We partially agree with the 

commenter. We agree that standard 

maintenance practices should always be 

used. Appropriate personnel and 

procedures must be used for the 

inspection and modification required by 

this AD to ensure safety and not create 

additional hazards. We disagree that 

language should be added to the AD to 

emphasize safety when doing actions 

required in an AD. 

We have not changed the final rule 

AD action based on this comment. 

Request To Update Cost of Compliance 

Section 

BOS Aviation Ltd. stated that B/E 

Aerospace has offered to supply 

replacement in-line flow indicators to 

operators free of charge. The FAA 

assessed the cost of compliance based 

on the manpower requirement stated in 

B/E Aerospace Service Bulletin 174080– 

35–04, Rev 000, dated September 6, 

2011, and is grossly underestimated. In 

many applications, the suspect oxygen 

masks are contained in a PSU that is 

live and installed in operational aircraft. 

The proposed AD requires opening and 

disassembling the oxygen mask 

assembly in order to carry out the 

inspection, in addition to modifying any 

defective oxygen mask. To do this task 

safely and following various 

manufacturers’ maintenance 

instructions, the oxygen mask assembly 

should be removed from the aircraft, 

taken to an oxygen clean environment, 

and made safe in preparation for 

maintenance. 

Once open, depending on type, the 

oxygen mask assemblies are tightly 

wrapped with their tube specifically 

coiled and packaged with the in-line 

flow indicator not immediately visible, 

which then requires ‘‘unpacking’’ the 

box that may contain up to four masks. 

The box then requires proper ‘‘repacking’’ before reinstallation and test 

in the aircraft. 

BOS Aviation Ltd. stated that they 

have conducted tests that would suggest 

the accomplishment time (as presented 

in AD 2007–26–06 for example) is 

probably adequate for an aircraft of a 

half or a third the capacity of the 747. 

Moreover, where aircraft PSUs use 

chemical oxygen generators, the issue to 

ensure safety with respect to the oxygen 

generating canister becomes paramount 

and increases the workhours required. 

Our estimate, at the very best, for 

accomplishing the AD on an airplane’s 

set of PSUs on a 150 seat narrow body 

airplane, will require a minimum of 3 

days down time, not including transport 

of the PSUs to a suitable workshop for 

accomplishment of the AD. 

We do not agree with the commenter. 

The cost estimate of $19,400,00 for the 

estimated number of affected oxygen 

mask assemblies is based on the 

following: 

• The cost estimate for the AD 

assumes that all of the 400,000 part 

number in-line flow indicators 

manufactured on or after January 1, 

2002, and before March 1, 2006, are 

replaced for compliance with this AD. 

In reality, most of these in-line flow 

indicators are installed in Boeing and 

Airbus airplanes and will be replaced in 

compliance with the previously 

referenced ADs. The exact number that 

will be replaced in accordance with this 

AD is unknown, but it will be less than 

the estimated 400,000. 

• The cost estimate assumes 30 

minutes are required to do the actions 

required in this AD for each affected 

oxygen mask assembly. This estimate is 

much higher than the 3-minute time 

proposed in B/E Aerospace Service 

Bulletin 174080–35–04, Rev 000, dated 

September 6, 2010. 

• For the oxygen mask assemblies to 

be maintained in an airworthy 

condition, a recurrent inspection for 

each oxygen mask is necessary. The 

6,500-hour TIS/36-month compliance 

time of this AD will allow many 

operators to do the actions required in 

this AD at the same time as the 

recurrent inspection. 

We have not changed the final rule 

AD action based on this comment. 

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 changes described previously 

and minor editorial changes. We have 

determined that these minor changes: 

• Are consistent with the intent that 

was proposed in the NPRM for 

correcting the unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM. 

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 

400,000 oxygen mask assemblies. 

We estimate the following costs to 

comply with this AD: 

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41672 Federal Register / Vol. 76, No. 136 / Friday, July 15, 2011 / Rules and Regulations 

ESTIMATED COSTS

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

operators 

Replace the in-line flow indicator per 

mask.

0.5 work-hour × $85 per hour = $42.50 ... $6.00 $48.50 $19,400,000 

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): 

2011–14–08 B/E Aerospace: Amendment 

39–16743; Docket No. FAA–2011–0139; 

Directorate Identifier 2010–CE–057–AD. 

Effective Date 

(a) This AD is effective August 19, 2011. 

Affected ADs 

(b) None. This AD does not revise or 

supersede any existing ADs. The following 

ADs address the unsafe condition described 

in paragraph (e) of this AD for certain 

installations on certain Boeing airplanes: 

(1) AD 2007–26–06, Amendment 39–15308 

(72 FR 71210, December 17, 2007), for certain 

Boeing Model 747–200B, 747–300, and 747– 

400 series airplanes identified in Boeing 

Service Bulletin 747–35–2119, dated 

November 30, 2006; 

(2) AD 2008–08–08, Amendment 39–15460 

(73 FR 19982, April 14, 2008), for certain 

Boeing Model 757–200, 757–200CB, 757– 

200PF, and 757–300 series airplanes 

identified in Boeing Special Attention 

Service Bulletin 757–35–0028, dated April 9, 

2007; 

(3) AD 2008–12–05, Amendment 39–15548 

(73 FR 32996, June 11, 2008), for certain 

Boeing Model 777–200, 777–200LR, 777–300, 

and 777–300ER series airplanes identified in 

Boeing Special Attention Service Bulletin 

777–35–0019, dated March 9, 2006; 

(4) AD 2008–13–21, Amendment 39–15584 

(73 FR 37781, July 2, 2008), for certain 

Boeing Model 767–200, 767–300, and 767– 

400ER series airplanes identified in Boeing 

Special Attention Service Bulletin 767–35– 

0054, dated July 6, 2006; and 

(5) AD 2010–14–06, Amendment 39–16351 

(75 FR 38014, July 1, 2010), for certain The 

Boeing Company Model 737–200, 737–300, 

737–400, and 737–500 series airplanes 

identified in Boeing Special Attention 

Service Bulletin 737–35–1099, Revision 1, 

dated April 23, 2009. 

Applicability 

(c) This AD applies to B/E Aerospace, 

Continuous Flow Passenger Oxygen Mask 

Assembly; Part Numbers 174006–( ), 

174080–( ), 174085–( ), 174095–( ), 174097– 

( ), and 174098–( ) as listed in B/E 

Aerospace Service Bulletin 174080–35–04, 

Rev 000, dated September 6, 2010, that are 

installed on any aircraft except for those 

Boeing airplanes specified in the ADs 

referenced in paragraphs (b)(1), (b)(2), (b)(3), 

(b)(4), and (b)(5) of this AD. 

Note 1: The service bulletin lists the part 

numbers with a suffix of ‘‘XX.’’ The TSO 

Index lists the part numbers with the suffix 

of ‘‘( ).’’ For the purposes of this AD, we 

have used ‘‘( ).’’ 

Subject 

(d) Joint Aircraft System Component 

(JASC)/Air Transport Association (ATA) of 

America Code 35: Oxygen. 

Unsafe Condition 

(e) This AD was prompted by a report that 

several oxygen mask assemblies with broken 

in-line flow indicators were found following 

a mask deployment. We are issuing this AD 

to prevent the in-line flow indicators of the 

oxygen mask assembly from fracturing and 

separating, which could inhibit oxygen flow 

to the masks. This condition could 

consequently result in occupants developing 

hypoxia following a depressurization event. 

Compliance 

(f) Comply with this AD within the 

compliance times specified, unless already 

done. 

Records Check/Inspection 

(g) Within 36 months after August 19, 2011 

(the effective date of this AD) or within 6,500 

hours time-in-service (TIS) after August 19, 

2011 (the effective date of this AD), 

whichever occurs first, do the following: 

(1) Do a records check to determine if any 

oxygen mask assembly part number listed in 

B/E Aerospace Service Bulletin 174080–35– 

04, Rev 000, dated September 6, 2010, is 

installed in the aircraft. 

(i) If you cannot positively determine the 

manufacturer and part number of any oxygen 

mask assembly installed, do a general visual 

inspection to determine if any oxygen mask 

assembly part number listed in B/E 

Aerospace Service Bulletin 174080–35–04, 

Rev. 000, dated September 6, 2010, is 

installed in the aircraft. 

(ii) If you can positively determine that no 

oxygen mask assembly part number listed in 

B/E Aerospace Service Bulletin 174080–35– 

04, Rev 000, dated September 6, 2010, is 

installed, no further action is required by this 

AD. 

(iii) If you can positively determine that 

any Airbus airplane affected by this AD is in 

compliance with European Aviation Safety 

Agency (EASA) AD 2010–0165, dated August 

5, 2010, or EASA AD 2010–0165R1, 

correction dated January 31, 2011, and that 

no oxygen mask assembly part number listed 

in B/E Aerospace Service Bulletin 174080– 

35–04, Rev 000, dated September 6, 2010 is 

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Federal Register / Vol. 76, No. 136 / Friday, July 15, 2011 / Rules and Regulations 41673 

installed by STC or alteration, no further 

action is required by this AD. 

(iv) If you can positively determine 

through inspection of the oxygen mask 

container assembly that the date of 

manufacture is after March 1, 2006, and you 

can verify that the original oxygen masks in 

the container assembly are installed, no 

further action is required by this AD. 

(2) If, as a result of any of the records 

checks/inspections required in paragraph 

(g)(1) of this AD, you determine that an 

oxygen mask assembly part number listed in 

B/E Aerospace Service Bulletin 174080–35– 

04, Rev 000, dated September 6, 2010, is 

installed, inspect the oxygen mask assembly 

to determine if the in-line flow indicator 

must be replaced following paragraph II.A. of 

B/E Aerospace Service Bulletin 174080–35– 

04, Rev 000, dated September 6, 2010. If you 

can positively determine that the in-line flow 

indicator does not require replacement, no 

further action is required by this AD. 

Modification/Replacement 

(h) After the inspection in paragraph (g)(2) 

of this AD and it was determined the in-line 

flow indicator must be replaced, within 36 

months after August 19, 2011 (the effective 

date of this AD) or within 6,500 hours TIS 

after August 19, 2011 (the effective date of 

this AD), whichever occurs first, modify the 

oxygen mask assembly by replacing the inline flow indicator following B/E Aerospace 

Service Bulletin 174080–35–04, Rev 000, 

dated September 6, 2010. As an alternative to 

modifying the oxygen mask assembly, you 

may replace the oxygen mask assembly with 

an airworthy oxygen mask assembly FAAapproved for installation on the aircraft. 

Parts Installation 

(i) As of August 19, 2011 (the effective date 

of this AD), do not install a B/E Aerospace 

oxygen mask having a part number listed in 

B/E Aerospace Service Bulletin 174080–35– 

04, Rev 000, dated September 6, 2010, with 

a manufacturing date on or after January 1, 

2002, and before March 1, 2006, on any 

aircraft, unless it has been modified 

following the requirements of paragraph (h) 

of this AD. 

Alternative Methods of Compliance 

(AMOCs) 

(j)(1) The Manager, Wichita 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. 

(2) Before using any approved AMOC, 

notify your Principal Maintenance Inspector 

or Principal Avionics Inspector, as 

appropriate, or lacking a principal inspector, 

your local Flight Standards District Office. 

Related Information 

(k) For more information about this AD, 

contact David Fairback, Aerospace Engineer, 

Wichita ACO, FAA, 1801 Airport Road, 

Room 100, Wichita, Kansas 67209; telephone: 

(316) 946–4154; fax: (316) 946–4107; e-mail: 

david.fairback@faa.gov. 

(l) For service information identified in 

this AD, contact B/E Aerospace, 10800 

Pflumm Road, Lenexa, Kansas 66215; 

telephone: (913) 338–9800; fax: (913) 469– 

8419; Internet: http://www.beaerospace.com. 

You may review copies of the referenced 

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. 

Material Incorporated by Reference 

(m) You must use B/E Aerospace Service 

Bulletin 174080–35–04, Rev 000, dated 

September 6, 2010, to do the actions required 

by this AD, unless the AD specifies 

otherwise. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

the service information under 5 U.S.C. 552(a) 

and 1 CFR part 51. 

(2) For service information identified in 

this AD, contact B/E Aerospace, 10800 

Pflumm Road, Lenexa, Kansas 66215; 

telephone: (913) 338–9800; fax: (913) 469– 

8419; Internet: http://www.beaerospace.com. 

(3) You may review copies of the 

referenced 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. 

(4) You may also review copies of the 

service information that is incorporated by 

reference at the National Archives and 

Records Administration (NARA). For 

information on the availability of this 

material at an NARA facility, call 202–741– 

6030, or go to http://www.archives.gov/ 

federal_register/code_of_federal_regulations/ 

ibr_locations.html. 

Issued in Kansas City, Missouri, on July 1, 

2011. 

Earl Lawrence, 

Manager, Small Airplane Directorate, Aircraft 

Certification Service. 

[FR Doc. 2011–17205 Filed 7–14–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–1159; Directorate 

Identifier 2010–NM–006–AD; Amendment 

39–16746; AD 2011–14–11] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Model 747–400 and –400D 

Series Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for the 

products listed above. This AD requires 

a general visual inspection to determine 

the routing of the wire bundles in the 

number two and number three engine 

pylons near the leading edge, and 

related investigative and corrective 

actions if necessary. For certain 

airplanes, this AD also requires certain 

concurrent actions. This AD was 

prompted by a report of a fuel leak from 

the main fuel feed tube at the number 

two engine pylon. We are issuing this 

AD to detect and correct chafing of the 

main fuel feed tube and the alternating 

current motor-driven hydraulic pump 

wire bundle, which could lead to arcing 

from the exposed wire to the fuel feed 

tube, and could result in a fire or 

explosion. 

DATES: This AD is effective August 19, 

2011. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of August 19, 2011. 

ADDRESSES: For service information 

identified in this AD, contact Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, P.O. Box 3707, 

MC 2H–65, Seattle, Washington 98124– 

2207; telephone 206–544–5000, 

extension 1; fax 206–766–5680; e-mail 

me.boecom@boeing.com; Internet 

https://www.myboeingfleet.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: 

Tung Tran, Aerospace Engineer, 

Propulsion Branch, ANM–140S, FAA, 

Seattle Aircraft Certification Office, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; phone: 425– 

917–6505; fax: 425–917–6590; e-mail: 

tung.tran@faa.gov. 

SUPPLEMENTARY INFORMATION: 

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