30490 Federal Register / Vol. 79, No. 102 / Wednesday, May 28, 2014 / Proposed Rules 

time specified in Table 5 of paragraph 1.E., 

‘‘Compliance,’’ of Boeing Alert Service 

Bulletin 747–53A2696, Revision 1, dated 

April 12, 2012. 

(k) Corrective Actions 

If any cracking is found during any 

inspection required by this AD, before further 

flight, repair using a method approved in 

accordance with the procedures specified in 

paragraph (o) of this AD. 

(l) Exception to Service Information 

Specifications 

Where Boeing Alert Service Bulletin 747– 

53A2696, Revision 1, dated April 12, 2012, 

specifies a compliance time ‘‘after the 

revision 1 date on this service bulletin,’’ this 

AD requires compliance within the specified 

compliance time ‘‘after the effective date of 

this AD.’’ 

(m) Credit for Previous Actions 

This paragraph provides credit for the 

installation of floor beam replacements 

required by this AD, if those actions were 

performed before the effective date of this AD 

using Boeing Alert Service Bulletin 747– 

53A2696, dated October 16, 2008. 

(n) Special Flight Permit 

Special flight permits, as described in 

Section 21.197 and Section 21.199 of the 

Federal Aviation Regulations (14 CFR 21.197 

and 21.199), are not allowed. 

(o) 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 persons identified in 

paragraphs (o)(1) and (o)(2) of this AD. 

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

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/

certificate holding district office. 

(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. 

(p) Related Information 

(1) For more information about this AD, 

contact Roger Caldwell, Aerospace Engineer, 

Technical Operations Center, ANM–100D, 

FAA, Denver Aircraft Certification Office, 

26805 East 68th Avenue, Room 214, Denver, 

CO 80249; phone: 303–342–1086; fax: 303– 

342–1088; email: roger.caldwell@faa.gov. 

(2) For information about AMOCs, contact 

Bill Ashforth, Aerospace Engineer, Airframe 

Branch, ANM–120S, FAA, Seattle Aircraft 

Certification Office, 1601 Lind Avenue SW., 

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

6432; fax: 425–917–6590; email: 

bill.ashforth@faa.gov. 

(3) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Data & Services 

Management, P.O. Box 3707, MC 2H–65, 

Seattle, WA 98124–2207; telephone 206– 

544–5000, extension 1; fax 206–766–5680; 

Internet https://www.myboeingfleet.com. You 

may view this referenced service information 

at the FAA, Transport Airplane Directorate, 

1601 Lind Avenue SW., Renton, WA. For 

information on the availability of this 

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

Issued in Renton, Washington, on May 15, 

2014. 

Michael Kaszycki, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2014–12260 Filed 5–27–14; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2014–0286; Directorate 

Identifier 2014–NM–004–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

The Boeing Company Model 737–600 

and –700 series airplanes. This 

proposed AD was prompted by reports 

of cracking in a bulkhead lower frame. 

This proposed AD would require a 

detailed and open hole high frequency 

eddy current (HFEC) inspection of the 

left- and right-side lower frame webs 

and inner chords for cracking, if 

necessary, and corrective actions and 

preventative modifications, if necessary. 

This proposed AD would also provide 

for optional terminating action for the 

repetitive inspections under certain 

conditions. We are proposing this AD to 

detect and correct cracking in a 

bulkhead lower frame web and inner 

chord, which could result in a severed 

frame and induced skin cracks, and lead 

to rapid decompression of the fuselage. 

DATES: We must receive comments on 

this proposed AD by July 14, 2014. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this proposed AD, contact Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, P.O. Box 3707, 

MC 2H–65, Seattle, WA 98124–2207; 

telephone 206–544–5000, extension 1; 

fax 206–766–5680; Internet https://

www.myboeingfleet.com. You may view 

this referenced service information at 

the FAA, Transport Airplane 

Directorate, 1601 Lind Avenue SW., 

Renton, WA. 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 by searching for 

and locating Docket No. FAA–2014– 

0286; 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 proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Office 

(phone: 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: 

Alan Pohl, Aerospace Engineer, 

Airframe Branch, ANM–120S, FAA, 

Seattle Aircraft Certification Office, 

1601 Lind Avenue SW., Renton, WA 

98057–3356; phone: (425) 917–6450; 

fax: (425) 917–6590; email: alan.pohl@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposal. Send your comments to 

an address listed under the ADDRESSES

section. Include ‘‘Docket No. FAA– 

2014–0286; Directorate Identifier 2014– 

NM–004–AD’’ at the beginning of your 

comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

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Federal Register / Vol. 79, No. 102 / Wednesday, May 28, 2014 / Proposed Rules 30491 

aspects of this proposed AD. We will 

consider all comments received by the 

closing date and may amend this 

proposed AD because of those 

comments. 

We will post all comments we 

receive, without change, to http://

www.regulations.gov, including any 

personal information you provide. We 

will also post a report summarizing each 

substantive verbal contact we receive 

about this proposed AD. 

Discussion 

We have received reports of cracking 

in the STA 727 bulkhead lower frame. 

This condition, if not corrected, could 

result in a severed frame and induced 

skin cracks, and lead to rapid 

decompression of the fuselage. 

Relevant Service Information 

We reviewed Boeing Alert Service 

Bulletin 737–53A1325, dated December 

3, 2013. For information on the 

procedures and compliance times, see 

this service information at http://

www.regulations.gov by searching for 

Docket No. FAA–2014–0286. 

FAA’s Determination 

We are proposing this AD because we 

evaluated all the relevant information 

and determined the unsafe condition 

described previously is likely to exist or 

develop in other products of the same 

type design. 

Proposed AD Requirements 

This proposed AD would require a 

detailed and open hole HFEC inspection 

of the left- and right-side lower frame 

webs and inner chords for cracking, if 

necessary, and corrective actions and 

preventative modifications, if necessary; 

except as discussed under ‘‘Differences 

Between this Proposed AD and the 

Service Information.’’ 

The phrase ‘‘corrective actions’’ is 

used in this proposed AD. ‘‘Corrective 

actions’’ are actions that correct or 

address any condition found. Corrective 

actions in an AD could include, for 

example, repairs. 

Differences Between This Proposed AD 

and the Service Information 

The service information specifies to 

contact the manufacturer for 

instructions on how to do certain 

inspections and repair certain 

conditions, but this proposed AD would 

require accomplishing those actions in 

one of the following ways: 

• In accordance with a method that 

we approve; or 

• Using data that meet the 

certification basis of the airplane, and 

that have been approved by the Boeing 

Commercial Airplanes Organization 

Designation Authorization (ODA) whom 

we have authorized to make those 

findings. 

Costs of Compliance 

We estimate that this proposed AD 

affects 489 airplanes of U.S. registry. 

We estimate the following costs to 

comply with this proposed AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on 

U.S. operators 

Inspections .............................. 37 work-hours × $85 per hour = $3,145 ................................ $0 $3,145 $1,537,905 

We estimate the following costs to do 

any necessary repairs that would be 

required based on the results of the 

proposed inspections. We have no way 

of determining the number of aircraft 

that might need these repairs: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Repair (per side) .............................. 11 work-hours × $85 per hour = $935 ...................................................... $2,820 $3,755 

Modification ...................................... 17 work-hours × $85 per hour = $1,445 ................................................... 1,132 2,577 

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 determined that this proposed AD 

would not have federalism implications 

under Executive Order 13132. This 

proposed AD would 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 this proposed regulation: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Is not a ‘‘significant rule’’ under 

the 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. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

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30492 Federal Register / Vol. 79, No. 102 / Wednesday, May 28, 2014 / Proposed Rules 

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. Amend § 39.13 by adding the 

following new airworthiness directive 

(AD): 

The Boeing Company: Docket No. FAA– 

2014–0286; Directorate Identifier 2014– 

NM–004–AD. 

(a) Comments Due Date 

We must receive comments by July 14, 

2014. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to The Boeing Company 

Model 737–600 and –700 series airplanes, 

certificated in any category, as identified in 

Boeing Alert Service Bulletin 737–53A1325, 

dated December 3, 2013. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 53, Fuselage. 

(e) Unsafe Condition 

This AD was prompted by reports of 

cracking in the body station (STA) 727 

bulkhead lower frame. We are issuing this 

AD to detect and correct cracking in a 

bulkhead lower frame web and inner chord, 

which could result in a severed framed and 

induced skin cracks, and lead to rapid 

decompression of the fuselage. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspections 

At the applicable times specified in 

paragraph 1.E., ‘‘Compliance,’’ of Boeing 

Alert Service Bulletin 737–53A1325, dated 

December 3, 2013, except as provided by 

paragraph (i)(1) of this AD: Do a detailed and 

open hole high frequency eddy current 

(HFEC) inspection of the left- and right-side 

lower frame webs and inner chords for 

cracking, as applicable, and do all applicable 

corrective actions and preventative 

modifications, in accordance with the 

Accomplishment Instructions of Boeing Alert 

Service Bulletin 737–53A1325, dated 

December 3, 2013, except as required by 

paragraph (i)(2) of this AD. Repeat the 

applicable inspections required by this 

paragraph thereafter at the applicable 

intervals specified in paragraph 1.E., 

‘‘Compliance,’’ of Boeing Alert Service 

Bulletin 737–53A1325, dated December 3, 

2013. Do all applicable corrective actions and 

preventative modifications before further 

flight. 

(h) Terminating Action 

Accomplishment of a modification or a 

repair in accordance with Boeing Alert 

Service Bulletin 737–53A1325, dated 

December 3, 2013, terminates the repetitive 

inspections in this AD for the repaired or 

modified side only. 

(i) Exceptions to Service Information 

Specifications 

(1) Where Boeing Alert Service Bulletin 

737–53A1325, dated December 3, 2013, 

specifies a compliance time ‘‘after the 

original issue date of this service bulletin,’’ 

this AD requires compliance within the 

specified compliance time after the effective 

date of this AD. 

(2) Where Boeing Alert Service Bulletin 

737–53A1325, dated December 3, 2013, 

specifies to contact Boeing for appropriate 

action: Before further flight, accomplish the 

corresponding action using a method 

approved in accordance with the procedures 

specified in paragraph (k) of this AD. 

(j) Post-Repair Inspections 

The post-repair inspections, specified in 

tables 4, 5, and 6 of paragraph 1.E., 

‘‘Compliance,’’ of Boeing Alert Service 

Bulletin 737–53A1325, dated December 3, 

2013, are not required by this AD. 

Note 1 to paragraph (j) of this AD: The 

damage tolerance inspections specified in 

tables 4, 5, and 6 of paragraph 1.E., 

‘‘Compliance,’’ of Boeing Alert Service 

Bulletin 737–53A1325, dated December 3, 

2013, may be used in support of compliance 

with Section 121.1109(c)(2) or 129.109(b)(2) 

of the Federal Aviation Regulations (14 CFR 

121.1109(c)(2) or 14 CFR 129.109(b)(2)). The 

corresponding actions specified in the 

Accomplishment Instructions of Boeing Alert 

Service Bulletin 737–53A1325, dated 

December 3, 2013, are not required by this 

AD. 

(k) 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 (l)(1) 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. 

(l) Related Information 

(1) For more information about this AD, 

contact Alan Pohl, Aerospace Engineer, 

Airframe Branch, ANM–120S, FAA, Seattle 

Aircraft Certification Office, 1601 Lind 

Avenue SW., Renton, WA 98057–3356; 

phone: (425) 917–6450; fax: (425) 917–6590; 

email: alan.pohl@faa.gov. 

(2) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Data & Services 

Management, P.O. Box 3707, MC 2H–65, 

Seattle, WA 98124–2207; telephone 206– 

544–5000, extension 1; fax 206–766–5680; 

Internet https://www.myboeingfleet.com. You 

may view this referenced service information 

at the FAA, Transport Airplane Directorate, 

1601 Lind Avenue SW., Renton, WA. For 

information on the availability of this 

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

Issued in Renton, Washington, on May 15, 

2014. 

Michael Kaszycki, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2014–12244 Filed 5–27–14; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2013–0692; Directorate 

Identifier 2012–NM–024–AD] 

RIN 2120–AA64 

Airworthiness Directives; Airbus 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Supplemental notice of 

proposed rulemaking (NPRM); 

reopening of comment period. 

SUMMARY: We are revising an earlier 

proposed airworthiness directive (AD) 

for all Airbus Model A318, A319, A320, 

and A321 series airplanes. The NPRM 

proposed to supersede AD 2011–14–06 

and proposed revising the maintenance 

program. The NPRM was prompted by 

the determination that more restrictive 

limitations are necessary. This action 

revises the NPRM by revising the 

maintenance program to incorporate 

new limitations. We are proposing this 

AD to prevent fatigue cracking, 

accidental damage, or corrosion in 

principal structural elements, and 

possible failure of certain life limited 

parts, which could result in reduced 

structural integrity of the airplane. Since 

these actions impose an additional 

burden over that proposed in the NPRM, 

we are reopening the comment period to 

allow the public the chance to comment 

on these proposed changes. 

DATES: We must receive comments on 

this proposed AD by July 14, 2014. 

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