Federal Register / Vol. 77, No. 170 / Friday, August 31, 2012 / Proposed Rules 53155 

service information referenced above. 

We are proposing this AD because we 

evaluated all information provided by 

EASA and determined the unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. The proposed AD would 

require inspection of the oil filler plug 

vent hole at the next scheduled 

maintenance or within 110 flight hours 

after the effective date of this AD. If 

chips are found to be blocking the vent 

hole, additional corrective action is 

required before next flight. 

Costs of Compliance 

We estimate that this proposed AD 

would affect about 45 engines installed 

on airplanes of U.S. registry. We also 

estimate that it would take about 2.5 

work-hours per product to comply with 

this proposed AD. The average labor 

rate is $85 per work-hour. Required 

parts would cost about $30 per engine. 

Based on these figures, we estimate the 

cost of the proposed AD to U.S. 

operators to be $10,913. 

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); 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 proposed AD and placed it in the 

AD docket. 

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: 

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 AD: 

Thielert Aircraft Engines: Docket No. FAA– 

2012–0885; Directorate Identifier 2012– 

NE–18–AD. 

(a) Comments Due Date 

We must receive comments by October 30, 

2012. 

(b) Affected Airworthiness Directives (ADs) 

None. 

(c) Applicability 

This AD applies to all TAE 125–09–99 and 

TAE 125–02–114 reciprocating engines. 

(d) Reason 

This AD was prompted by an in-flight 

shutdown of an airplane equipped with an 

TAE 125–02–99 engine. We are issuing this 

AD to prevent engine in-flight shutdown or 

power loss, possibly resulting in reduced 

control of the airplane. 

(e) Actions and Compliance 

Unless already done, within 110 flight 

hours after the effective date of this AD, or 

at the next scheduled maintenance, do the 

following. 

(1) Remove the oil filler plug and check for 

chips blocking the vent hole in accordance 

with TAE Service Bulletin (S/B) TM TAE 

125–1015 P1, Initial Issue, dated April 27, 

2012. 

(2) If chips are found during the inspection 

in paragraph (e)(1) of this AD, disassemble 

the gearbox and check the radial shaft sealing 

rings (at the clutch and the propeller shaft) 

for leakage. If leakage is noted, replace the 

gearbox before the next flight. 

(f) Installation Prohibition 

After the effective date of this AD, do not 

install a gearbox with an S/N listed in TAE 

S/B TM TAE 125–1015, Initial Issued, dated 

April 27, 2012, into any engine unless the oil 

filler plug has passed the inspection required 

by paragraph (e)(1) of this AD. 

(g) Alternative Methods of Compliance 

(AMOCs) 

The Manager, Engine Certification Office, 

FAA, may approve AMOCs for this AD. Use 

the procedures found in 14 CFR 39.19. 

(h) Related Information 

(1) For more information about this AD, 

contact Frederick Zink, Aerospace Engineer, 

Engine Certification Office, FAA, Engine and 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

email: frederick.zink@faa.gov; telephone 

(781) 238–7779; fax (781) 238–7199. 

(2) Refer to MCAI Airworthiness Directive 

No. 2012–0112, dated June 22, 2012, and 

TAE S/B TM TAE 125–1015 P1, Initial Issue, 

dated April 27, 2012 for related information. 

(3) For service information identified in 

this AD, contact Thielert Aircraft Engines 

GmbH, Platanenstrasse 14 D–09350, 

Lichtenstein, Germany, telephone: +49– 

37204–696–0; fax: +49–37204–696–2912; 

email: info@centurion-engines.com. You may 

review copies of the referenced service 

information at the FAA, Engine & Propeller 

Directorate, 12 New England Executive Park, 

Burlington, MA. For information on the 

availability of this material at the FAA, call 

781–238–7125. 

Issued in Burlington, Massachusetts, on 

August 24, 2012. 

Robert G. Mann, 

Acting Manager, Engine & Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2012–21524 Filed 8–30–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–1222; Directorate 

Identifier 2010–NM–268–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company 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 certain The Boeing Company Model 

737–600, –700, –700C, –800, –900, and 

–900ER series airplanes. That NPRM 

proposed to require checking the escape 

slide girt for serviceability, and 


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replacement if necessary; modifying the 

cable routing provision; replacing the 

regulator padding; modifying the 

aspirator orientation; and modifying the 

valise. That NPRM also proposed to 

require, for certain airplanes, modifying 

or replacing the Vespel piston, 

modifying the pilot valve regulator, 

installing a new firing cable and safety 

pin, and modifying the slide valise. That 

NPRM was prompted by reports of 

escape slides failing to deploy from the 

forward and aft right-hand doors during 

scheduled maintenance slide 

deployments. This action revises that 

NPRM by adding airplanes to the 

applicability of that NPRM and 

specifying revised service information. 

We are proposing this supplemental 

NPRM to prevent failure of an escape 

slide to deploy, which could result in 

the slide being unusable during an 

emergency evacuation and increased 

likelihood of injury to passengers or 

crewmembers due to the difficulty in 

evacuating 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 supplemental NPRM by October 15, 

2012. 

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: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590, between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. 

For service information identified in 

this proposed AD, contact Goodrich 

Corporation, Aircraft Interior Products, 

Attn: Technical Publications, 3414 

South Fifth Street, Phoenix, Arizona 

85040; phone: 602–243–2270; 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, 

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 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: 

Sarah Piccola, Aerospace Engineer, 

Cabin Safety & Environmental Systems 

Branch, ANM–150S, Seattle Aircraft 

Certification Office (ACO), FAA, 1601 

Lind Avenue SW., Renton, Washington 

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

425–917–6590; email: sarah.piccola@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposed AD. Send your comments 

to an address listed under the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2011–1222; Directorate Identifier 

2010–NM–268–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

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 issued an NPRM to amend 14 CFR 

part 39 to include an AD that would 

apply to The Boeing Company Model 

737–600, –700, –700C, –800, –900, and 

–900ER series airplanes. That NPRM 

published in the Federal Register on 

November 8, 2011 (76 FR 69159). That 

NPRM proposed to require checking the 

escape slide girt for serviceability and 

replacement if necessary, modifying the 

cable routing provision, the aspirator 

orientation, the valise, and replacing the 

regulator padding. That NPRM also 

proposed to require, for certain 

airplanes, modifying or replacing the 

Vespel piston, modifying the pilot valve 

regulator, modifying the slide valise, 

and installing a new firing cable and 

safety pin. 

Actions Since Previous NPRM (76 FR 

69159, November 8, 2011) Was Issued 

Since we issued the previous NPRM 

(76 FR 69159, November 8, 2011), new 

service information has been issued that 

provides clarifications and minor 

corrections, and adds data. 

Additionally, an error was discovered in 

the part numbers (P/Ns) specified in 

paragraph (c), ‘‘Applicability,’’ of that 

NPRM. The specification of ‘‘P/N 

5A3307–1, –3, –5, or –301, S/N 

BNG0001 through BNG5707 inclusive,’’ 

is incorrect. The part number should 

have read ‘‘P/N 5A3307–1, –3, –5, or 

–301, S/N BNG0001 through BNG14499 

inclusive.’’ We have changed the 

supplemental NPRM in this regard. 

Comments 

We gave the public the opportunity to 

comment on the previous NPRM (76 FR 

69159, November 8, 2011). The 

following presents the comments 

received on the NPRM and the FAA’s 

response to each comment. 

Requests To Use Revised Service 

Information 

Boeing, United Airlines (United), and 

Goodrich Corporation (Goodrich) 

requested that the previous NPRM (76 

FR 69159, November 8, 2011) be 

changed to incorporate revised service 

information to ensure that operators are 

incorporating the most current revision 

of the service information. 

We agree that current service 

information should be incorporated into 

this supplemental NPRM. Goodrich 

Service Bulletin 5A3307–25–389, 

Revision 2, dated May 4, 2012; and 

Goodrich Service Bulletin 5A3307–25– 

339, Revision 5, dated May 4, 2012; 

provide minor corrections, updated 

pricing, and additional data. The 

technical content of these documents 

has not been changed. We have changed 

paragraphs (g) and (h)(1) of the 

supplemental NPRM to refer to 

Goodrich Service Bulletin 5A3307–25– 

389, Revision 2, dated May 4, 2012; and 

Goodrich Service Bulletin 5A3307–25– 

339, Revision 5, dated May 4, 2012; as 

applicable. We have changed paragraph 

(i) of the supplemental NPRM to include 

credit for modifications of the escape 

slide done before the effective date of 

the AD using Goodrich Service Bulletin 

5A3307–25–339, Revision 3, dated May 

8, 2009; or Revision 4, dated October 1, 

2011. Modification of the escape slide 

specified in Goodrich Service Bulletin 

5A3307–25–389, Revision 2, dated May 

4, 2012, consists of modifying the cable 

routing provision, replacing the 


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regulator padding, modifying the 

aspirator orientation, and modifying the 

valise. Modification of the escape slide 

specified in Goodrich Service Bulletin 

5A3307–25–339, Revision 5, dated May 

4, 2012, consists of modifying the pilot 

valve regulator P/N 4A3865–2, –3, or –4, 

as applicable; installing a new firing 

cable and safety pin; and modifying the 

slide valise. 

Requests To Change Applicability 

Goodrich, Boeing, United, AirTran 

Airways (AirTran), and Southwest 

Airlines (Southwest) requested that we 

change or clarify the applicability of the 

pervious NPRM (76 FR 69159, 

November 8, 2011) to include slide 

P/N 5A3307–1, –3, –5, or –301, S/Ns 

BNG0001 through BNG14499 inclusive. 

Boeing stated that this change ‘‘will 

ensure that all applicable 5A3307 series 

evacuation slides have been identified 

for incorporation of the Goodrich 

Service Bulletin 5A3307–25–389 

modifications.’’ 

We agree that S/Ns BNG0001 through 

BNG14499 inclusive should be included 

in the applicability of this supplemental 

NPRM as explained previously. We 

have changed paragraph (c) of the 

supplemental NPRM to include P/N 

5A3307–1, –3, –5, or –301, S/N 

BNG0001 through BNG14499 inclusive. 

Requests To Remove Slide Part 

Numbers From the NPRM (76 FR 

69159, November 8, 2011) 

Goodrich, United, and Boeing 

requested that we remove slide P/N 

5A3086–1, –3, or –301, S/Ns B3F001 

through B3F611 inclusive; P/N 5A3088– 

1, –3, or –301, S/Ns B3A001 through 

B3A685 inclusive; from the NPRM (76 

FR 69159, November 8, 2011). Goodrich 

stated that specification of slide P/N 

5A3086–1, –3, or –301, S/Ns B3F001 

through B3F611 inclusive; and P/N 

5A3088–1, –3, or –301, S/Ns B3A001 

through B3A685 inclusive; is 

inappropriate for the proposed AD, 

because the unsafe condition that the 

proposed AD addresses is not an issue 

for the P/Ns 5A3086 and 5A3088 series 

slides. Goodrich also stated that the 

design of the P/Ns 5A3086 and 5A3088 

series slides precludes the type of event 

that has been experienced with the P/N 

5A3307 series slides. Goodrich provided 

detailed information to support its 

request. 

We agree. Including these additional 

parts is confusing and is not directly 

related to the unsafe condition 

addressed by this supplemental NPRM. 

We have changed paragraph (c) of the 

supplemental NPRM to remove slide 

P/N 5A3086–1, –3, or –301, S/Ns 

B3F001 through B3F611 inclusive; and 

P/N 5A3088–1, –3, or –301, S/Ns 

B3A001 through B3A685 inclusive; 

from the supplemental NPRM. 

Request To Remove Girt Check 

Goodrich requested that the girt check 

be removed from the previous NPRM 

(76 FR 69159, November 8, 2011). 

Goodrich stated that the girt condition 

was not a causative factor in the unsafe 

condition described in the previous 

NPRM. The girt condition check is not 

a configuration requirement of the slide 

modification, which addresses the slide 

nondeployment issue. Rather, the girt 

condition check is included in the 

Goodrich service information because it 

falls under the heading of good general 

maintenance practice. Goodrich stated 

that the girt check specified in the 

Goodrich service information was not a 

causative factor in the unsafe condition 

described by the previous NPRM and 

questions the need for it to be called out 

in the AD. 

We agree. The girt condition check is 

not a configuration requirement of the 

slide modification, which addresses the 

slide non-deployment issue. We have 

removed the girt condition check from 

paragraph (g) of the supplemental 

NPRM. 

Requests To Remove Parts Installation 

Restriction 

United, American, WestJet, 

Southwest, Goodrich, and AirTran 

requested that we remove paragraph (j) 

of the NPRM (76 FR 69159, November 

8, 2011), which prohibits installing 

certain parts on any airplane after the 

effective date of the AD. The 

commenters stated that this prohibition 

would prevent the use of affected spare 

slide assemblies (un-modified) during 

modification of the slide units of the 

previous NPRM, as well as the removal 

and reinstallation of the same affected 

unit on an airplane. The commenters 

asserted that this requirement could 

restrict an airline’s ability to return an 

airplane to service due to a shortage of 

parts. 

Boeing requested that we remove 

paragraphs (j)(1) and (j)(3) from the 

previous NPRM (76 FR 69159, 

November 8, 2011). The P/N 5A3086–1, 

–3, and –301 evacuation slides; and 

P/N 5A3088–1, –3, and –301 evacuation 

slides are not affected by Goodrich 

Service Bulletin 5A3307–25–389, 

Revision 1, dated October 1, 2011, 

which is the subject of the previous 

NPRM. Boeing stated that, once the 

evacuation slide has been modified as 

specified in Goodrich Service Bulletin 

5A3307–25–389, Revision 1, dated 

October 1, 2011, into the new P/N 

5A3307–7 configuration, the old 

regulator and regulator valve padding 

parts will have been replaced with new 

parts; therefore, just listing P/N 

5A3307–1, –3, –5, and –301 evacuation 

slides would cover the old regulator and 

regulator valve padding parts. 

We agree with removing the parts 

installation restriction, since this 

prohibition could make it difficult for 

operators to maintain their airplanes. 

After the effective date of the AD, if the 

slides are removed for any reason, this 

prohibition could lead to an airplane 

with slides having mixed part numbers. 

We have removed paragraph (j) from the 

supplemental NPRM, and redesiginated 

subsequent paragraphs accordingly. 

Request To Remove Repeated Wording 

United requested that we address the 

need for repeating accomplishment 

instructions within paragraphs (g) and 

(h) of the previous NPRM (76 FR 69159, 

November 8, 2011). United stated that 

this information is already contained 

within Goodrich Service Bulletins 

5A3307–25–389, Revision 1, dated 

October 1, 2011; and 5A3307–25–339, 

Revision 4, dated October 1, 2011; 

respectively, and by repeating this 

information, the AD could contain dated 

information. 

We agree that repeating the specifics 

of the accomplishment instructions in 

paragraphs (g) and (h) of the 

supplemental NPRM is unnecessary in 

this case. We have changed paragraphs 

(g) and (h) of the supplemental NPRM 

to require modifying the escape slide in 

accordance with the applicable service 

information. We have described the 

specifics of modifying the escape slide 

in paragraphs (g) and (h) of the 

supplemental NPRM in the previous 

response under comment ‘‘Request to 

Use Revised Service Information.’’ No 

further change is necessary in this 

regard. 

Request To Remove Certain Part 

Numbers 

United requested that we address 

repetitive slide part numbers in the 

previous NPRM (76 FR 69159, 

November 8, 2011), which have already 

been subjected to previous AD 

rulemaking. United stated that 

including slide part numbers that were 

subjected to previously issued 

rulemaking, such as AD 2008–24–08, 

Amendment 39–15748 (73 FR 72320, 

November 28, 2008), undermines the 

rulemaking process and forces operators 

to demonstrate compliance against 

certain part numbers for a second time. 

We agree and have removed P/Ns 

5A3307–1 and 5A3307–3, which were 

the subject of previous rulemaking (AD 

2008–24–08, Amendment 39–15748 (73 


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FR 72320, November 28, 2008)), from 

this supplemental NPRM. 

FAA’s Determination 

We are proposing this supplemental 

NPRM 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. Certain changes described above 

expand the scope of the original NPRM. 

As a result, we have determined that it 

is necessary to reopen the comment 

period to provide additional 

opportunity for the public to comment 

on this supplemental NPRM. 

Proposed Requirements of the 

Supplemental NPRM 

This supplemental NPRM would 

require accomplishing the actions 

specified in the service information 

described previously. 

Costs of Compliance 

We estimate that this proposed AD 

affects 557 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 

Modify girt and valise, 

and replace padding.

2 work-hours × $85 per hour = $170 ............. $223 ........................... $393 ........................... $218,901. 

Modify regulator valve, 

install cable and 

pin, and modify 

slide valise.

1 work-hour × $85 per hour = $85 ................. Between $1,749 and 

$1,836.

Between $1,834 and 

$1,921.

Between $1,021,538 

and $1,069,997. 

Modify Vespel piston 1 work-hour × $85 per hour = $85 ................. $0 ............................... $85 ............................. $47,345. 

Optional Vespel piston 

replacement.

Up to 1 work-hour × $85 per hour = $85 ....... Up to $612 ................. Up to $697 ................. Up to $388,229. 

We estimate the following costs to do 

any necessary replacements that would 

be required based on the results of the 

check of the girt. We have no way of 

determining the number of aircraft that 

might need these replacements. 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Girt replacement (Goodrich Service Bulletin 5A3307– 

25–389, Revision 2, dated May 4, 2012).

1 work-hour × $85 per hour = $85 ............................... $942 $1,027 

According to the parts supplier, some 

of the costs of this proposed 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 

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: 

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): 

The Boeing Company: Docket No. FAA– 

2011–1222; Directorate Identifier 2010– 

NM–268–AD. 

(a) Comments Due Date 

We must receive comments by October 15, 

2012. 


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(b) Affected ADs 

This AD affects AD 2008–24–08, 

Amendment 39–15748 (73 FR 72320, 

November 28, 2008). 

(c) Applicability 

This AD applies to The Boeing Company 

Model 737–600, –700, –700C, –800, –900, 

and –900ER series airplanes; certificated in 

any category; with Goodrich Corporation 

door escape slide part number (P/N) 5A3307– 

1, –3, –5, or –301, serial number (S/N) 

BNG0001 through BNG14499 inclusive. 

(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 

escape slides failing to deploy from the 

forward and aft right-hand doors during 

scheduled maintenance slide deployments. 

We are issuing this AD to prevent failure of 

an escape slide to deploy, which could result 

in the slide being unusable during an 

emergency evacuation and increased 

likelihood of injury to passengers or 

crewmembers due to the difficulty in 

evacuating the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Slide Modification 

Within 36 months after the effective date 

of this AD: Modify the escape slide in 

accordance with the Accomplishment 

Instructions of Goodrich Service Bulletin 

5A3307–25–389, Revision 2, dated May 4, 

2012. 

(h) Concurrent Requirements 

(1) For slide P/N 5A3307–301: Prior to or 

concurrently with accomplishing the actions 

required by paragraph (g) of this AD, modify 

the escape slide in accordance with the 

Accomplishment Instructions of Goodrich 

Service Bulletin 5A3307–25–339, Revision 5, 

dated May 4, 2012. 

(2) For slide P/N 5A3307–301 or 5A3307– 

5: Prior to or concurrently with 

accomplishing the actions required by 

paragraph (g) of this AD, modify the Vespel 

piston in the regulator valves, or replace the 

Vespel piston with a new or serviceable 

Vespel piston P/N 3A3566–2 or 3A3832–2, as 

applicable, in accordance with the 

Accomplishment Instructions of Goodrich 

Service Bulletin 25–349, Revision 1, dated 

January 11, 2010. 

(i) Credit for Previous Actions 

(1) This paragraph provides credit for the 

actions required by paragraph (h)(1) of this 

AD, if those actions were performed before 

the effective date of this AD using Goodrich 

Service Bulletin 5A3307–25–339, Revision 1, 

dated September 26, 2003; Revision 2, dated 

March 31, 2004; Revision 3, dated May 8, 

2009; or Revision 4, dated October 1, 2011; 

which are not incorporated by reference in 

this AD. 

(2) This paragraph provides credit for the 

modification or replacement of the Vespel 

piston in the regulator valves required by 

paragraph (h)(2) of this AD, if those actions 

were performed before the effective date of 

this AD using Goodrich Service Bulletin 25– 

349, dated September 15, 2004, 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 the 

Related Information section of this AD. 

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

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(k) Related Information 

(1) For more information about this AD, 

contact Sarah Piccola, Aerospace Engineer, 

Cabin Safety & Environmental Systems 

Branch, ANM–150S, Seattle Aircraft 

Certification Office (ACO), FAA, 1601 Lind 

Avenue SW., Renton, Washington 98057– 

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

6590; email: sarah.piccola@faa.gov. 

(2) For service information identified in 

this AD, contact Goodrich Corporation, 

Aircraft Interior Products, ATTN: Technical 

Publications, 3414 South Fifth Street, 

Phoenix, Arizona 85040; phone: 602–243– 

2270; Internet: http://www.goodrich.com/ 

TechPubs. You may review copies of the 

referenced service information at the FAA, 

Transport Airplane Directorate, the FAA, 

1601 Lind Avenue SW., Renton, Washington. 

For information on the availability of this 

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

Issued in Renton, Washington, on August 

24, 2012. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–21556 Filed 8–30–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2012–0661; Airspace 

Docket No. 09–AWA–4] 

RIN 2120–AA66 

Proposed Amendment to Class B 

Airspace; Detroit, MI 

Correction 

In proposed rule document 2012– 

19902, beginning on page 48476–48491 

in the issue of Thursday, August 14, 

2012, make the following corrections: 

1. In the first column titled ‘‘Area C’’, 

third paragraph, fifth line, ‘‘5-mile arc’’ 

should read, ‘‘15 mile arc.’’ 

2. In the first column titled ‘‘Area C’’, 

third paragraph, eighth line, ‘‘5-mile 

arc’’ should read, ‘‘15 mile arc.’’ 

3. In the first column titled ‘‘Area C’’, 

third paragraph, twenty-second line, ‘‘5- 

mile arc’’ should read, ‘‘15 mile arc.’’ 

4. In the first column titled ‘‘Area C’’, 

third paragraph, twenty-third line, ‘‘5- 

mile arc’’ should read, ‘‘15 mile arc.’’ 

5. In the second column titled ‘‘Area 

D’’, first paragraph, eighth line, ‘‘5-mile 

arc’’ should read, ‘‘15 mile arc.’’ 

6. In the second column titled ‘‘Area 

D’’, first paragraph, eleventh line, ‘‘5- 

mile arc’’ should read, ‘‘15 mile arc.’’ 

7. In the second column titled ‘‘Area 

E’’, first paragraph, twenty-fourth line, 

‘‘5-mile arc’’ should read, ‘‘15 mile arc.’’ 

8. In the second column titled ‘‘Area 

E’’, first paragraph, twenty-seventh line, 

‘‘5-mile arc’’ should read, ‘‘15 mile arc.’’ 

[FR Doc. C1–2012–19902 Filed 8–30–12; 8:45 am] 

BILLING CODE 1505–01–D 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Parts 91, 121, 125, and 135 

[Docket No. FAA–2012–0752] 

Passenger Use of Portable Electronic 

Devices on Board Aircraft 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of policy; request for 

comments. 

SUMMARY: The FAA seeks comments on 

current policy, guidance, and 

procedures that aircraft operators 

(ranging from pilots of general aviation 

aircraft up to and including air carrier 

certificate holders at the major airlines) 

use when determining if passenger use 

of portable electronic devices (PEDs) 


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