60676 Federal Register / Vol. 78, No. 191 / Wednesday, October 2, 2013 / Rules and Regulations 

(ii) Boeing Special Attention Service 

Bulletin 737–34–2102, dated June 5, 2008 

(for Model 737–100, –200, and –200C series 

airplanes). 

(iii) Boeing Special Attention Service 

Bulletin 747–34–2925, dated June 4, 2008 

(for Model 747–100, –100B, –100B SUD, 

–200B, –200C, –200F, –300, –400, –400D, 

–400F, 747SR, and 747SP series airplanes). 

(j) 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 

paragraph (k) of this AD. Information may be 

emailed to: 9-ANM-Seattle-ACO-AMOCRequests@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. 

(k) Related Information 

For more information about this AD, 

contact Ray Mei, Aerospace Engineer, 

Systems and Equipment Branch, ANM–130S, 

Seattle Aircraft Certification Office, FAA, 

1601 Lind Avenue SW., Renton, WA 98057– 

3356; phone: (425) 917–6467; fax: (425) 917– 

6590; email: raymont.mei@faa.gov. 

(l) 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 Special Attention Service 

Bulletin 727–34–0245, dated June 4, 2008. 

(ii) Boeing Special Attention Service 

Bulletin 737–34–2102, dated June 5, 2008. 

(iii) Boeing Special Attention Service 

Bulletin 747–34–2925, dated June 4, 2008. 

(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, Washington 98124–2207; 

telephone 206–544–5000, extension 1; fax 

206–766–5680; Internet https://

www.myboeingfleet.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 

September 13, 2013. 

Jeffrey E. Duven, 

Acting Manager, Manager, Transport 

Airplane Directorate, Aircraft Certification 

Service. 

[FR Doc. 2013–23084 Filed 10–1–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2013–0090; Directorate 

Identifier 2012–NM–149–AD; Amendment 

39–17595; AD 2013–19–13] 

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 747–100, 

747–100B, 747–100B SUD, 747–200B, 

747–200C, 747–300, 747–400, 747– 

400D, and 747SP series airplanes. This 

AD was prompted by reports of worn or 

incorrectly assembled latches on main 

deck escape slides installed on airplane 

doors. This AD requires determining if 

the latches are correctly assembled; and 

doing corrective actions if necessary. 

This AD also requires, for certain 

airplanes, modifications to the escape 

slide/rafts and escape slides. We are 

issuing this AD to prevent a latch hook 

moving from closed to open in an 

escape slide/raft or escape slide, which 

could result in the escape slide/raft or 

escape slide not deploying correctly in 

an emergency, or releasing/inflating into 

the passenger cabin and causing injury 

to passengers and crew. 

DATES: This AD is effective November 6, 

2013. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of November 6, 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 

Goodrich service information identified 

in this AD, contact Goodrich 

Corporation, Aircraft Interior Products, 

ATTN: Technical Publications, 3414 

South Fifth Street, Phoenix, AZ 85040– 

1169; telephone 602–243–2200; Internet 

http://www.goodrich.com/TechPubs. 

You may review copies of the 

referenced 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. 

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: 

Sarah Piccola, Aerospace Engineer, 

Cabin Safety and Environmental 

Systems Branch, ANM–150S, FAA, 

Seattle Aircraft Certification Office, 

1601 Lind Avenue SW., Renton, WA 

98057–3356; phone: 425–917–6483; fax: 

425–917–6590; email: sarah.piccola@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to the specified products. The 

NPRM published in the Federal 

Register on February 8, 2013 (78 FR 

9346). The NPRM proposed to require 

determining if the latches on main deck 

escape slides installed on airplane doors 

are correctly assembled; and doing 

corrective actions if necessary. The 

NPRM also proposed to require, for 

certain airplanes, modifications to the 

escape slide/rafts and escape slides. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. The 

following presents the comments 

received on the proposal (78 FR 9346, 

February 8, 2013) and the FAA’s 

response to each comment. 

Request To Extend Compliance Time 

Delta Air Lines (DAL) requested that 

the compliance time in the NPRM (78 

FR 9346, February 8, 2013) be extended 

to 60 months. DAL stated that this will 


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Federal Register / Vol. 78, No. 191 / Wednesday, October 2, 2013 / Rules and Regulations 60677 

allow for the modification to be 

accomplished at the next scheduled 

overhaul for DAL’s affected slides. 

We disagree with DAL’s request to 

extend the compliance time. In 

developing an appropriate compliance 

time for this action, we considered the 

safety implications, parts availability, 

and normal maintenance schedules for 

the timely accomplishment of the 

inspections and modification. However, 

under the provisions of paragraph (j) of 

this final rule, we will consider requests 

for approval of an extension of the 

compliance time if sufficient data are 

submitted to substantiate that the new 

compliance time would provide an 

acceptable level of safety. We have not 

changed this final rule in this regard. 

Requests To Refer to Revised Service 

Information 

United Airlines and Boeing stated that 

Boeing has issued revised service 

information. The commenters requested 

that the service information in the 

NPRM (78 FR 9346, February 8, 2013) 

be updated to refer to Boeing Special 

Attention Service Bulletin 747–25– 

3428, Revision 4, dated February 25, 

2013. 

DAL requested that the NPRM (78 FR 

9346, February 8, 2013) be revised to 

allow the replacement of affected slides 

with slides on which the inspection and 

modification have been done in 

accordance with the Accomplishment 

Instructions of Boeing Special Attention 

Service Bulletin 747–25–3428, Revision 

3, dated June 14, 2012. 

We agree with United Airlines’ and 

Boeing’s requests and have revised 

paragraphs (c), (g), and (h) in this final 

rule to refer to Boeing Special Attention 

Service Bulletin 747–25–3428, Revision 

4, dated February 25, 2013. 

We also agree with DAL’s request and 

have revised paragraph (i) of this final 

rule by redesignating paragraph (i) of 

the NPRM (78 FR 9346, February 8, 

2013) as paragraph (i)(2), and adding 

new paragraph (i)(1), which provides 

credit for the applicable actions 

required by paragraph (g) of this final 

rule, if those actions were performed 

before the effective date of this final rule 

using Boeing Special Attention Service 

Bulletin 747–25–3428, Revision 3, dated 

June 14, 2012. 

Request To Allow Replacement of 

Slides Using a Means Other Than the 

Service Information 

DAL requested that, alternatively, the 

proposed AD (78 FR 9346, February 8, 

2013) be revised to include a statement 

that accomplishment of the inspection 

and modification by means of an 

approved routine maintenance item 

would be acceptable. 

As previously stated, we deem it 

acceptable to replace an affected part 

with a part that has been inspected and 

modified in accordance with the 

Accomplishment Instructions of Boeing 

Special Attention Service Bulletin 747– 

25–3428, Revision 3, dated June 14, 

2012. 

Regarding the use of an approved 

maintenance item instead of the 

Accomplishment Instructions of Boeing 

Special Attention Service Bulletin 747– 

25–3428, Revision 3, dated June 14, 

2012, DAL included this as a 

conditional statement if the slide 

replacement discussed above was 

deemed unacceptable. As stated above, 

we agree that affected slides can be 

replaced with slides that have 

completed the inspection and 

modification in accordance with the 

Accomplishment Instructions of Boeing 

Special Attention Service Bulletin 747– 

25–3428, Revision 3, dated June 14, 

2012. However, once this final rule is 

issued, any person may request 

approval of an AMOC under the 

provisions of paragraph (j) of this final 

rule. We have not changed this final 

rule in this regard. 

Additional Change to This Final Rule 

We added Note 1 to paragraph (g) of 

this final rule to reference additional 

guidance material. 

Conclusion 

We reviewed the relevant data, 

considered the comments received, and 

determined that air safety and the 

public interest require adopting this 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 (78 FR 9346, 

February 8, 2013) for correcting the 

unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM (78 FR 9346, 

February 8, 2013). 

We also determined that these 

changes will not increase the economic 

burden on any operator or increase the 

scope of this AD. 

Costs of Compliance 

We estimate that this AD affects 121 

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 

Determine if latches are correctly assembled.1 work-hour × $85 per hour = $85 ...... $0 .......................... $85 ........................ $10,285. 

Option to rework/replace latches instead of determining if latches are 

correctly assembled.

Between 3 and 24 work-hours × $85 

per hour = Between $255 and 

$2,040.

$286 per latch ...... Between $541 and 

$2,326.

Between $65,461 

and $281,446. 

We estimate the following costs to do 

any necessary replacements that would 

be required based on the results of the 

latch assembly determination. We have 

no way of determining the number of 

aircraft that might need this 

replacement: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Corrective action .............................................. Between 3 and 24 work-hours × $85 per hour 

= Between $255 and $2,040.

$286 per latch ............ Between $541 and 

$2,326. 


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According to the manufacturer, all of 

the costs of this AD may be covered 

under warranty, thereby reducing the 

cost impact on affected individuals. We 

do not control warranty coverage for 

affected individuals. As a result, we 

have included all costs in our cost 

estimate. 

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): 

2013–19–13 The Boeing Company: 

Amendment 39–17595; Docket No. 

FAA–2013–0090; Directorate Identifier 

2012–NM–149–AD. 

(a) Effective Date 

This AD is effective November 6, 2013. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to The Boeing Company 

Model 747–100, 747–100B, 747–100B SUD, 

747–200B, 747–200C, 747–300, 747–400, 

747–400D, and 747SP series airplanes; 

certificated in any category; as identified in 

Boeing Special Attention Service Bulletin 

747–25–3428, Revision 4, dated February 25, 

2013; except for Groups 3–4, Configuration 2, 

and Group 9, Configuration 2, airplanes. 

(d) Subject 

Joint Aircraft System Component (JASC)/

Air Transport Association (ATA) of America 

Code 25, Equipment/furnishings. 

(e) Unsafe Condition 

This AD was prompted by reports of worn 

or incorrectly assembled latches on main 

deck escape slides installed on airplane 

doors. We are issuing this AD to prevent a 

latch hook moving from closed to open in an 

escape slide/raft or escape slide, which could 

result in the escape slide/raft or escape slide 

not deploying correctly in an emergency, or 

releasing/inflating into the passenger cabin 

and causing injury to passengers and crew. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Replacement or Rework of Escape Slide 

Latch Assembly 

Within 48 months after the effective date 

of this AD: Determine if the latches in the 

main deck escape slide/rafts and the escape 

slides installed on the airplane doors are 

correctly assembled, and do all applicable 

corrective actions, in accordance with the 

Accomplishment Instructions of Boeing 

Special Attention Service Bulletin 747–25– 

3428, Revision 4, dated February 25, 2013. 

Do all applicable corrective actions before 

further flight. Options provided in Boeing 

Special Attention Service Bulletin 747–25– 

3428, Revision 4, dated February 25, 2013, 

for determining the correct assembly of the 

latches are acceptable for the corresponding 

requirement of this paragraph. 

Note 1 to paragraph (g) of this AD: Boeing 

Special Attention Service Bulletin 747–25– 

3428, Revision 4, dated February 25, 2013, 

refers to Goodrich Service Bulletin 25–367, 

Revision 1, dated May 1, 2012, as an 

additional source of guidance for unpacking 

the escape slide/raft assemblies. 

(h) Concurrent Requirements 

For Groups 1, 5, 10, and 13 airplanes, as 

identified in Boeing Special Attention 

Service Bulletin 747–25–3428, Revision 4, 

dated February 25, 2013: Prior to or 

concurrently with accomplishing the actions 

required by paragraph (g) of this AD, replace 

the packboard cap nuts with flush-type 

inserts, reinforce the lower packboard 

support bracket attachments, install hooks, 

modify the lower liner of the main entry door 

and packboard, and remove the ‘‘Press to 

Test’’ circuit panel and associated circuitry, 

in accordance with the Accomplishment 

Instructions of Boeing Service Bulletin 747– 

25–2425, Revision 1, dated September 7, 

1979. 

(i) Credit for Previous Actions 

(1) This paragraph provides credit for the 

applicable actions required by paragraph (g) 

of this AD, if those actions were performed 

before the effective date of this AD using 

Boeing Special Attention Service Bulletin 

747–25–3428, Revision 3, dated June 14, 

2012, which is not incorporated by reference 

in this AD. 

(2) This paragraph provides credit for the 

applicable concurrent actions required by 

paragraph (h) of this AD, if those actions 

were performed before the effective date of 

this AD using Boeing Service Bulletin 747– 

25–2425, dated August 25, 1978, which is not 

incorporated by reference in this AD. 

(j) 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 

paragraph (k) of this AD. Information may be 

emailed to: 9-ANM-Seattle-ACO-AMOCRequests@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. 

(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. 

(k) Related Information 

(1) For more information about this AD, 

contact Sarah Piccola, Aerospace Engineer, 

Cabin Safety and Environmental Systems 


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Federal Register / Vol. 78, No. 191 / Wednesday, October 2, 2013 / Rules and Regulations 60679 

Branch, ANM–150S, FAA, Seattle Aircraft 

Certification Office, 1601 Lind Avenue SW., 

Renton, WA 98057–3356; phone: 425–917– 

6483; fax: 425–917–6590; email: 

sarah.piccola@faa.gov. 

(2) For Goodrich service information 

identified in this AD, contact Goodrich 

Corporation, Aircraft Interior Products, 

ATTN: Technical Publications, 3414 South 

Fifth Street, Phoenix, AZ 85040–1169; 

telephone 602–243–2200; Internet http://

www.goodrich.com/TechPubs. 

(3) Boeing service information identified in 

this AD that is not incorporated by reference 

may be obtained at the addresses specified in 

paragraphs (l)(3) and (l)(4) of this AD. 

(l) 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 Special Attention Service 

Bulletin 747–25–3428, Revision 4, dated 

February 25, 2013. 

(ii) Boeing Service Bulletin 747–25–2425, 

Revision 1, dated September 7, 1979. (Pages 

1 through 4 of this document are dated 

September 7, 1979. Pages 5 through 20 of this 

document are dated August 25, 1978.) 

(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. 

(4) You may view this service information 

at 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. 

(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 

September 13, 2013. 

Jeffrey E. Duven, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2013–24031 Filed 10–1–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–0425; Directorate 

Identifier 2011–NM–273–AD; Amendment 

39–17604; AD 2013–19–22] 

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 all The 

Boeing Company Model 717–200 

airplanes. This AD was prompted by 

multiple reports of cracks of overwing 

frames. This AD requires repetitive 

inspections for cracking of the overwing 

frames, and corrective actions if 

necessary. We are issuing this AD to 

detect and correct such cracking that 

could sever a frame, which may increase 

the loading of adjacent frames, and 

result in damage to the adjacent 

structure and consequent loss of 

structural integrity of the airplane. 

DATES: This AD is effective November 6, 

2013. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of November 6, 2013. 

ADDRESSES: For service information 

identified in this AD, contact Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, 3855 

Lakewood Boulevard, MC D800–0019, 

Long Beach, CA 90846–0001; telephone 

206–544–5000, extension 2; fax 206– 

766–5683; 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, WA. 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: 

George Garrido, Aerospace Engineer, 

Airframe Branch, ANM–120L, FAA, Los 

Angeles Aircraft Certification Office, 

3960 Paramount Boulevard, Lakewood, 

CA 90712–4137; phone: 562–627–5357; 

fax: 562–627–5210; email: 

george.garrido@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued an SNPRM (supplemental 

notice of proposed rulemaking) to 

amend 14 CFR part 39 by adding an 

airworthiness directive (AD) that would 

apply to the specified products. The 

SNPRM published in the Federal 

Register on May 6, 2013 (78 FR 26286). 

We preceded the SNPRM with a notice 

of proposed rulemaking (NPRM) that 

published in the Federal Register on 

May 9, 2012 (77 FR 27142). The NPRM 

(77 FR 27142, May 9, 2012) proposed to 

require repetitive inspections for 

cracking of the overwing frames, and 

corrective actions if necessary. The 

SNPRM proposed to revise the initial 

compliance time and provide an 

optional modification that would extend 

the compliance time for the next 

repetitive inspection. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. The 

following presents the comments 

received on the SNPRM (78 FR 26286, 

May 6, 2013) and the FAA’s response to 

each comment. 

Request To Correct Service Bulletin 

Title 

Boeing noted an error in the title of a 

service bulletin referenced in 

paragraphs (h) and (h)(2) of the SNPRM 

(78 FR 26286, May 6, 2013). Boeing 

requested the word ‘‘Alert’’ be removed 

with reference to ‘‘Boeing ‘Alert’ Service 

Bulletin 717–53–0035, dated June 8, 

2012.’’ 

We agree with Boeing’s request. We 

have revised paragraphs (h) and (h)(2) of 

this final rule to correct the service 

bulletin title accordingly, since the 

referenced service bulletin is not an 

‘‘Alert’’ service bulletin. 

Request To Provide Credit for Previous 

Actions 

Boeing stated that cracked overwing 

frames had been found during 

scheduled inspections done in 

accordance with 717 Maintenance Task 

53–129–01, and that the frames were 

replaced as a consequence. Boeing 

requested that we revise the SNPRM (78 


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