38014 Federal Register / Vol. 75, No. 126 / Thursday, July 1, 2010 / Rules and Regulations 

Note 2: In Hamilton Sundstrand Service 

Bulletin ERPS10AG–24–3, the fluorescent 

penetrant inspection is referred to as a 

‘‘penetrant check.’’ 

(4) As of the effective date of this AD, for 

airplanes on which the inspection required 

by paragraph (f)(2) of this AD has been done 

and on which a scheduled ADG operational 

test is performed: Before further flight after 

each test, do a fluorescent penetrant 

inspection of the ADG strut for cracks, and 

replace the ADG if any crack is found, in 

accordance with paragraphs 2.A., 2.C., and 

2.D. of the Accomplishment Instructions in 

Bombardier Alert Service Bulletin A604–24– 

017, Revision 01, dated January 15, 2007. If 

the ADG is replaced by an ADG with part 

number 604–90800–23 (Hamilton 

Sundstrand part number 1711405), no further 

action is required by this paragraph. 

(5) As of the effective date of this AD, for 

airplanes identified in paragraph 

(f)(1)(ii)(C)(1) of this AD on which an 

unscheduled in-flight ADG deployment 

occurs: Before further flight after each 

deployment, do a general visual inspection of 

the ADG strut for cracks, and replace the 

ADG if any crack is found, in accordance 

with paragraphs 2.A., 2.B., and 2.D. of the 

Accomplishment Instructions in Bombardier 

Alert Service Bulletin A604–24–017, 

Revision 01, dated January 15, 2007. [If the 

ADG is replaced by an ADG with part 

number 604–90800–23 (Hamilton 

Sundstrand part number 1711405), no further 

action is required by this paragraph.] The 

general visual inspection required by this 

paragraph is not required if the fluorescent 

penetrant inspection required by paragraph 

(f)(6) of this AD is performed before further 

flight. 

(6) For airplanes identified in paragraph 

(f)(1)(ii)(C)(1) of this AD on which an 

unscheduled in-flight ADG deployment 

occurs: Within 3 days or 10 hours time-inservice, whichever comes first, after each 

deployment, perform a fluorescent penetrant 

inspection of the ADG strut, and replace the 

ADG, as applicable, in accordance with 

paragraphs 2.A., 2.C., and 2.D. of the 

Accomplishment Instructions in Bombardier 

Alert Service Bulletin A604–24–017, 

Revision 01, dated January 15, 2007. If the 

ADG is replaced by an ADG with part 

number 604–90800–23 (Hamilton 

Sundstrand part number 1711405), no further 

action is required by this paragraph. 

(7) For airplanes identified in paragraph 

(f)(1)(ii)(C)(1) of this AD on which an 

unscheduled on-ground ADG deployment 

task is done: Before further flight after each 

deployment, do a general visual inspection of 

the ADG strut for cracks, and replace the 

ADG if any crack is found, in accordance 

with paragraphs 2.A., 2.B., and 2.D. of the 

Accomplishment Instructions in Bombardier 

Alert Service Bulletin A604–24–017, 

Revision 01, dated January 15, 2007. If the 

ADG is replaced by an ADG with part 

number 604–90800–23 (Hamilton 

Sundstrand part number 1711405), no further 

action is required by this paragraph. 

(8) For airplanes identified in paragraphs 

(f)(1)(ii)(A), (f)(1)(ii)(B), and (f)(1)(ii)(C)(2) of 

this AD: Within 400 flight hours after the 

effective date of this AD, re-identify the ADG, 

in accordance with the Accomplishment 

Instructions in Bombardier Service Bulletin 

604–24–019, dated October 1, 2007. 

Following re-identification, no further action 

is required by this paragraph. 

Note 3: Paragraph (f)(8) of this AD is 

applicable only if required by paragraph 

(f)(1)(ii)(A), (f)(1)(ii)(B), or (f)(1)(ii)(C)(2) of 

this AD. The strut wall thickness of the ADGs 

specified in these paragraphs is not below 

specification. 

(9) As of the effective date of this AD, no 

person may install an ADG having part 

number 604–90800–1, –17, or –19 (Hamilton 

Sundstrand part number in the 761339 

series) on any airplane if the serial number 

of the ADG is in the range 0101 through 1999 

strut and the serial number of the generator 

housing assembly is in the range 0001 

through 2503. 

Note 4: The Bombardier CL–604 Illustrated 

Parts Catalog specifies that, for an ADG with 

a Hamilton Sundstrand part number in the 

761339 series, future procurement is to be an 

ADG with Hamilton Sundstrand part number 

1711405. 

(10) Although Bombardier Alert Service 

Bulletin A604–24–017, Revision 01, dated 

January 15, 2007; and Service Bulletin 604– 

24–019, dated October 1, 2007; specify 

submitting certain information to the 

manufacturer, this AD does not require that 

submission. 

FAA AD Differences 

Note 5: This AD differs from the MCAI 

and/or service information as follows: 

Although the MCAI or service information 

tells you to submit information to the 

manufacturer, paragraph (f)(10) of this AD 

specifies that such submittal is not required. 

Other FAA AD Provisions 

(g) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York 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. Send information to ATTN: 

Program Manager, Continued Operational 

Safety, FAA, New York ACO, 1600 Stewart 

Avenue, Suite 410, Westbury, New York 

11590; telephone (516) 228–7300; fax (516) 

794–5531. Before using any approved AMOC 

on any airplane to which the AMOC applies, 

notify your principal maintenance inspector 

(PMI) or principal avionics inspector (PAI), 

as appropriate, or lacking a principal 

inspector, your local Flight Standards District 

Office. The AMOC approval letter must 

specifically reference this AD. 

(2) Airworthy Product: For any requirement 

in this AD to obtain corrective actions from 

a manufacturer or other source, use these 

actions if they are FAA-approved. Corrective 

actions are considered FAA-approved if they 

are approved by the State of Design Authority 

(or their delegated agent). You are required 

to assure the product is airworthy before it 

is returned to service. 

Related Information 

(h) Refer to MCAI Canadian Airworthiness 

Directive CF–2009–24, dated May 19, 2009; 

Bombardier Alert Service Bulletin A604–24– 

017, Revision 01, dated January 15, 2007; and 

Bombardier Service Bulletin 604–24–019, 

dated October 1, 2007; for related 

information. 

Material Incorporated by Reference 

(i) You must use Bombardier Alert Service 

Bulletin A604–24–017, Revision 01, dated 

January 15, 2007; and Bombardier Service 

Bulletin 604–24–019, dated October 1, 2007; 

as applicable; 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 

this service information under 5 U.S.C. 

552(a) and 1 CFR part 51. 

(2) For service information identified in 

this AD, contact Bombardier, Inc., 400 CoˆteVertu Road West, Dorval, Que ́bec H4S 1Y9, 

Canada; telephone 514–855–5000; fax 

514–855–7401; e-mail 

thd.crj@aero.bombardier.com; Internet http:// 

www.bombardier.com. 

(3) You may review copies of the 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. 

(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 NARA, call 202–741–6030, or go 

to: http://www.archives.gov/federal_register/ 

code_of_federal_regulations/ 

ibr_locations.html. 

Issued in Renton, Washington, on June 17, 

2010. 

Robert D. Breneman, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2010–15818 Filed 6–30–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2009–1224; Directorate 

Identifier 2009–NM–118–AD; Amendment 

39–16351; AD 2010–14–06] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Model 737–200, –300, –400, 

and –500 Series Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is superseding an 

existing airworthiness directive (AD), 

which applies to certain Model 737– 

300, –400, and –500 series airplanes. 

That AD currently requires an 

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Federal Register / Vol. 75, No. 126 / Thursday, July 1, 2010 / Rules and Regulations 38015 

inspection to determine the 

manufacturer and manufacture date of 

the oxygen masks in the passenger 

service unit and the lavatory and 

attendant box assemblies, corrective 

action if necessary, and other specified 

action. This new AD expands the 

applicability in the existing AD. This 

AD results from a determination 

indicating that additional airplanes may 

be subject to the identified unsafe 

condition. We are issuing this AD to 

prevent the in-line flow indicators of the 

passenger oxygen masks from fracturing 

and separating, which could inhibit 

oxygen flow to the masks and 

consequently result in exposure of the 

passengers and cabin attendants to 

hypoxia following a depressurization 

event. 

DATES: This AD becomes effective 

August 5, 2010. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of August 5, 2010. 

On April 23, 2008 (73 FR 14666, 

March 19, 2008), the Director of the 

Federal Register approved the 

incorporation by reference of a certain 

other publication listed in the AD. 

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. 

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 (telephone 800–647–5527) 

is the 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: 

Nicholas Wilson, Aerospace Engineer, 

Cabin Safety and Environmental 

Systems Branch, ANM–150S, FAA, 

Seattle Aircraft Certification Office, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 917–6476; fax (425) 917–6590. 

SUPPLEMENTARY INFORMATION: 

Discussion 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an AD that 

supersedes AD 2008–06–24, 

Amendment 39–15436 (73 FR 14666, 

March 19, 2008). The existing AD 

applies to certain Model 737 –300, –400, 

and –500 series airplanes. That NPRM 

was published in the Federal Register 

on December 30, 2009 (74 FR 69040). 

That NPRM proposed to continue to 

require an inspection to determine the 

manufacturer and manufacture date of 

the oxygen masks in the passenger 

service unit and the lavatory and 

attendant box assemblies, corrective 

action if necessary, and other specified 

action. That NPRM also proposed to add 

airplanes to the applicability. 

Comments 

We provided the public the 

opportunity to participate in the 

development of this AD. We have 

considered the comments that have 

been received on the NPRM. 

Support for the NPRM 

The Boeing Company concurs with 

the content of the NPRM. 

Request To Issue Separate Rulemaking 

Action for Added Airplanes 

All Nippon Airways (ANA) asks that 

we issue a separate AD for Model 737– 

200 airplanes only. ANA understands 

the necessity of expanding the airplane 

effectivity, but notes that the 

requirements in the existing AD clearly 

target Model 737 –300, –400, and –500 

series airplanes. ANA states that a 

separate AD would avoid unnecessary 

paperwork for issuance of a new AD 

that includes Model 737–300, –400, and 

–500 series airplanes. ANA adds that we 

already approved Boeing Special 

Attention Service Bulletin 737–35– 

1099, Revision 1, dated April 23, 2009, 

which refers to B/E Aerospace Service 

Bulletin 174080–35–01, dated February 

6, 2006; Revision 1, dated May 1, 2006; 

and Revision 2, dated May 28, 2008; as 

additional sources of guidance for 

modifying the oxygen mask assembly by 

replacing the flow indicator with an 

improved flow indicator. ANA 

concludes that the compliance time and 

requirements for the airplanes in the 

existing AD have not changed in the 

NPRM. 

We do not agree with the commenter’s 

request to issue a separate AD to address 

only Model 737–200 airplanes. As 

discussed in the NPRM, we reviewed 

Boeing Special Attention Service 

Bulletin 737–35–1099, Revision 1, dated 

April 23, 2009, which was issued after 

the existing AD was published and 

expanded the effectivity of Boeing 

Special Attention Service Bulletin 737– 

35–1099, dated April 9, 2007. (We cited 

Boeing Special Attention Service 

Bulletin 737–35–1099, dated April 9, 

2007, in the existing AD as the 

appropriate source of service 

information for accomplishing the 

required actions.) In light of this new 

service information, we determined that 

the additional airplanes included in the 

effectivity of Boeing Special Attention 

Service Bulletin 737–35–1099, Revision 

1, dated April 23, 2009, also are subject 

to the unsafe condition identified in the 

existing AD. 

When we find that additional 

airplanes must be added to the 

applicability of an AD, the existing AD 

is typically superseded to include those 

airplanes. In addition, we consider that 

any further delay in issuing separate 

rulemaking would result in an 

unacceptable level of risk because doing 

so would allow the unsafe condition to 

continue for an indefinite length of 

time. Therefore, we have not changed 

the AD in this regard. 

Request To Review Manufacturing Date 

Range of Affected Oxygen Masks and 

Issue Additional Rulemaking 

The Civil Aviation Safety Authority of 

Australia suggests that we issue 

additional rulemaking to cover all 

airplanes that may have the affected B/ 

E Aerospace oxygen mask flow indicator 

assemblies installed. The Civil Aviation 

Safety Authority asks that we review the 

manufacturing date range of the oxygen 

masks identified in the NPRM. The Civil 

Aviation Safety Authority states that 

data gathered from its service difficulty 

report system revealed the failure of 

three oxygen mask flow indicator 

assemblies similar to those identified in 

the NPRM. The Civil Aviation Safety 

Authority notes that those assemblies 

have a manufacturing date of September 

13, 2001, which is prior to the date 

range specified in the NPRM (January 1, 

2002–March 1, 2006), and the masks are 

installed on a different airplane model 

(Beech B300) that have a part/dash 

number not included in B/E Aerospace 

Service Bulletin 174080–35–01 (referred 

to in the NPRM as an additional source 

of guidance for modifying the oxygen 

mask assembly). The Civil Aviation 

Safety Authority adds that the part 

number is in the 174080 series 

(identified in the parts installation 

paragraph of the NPRM). 

We acknowledge the commenter’s 

concern and provide the following 

explanation. We are aware of the issue 

regarding the manufacturing date range 

of oxygen mask flow indicator 

assemblies installed on the small 

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airplane model identified by the 

commenter. We are currently 

investigating that issue to determine if 

additional rulemaking action might be 

necessary for airplane models other than 

those specified in the applicability of 

this AD. 

With regard to this specific AD, the 

failures were due to certain mask 

stowage box designs that cause higher 

than normal stresses on the flow 

indicator assemblies. The 

manufacturing date range was 

determined by the manufacturer, and 

we based the AD on a review of physical 

test data obtained from the oxygen 

masks that were available during that 

review. Based on those data, the 

manufacturing date range addressed in 

this AD is appropriate for the airplanes 

identified in the AD applicability. No 

change to this AD is necessary. 

Explanation of Change to This AD 

Boeing Commercial Airplanes has 

received an Organization Designation 

Authorization (ODA), which replaces 

the previous designation as a Delegation 

Option Authorization (DOA) holder. We 

have revised paragraph (k)(3) of this AD 

to add delegation of authority to Boeing 

Commercial Airplanes ODA to approve 

an alternative method of compliance for 

any repair required by this AD. 

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. 

We also determined that this change 

will not increase the economic burden 

on any operator or increase the scope of 

the AD. 

Explanation of Change to Costs of 

Compliance 

Since issuance of the NPRM, we have 

increased the labor rate in the Costs of 

Compliance from $80 per work hour to 

$85 per work hour. The Costs of 

Compliance information, below, reflects 

this increase in the specified hourly 

labor rate. 

Costs of Compliance 

There are about 1,981 airplanes of the 

affected design in the worldwide fleet. 

This AD affects about 666 airplanes of 

U.S. registry. 

The actions that are required by AD 

2008–06–24 and retained in this AD 

affect about 646 airplanes of U.S. 

registry. The required actions take about 

16 work hours per airplane, for an 

average of 180 oxygen masks per 

airplane distributed in about 45 

passenger service units/oxygen boxes, at 

an average labor rate of $85 per work 

hour. Required parts cost about $6 per 

oxygen mask, or $1,080 per airplane. 

Based on these figures, the estimated 

cost of the existing AD for U.S. 

operators is $1,576,240, or $2,440 per 

airplane. 

This AD is applicable to 

approximately 20 additional airplanes. 

Based on the figures discussed above, 

we estimate the costs for the additional 

airplanes imposed by this AD on U.S. 

operators to be $48,800, or $2,440 per 

airplane. This figure is based on 

assumptions that no operator of these 

additional airplanes has yet done any of 

the requirements of this AD, and that no 

operator will do those actions in the 

future if this AD is not adopted. 

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 

We have determined that 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); and 

(3) 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. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this AD and placed it in the AD docket. 

See the ADDRESSES section for a location 

to examine the regulatory evaluation. 

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 Federal Aviation 

Administration (FAA) amends § 39.13 

by removing amendment 39–15436 (73 

FR 14666, March 19, 2008) and by 

adding the following new airworthiness 

directive (AD): 

2010–14–06 The Boeing Company: 

Amendment 39–16351. Docket No. 

FAA–2009–1224; Directorate Identifier 

2009–NM–118–AD. 

Effective Date 

(a) This AD becomes effective August 5, 

2010. 

Affected ADs 

(b) This AD supersedes AD 2008–06–24, 

Amendment 39–15436. 

Applicability 

(c) This AD applies to The Boeing 

Company Model 737–200, -300, -400, and 

-500 series airplanes, certificated in any 

category; as identified in Boeing Special 

Attention Service Bulletin 737–35–1099, 

Revision 1, dated April 23, 2009. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 35: Oxygen. 

Unsafe Condition 

(e) This AD results from a determination 

indicating that additional airplanes may be 

subject to the identified unsafe condition. 

The Federal Aviation Administration is 

issuing this AD to prevent the in-line flow 

indicators of the passenger oxygen masks 

from fracturing and separating, which could 

inhibit oxygen flow to the masks and 

consequently result in exposure of the 

passengers and cabin attendants to hypoxia 

following a depressurization event. 

Compliance 

(f) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

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Federal Register / Vol. 75, No. 126 / Thursday, July 1, 2010 / Rules and Regulations 38017 

Restatement of Requirements of AD 2008– 

06–24, With New Service Information 

Inspection and Related Investigative/ 

Corrective Actions if Necessary 

(g) For airplanes identified in Boeing 

Special Attention Service Bulletin 737–35– 

1099, dated April 9, 2007: Within 60 months 

after April 23, 2008 (the effective date of AD 

2008–06–24), do a general visual inspection 

to determine the manufacturer and 

manufacture date of the oxygen masks in the 

passenger service unit and the lavatory and 

attendant box assemblies, and do the 

applicable corrective action and other 

specified action, by accomplishing all of the 

applicable actions specified in the 

Accomplishment Instructions of Boeing 

Special Attention Service Bulletin 737–35– 

1099, dated April 9, 2007; or Revision 1, 

dated April 23, 2009; except where these 

service bulletins specify repairing the oxygen 

mask assembly, replace it with a new or 

modified oxygen mask assembly having an 

improved flow indicator. The corrective 

action and other specified action must be 

done before further flight. As of the effective 

date of this AD, use only Revision 1 of 

Boeing Special Attention Service Bulletin 

737–35–1099. 

New Requirements of This AD 

Inspection and Related Investigative/ 

Corrective Actions if Necessary 

(h) For airplanes other than those 

identified in paragraph (g) of this AD: Within 

60 months after the effective date of this AD, 

do a general visual inspection to determine 

the manufacturer and manufacture date of 

the oxygen masks in the passenger service 

unit and the lavatory and attendant box 

assemblies, and do the applicable corrective 

action and other specified action, by 

accomplishing all of the applicable actions 

specified in the Accomplishment 

Instructions of Boeing Special Attention 

Service Bulletin 737–35–1099, Revision 1, 

dated April 23, 2009; except where this 

service bulletin specifies repairing the 

oxygen mask assembly, replace it with a new 

or modified oxygen mask assembly having an 

improved flow indicator. The corrective 

action and other specified action must be 

done before further flight. 

Note 1: Boeing Special Attention Service 

Bulletin 737–35–1099, dated April 9, 2007; 

and Revision 1, dated April 23, 2009; refer 

to B/E Aerospace Service Bulletin 174080– 

35–01, dated February 6, 2006; Revision 1, 

dated May 1, 2006; and Revision 2, dated 

May 28, 2008; as additional sources of 

guidance for modifying the oxygen mask 

assembly by replacing the flow indicator 

with an improved flow indicator. 

Parts Installation 

(i) As of the effective date of this AD, no 

person may install a B/E Aerospace oxygen 

mask assembly having a part number in the 

174080 series or 174095 series with a 

manufacturing date after January 1, 2002, and 

before March 1, 2006, on any airplane, unless 

it has been modified in accordance with the 

requirements of paragraph (h) of this AD. 

Credit for Actions Done in Accordance With 

Previous Issue of the Service Bulletin 

(j) Actions done before the effective date of 

this AD, in accordance with Boeing Special 

Attention Service Bulletin 737–35–1099, 

dated April 9, 2007, are acceptable for 

compliance with the requirements of 

paragraphs (g) and (h) of this AD. 

Alternative Methods of Compliance 

(AMOCs) 

(k)(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. Send information to ATTN: 

Nicholas Wilson, Aerospace Engineer, Cabin 

Safety and Environmental Systems Branch, 

ANM–150S, FAA, Seattle Aircraft 

Certification Office, 1601 Lind Avenue SW., 

Renton, Washington 98057–3356; telephone 

(425) 917–6476; fax (425) 917–6590. Or, email information to 9-ANM-Seattle-ACOAMOC-Requests@faa.gov. 

(2) To request a different method of 

compliance or a different compliance time 

for this AD, follow the procedures in 14 CFR 

39.19. Before using any approved AMOC on 

any airplane to which the AMOC applies, 

notify your principal maintenance inspector 

(PMI) or principal avionics inspector (PAI), 

as appropriate, or lacking a principal 

inspector, your local Flight Standards District 

Office. The AMOC approval letter must 

specifically reference this AD. 

(3) An AMOC that provides an acceptable 

level of safety may be used for any repair 

required by this AD if it is approved by the 

Boeing Commercial Airplanes Organization 

Designation Authorization (ODA) that has 

been authorized by the Manager, Seattle 

ACO, to make those findings. For a repair 

method to be approved, the repair must meet 

the certification basis of the airplane and the 

approval must specifically refer to this AD. 

Material Incorporated by Reference 

(l) You must use Boeing Special Attention 

Service Bulletin 737–35–1099, dated April 9, 

2007; or Boeing Special Attention Service 

Bulletin 737–35–1099, Revision 1, dated 

April 23, 2009; as applicable; 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 

Boeing Special Attention Service Bulletin 

737–35–1099, Revision 1, dated April 23, 

2009, under 5 U.S.C. 552(a) and 1 CFR part 

51. 

(2) The Director of the Federal Register 

previously approved the incorporation by 

reference of Boeing Special Attention Service 

Bulletin 737–35–1099, dated April 9, 2007, 

on April 23, 2008 (73 FR 14666, March 19, 

2008). 

(3) 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. 

(4) You may review copies of the 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. 

(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 NARA, call 202–741–6030, or go 

to: http://www.archives.gov/federal_register/ 

code_of_federal_regulations/ 

ibr_locations.html. 

Issued in Renton, Washington, on June 18, 

2010. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2010–15816 Filed 6–30–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0637; Directorate 

Identifier 2009–NM–062–AD; Amendment 

39–16345; AD 2009–15–16] 

RIN 2120–AA64 

Airworthiness Directives; McDonnell 

Douglas Corporation Model DC–9–10 

Series Airplanes, DC–9–30 Series 

Airplanes, DC–9–81 (MD–81) Airplanes, 

DC–9–82 (MD–82) Airplanes, DC–9–83 

(MD–83) Airplanes, DC–9–87 (MD–87) 

Airplanes, MD–88 Airplanes, and MD– 

90–30 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule; request for 

comments. 

SUMMARY: This document publishes in 

the Federal Register an amendment 

adopting airworthiness directive (AD) 

2009–15–16 that was sent previously to 

all known U.S. owners and operators of 

the McDonnell Douglas Corporation 

airplanes identified above by individual 

notices. This AD requires modifying the 

flight deck door. This AD is prompted 

by a report indicating that certain 

equipment of the flight deck door is 

defective. We are issuing this AD to 

prevent failure of this equipment, which 

could jeopardize flight safety. 

DATES: This AD becomes effective July 

6, 2010 to all persons except those 

persons to whom it was made 

immediately effective by AD 2009–15– 

16, which contained the requirements of 

this amendment. 

The Director of the Federal Register 

approved the incorporation by reference 

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