51722 Federal Register / Vol. 77, No. 166 / Monday, August 27, 2012 / Proposed Rules 

‘‘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– 

2012–0860; Directorate Identifier 2012– 

NM–123–AD. 

(a) Comments Due Date 

We must receive comments by October 11, 

2012. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to The Boeing Company 

Model 737–600, -700, -800, and -900ER series 

airplanes; certificated in any category; as 

identified in Boeing Special Attention 

Service Bulletin 737–28–1303, dated April 

26, 2012. 

(d) Subject 

Joint Aircraft System Component (JASC)/ 

Air Transport Association (ATA) of America 

Code 28, Fuel System. 

(e) Unsafe Condition 

This AD was prompted by incorrect wire 

support clamps installed within the left 

environmental cooling systems (ECS) bay, 

which could allow wiring to come in contact 

with the exposed metal of the improper 

clamp. We are issuing this AD to prevent 

electrical arcing and a potential ignition 

source, which in combination with 

flammable fuel vapors could result in a fuel 

tank explosion, and consequent loss of the 

airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspection and Corrective Actions 

Within 60 months after the effective date 

of this AD, do a detailed inspection for part 

number TA0930034–10 wire support clamp, 

and do all applicable related investigative 

and corrective actions, in accordance with 

the Accomplishment Instructions of Boeing 

Special Attention Service Bulletin 737–28– 

1303, dated April 26, 2012. Do all applicable 

related investigative and corrective actions 

before further flight. 

(h) Parts Installation Prohibition 

As of the effective date of this AD, no 

person may install a wire support clamp that 

is not part number (P/N) TA0930034–10 

within the left ECS bay of any airplane. 

(i) 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. 

(j) Related Information 

(1) For more information about this AD, 

contact Georgios Roussos, Aerospace 

Engineer, Systems and Equipment Branch, 

ANM–130S, FAA, Seattle Aircraft 

Certification Office, 1601 Lind Avenue SW., 

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

6482; fax: 425–917–6590; email: 

georgios.roussos@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, Washington 98124–2207; telephone 

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

5680; Internet https:// 

www.myboeingfleet.com. You may review 

copies of the referenced service information 

at the FAA, Transport Airplane Directorate, 

1601 Lind Avenue SW., Renton, Washington. 

For information on the availability of this 

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

Issued in Renton, Washington, on August 

17, 2012. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–20967 Filed 8–24–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–0859; Directorate 

Identifier 2012–NM–090–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Proposed rule; rescission. 

SUMMARY: We propose to rescind an 

existing airworthiness directive (AD) 

that applies to certain The Boeing 

Company Model 737–600, –700, –700C, 

–800 and –900 series airplanes; and 

Model 757–200, –200PF, –200CB, and 

–300 series airplanes. The existing AD 

currently requires inspecting to 

determine if certain motor-operated 

shutoff valve actuators for the fuel tanks 

are installed, and related investigative 

and corrective actions if necessary. The 

existing AD also requires revising the 

Airworthiness Limitations (AWLs) 

section of the Instructions for Continued 

Airworthiness to incorporate AWL No. 

28–AWL–21, No. 28–AWL–22, and No. 

28–AWL–24 (for Model 737–600, –700, 

–700C, –800 and –900 series airplanes); 

and No. 28–AWL–23, No. 28–AWL–24, 

and No. 28–AWL–25 (for Model 757– 

200, –200PF, –200CB, and –300 series 

airplanes). We issued that AD to prevent 

electrical energy from lightning, hot 

shorts, or fault current from entering the 

fuel tank through the actuator shaft, 

which could result in fuel tank 


pmangrum on DSK3VPTVN1PROD with PROPOSALS-1
Federal Register / Vol. 77, No. 166 / Monday, August 27, 2012 / Proposed Rules 51723 

explosions and consequent loss of the 

airplane. Since we issued that AD, we 

have received new data indicating that 

the existing AD addresses that safety 

concern, but also introduces a different 

unsafe condition. 

DATES: We must receive comments on 

this proposed AD by October 11, 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: Deliver to the 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 

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: 

Rebel Nichols, Aerospace Engineer, 

Propulsion Branch, ANM–140S, FAA, 

Seattle Aircraft Certification Office, 

1601 Lind Avenue SW., Renton, WA 

98057–3356; phone: (425) 917–6509; 

fax: (425) 917–6590; email: 

Rebel.Nichols@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–2012–0859; Directorate Identifier 

2012–NM–090–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 

On February 28, 2008, we issued AD 

2008–06–03, Amendment 39–15415 (73 

FR 13081, March 12, 2008), for certain 

The Boeing Company Model 737–600, 

–700, –700C, –800 and –900 series 

airplanes; and Model 757–200, –200PF, 

–200CB, and –300 series airplanes. That 

AD requires inspecting to determine if 

certain motor-operated shutoff valve 

actuators for the fuel tanks are installed, 

and related investigative and corrective 

actions if necessary. That AD also 

requires revising the AWL section of the 

Instructions for Continued 

Airworthiness to incorporate AWL No. 

28–AWL–21, No. 28–AWL–22, and No. 

28–AWL–24 (for Model 737–600, –700, 

–700C, –800 and –900 series airplanes); 

and No. 28–AWL–23, No. 28–AWL–24, 

and No. 28–AWL–25 (for Model 757– 

200, –200PF, –200CB, and –300 series 

airplanes). That AD resulted from a 

design review of the fuel tank systems. 

We issued that AD to prevent electrical 

energy from lightning, hot shorts, or 

fault current from entering the fuel tank 

through the actuator shaft, which could 

result in fuel tank explosions and 

consequent loss of the airplane. 

Actions Since Existing AD 2008–06–03, 

Amendment 39–15415 (73 FR 13081, 

March 12, 2008) Was Issued 

Since we issued AD 2008–06–03, 

Amendment 39–15415 (73 FR 13081, 

March 12, 2008), we discovered that the 

corrective action addresses that safety 

concern, but also introduces a different 

unsafe condition. The manufacturer is 

developing a more complete solution to 

address both unsafe conditions. We will 

consider additional rulemaking to 

require a new solution once that 

solution is developed, approved, and 

available for accomplishment. 

FAA’s Conclusions 

Upon further consideration, we have 

determined that existing AD 2008–06– 

03, Amendment 39–15415 (73 FR 

13081, March 12, 2008), must be 

rescinded. Accordingly, this proposed 

AD would rescind AD 2008–06–03. 

Rescission of AD 2008–06–03 would not 

preclude the FAA from issuing another 

related action or commit the FAA to any 

course of action in the future. 

Related Costs 

AD 2008–06–03, Amendment 39– 

15415 (73 FR 13081, March 12, 2008), 

affects about 1,406 airplanes of U.S. 

registry. The estimated cost of the 

currently required actions for U.S. 

operators was $112,480 per inspection, 

and $337,440 per AWL revision; or $80 

per inspection, and $240 per AWL 

revision, per airplane. Rescinding AD 

2008–06–03 would eliminate those 

costs. 

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 

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 that the 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); 


pmangrum on DSK3VPTVN1PROD with PROPOSALS-1
51724 Federal Register / Vol. 77, No. 166 / Monday, August 27, 2012 / Proposed Rules 

(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 

removing airworthiness directive (AD) 

2008–06–03, Amendment 39–15415 (73 

FR 13081, March 12, 2008), and adding 

the following new AD: 

The Boeing Company: Docket No. FAA– 

2012–0859; Directorate Identifier 2012– 

NM–090–AD. 

Comments Due Date 

(a) The FAA must receive comments on 

this AD action by October 11, 2012. 

Affected ADs 

(b) This action rescinds AD 2008–06–03, 

Amendment 39–15415 (73 FR 13081, March 

12, 2008). 

Applicability 

(c) This action applies to The Boeing 

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

and –900 series airplanes; and Model 757– 

200, –200PF, –200CB, and –300 series 

airplanes; certificated in any category; as 

identified in Boeing Alert Service Bulletins 

737–28A1207, dated February 15, 2007, and 

757–28A0088, dated January 25, 2007. 

Issued in Renton, Washington, on August 

17, 2012. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–20968 Filed 8–24–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0258; Directorate 

Identifier 2010–NM–191–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company 

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, for certain 

airplanes, installing two warning level 

indicator lights on each of the P1–3 and 

P3–1 instrument panels in the flight 

compartment. That NPRM also 

proposed to require revising the 

airplane flight manual to remove certain 

requirements of previous AD actions, 

and to advise the flightcrew of the 

following changes: revised non-normal 

procedures to use when a cabin altitude 

warning or rapid depressurization 

occurs, and revised cabin pressurization 

procedures for normal operations. That 

NPRM was prompted by a design 

change in the cabin altitude warning 

system that would address the 

identified unsafe condition. This action 

revises that NPRM by adding airplanes 

to the applicability; adding airplanes to 

the installation requirement, including, 

for certain airplanes, replacing the 

existing P5–16 and P5–10 panels; and, 

for certain airplanes, replacing the basic 

P5–16 panel with a high altitude 

landing P5–16 panel. We are proposing 

this supplemental NPRM to prevent 

failure of the flightcrew to recognize and 

react to a valid cabin altitude warning 

horn, which could result in 

incapacitation of the flightcrew due to 

hypoxia (lack of oxygen in the body), 

and consequent loss of control 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 supplemental NPRM by October 11, 

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 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. 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: 

Jeffrey W. Palmer, Aerospace Engineer, 

Systems and Equipment Branch, ANM– 

130S, FAA, Seattle Aircraft Certification 

Office, 1601 Lind Avenue SW., Renton, 

Washington 98057–3356; phone: (425) 

917–6472; fax: (425) 917–6590; email: 

jeffrey.w.palmer@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–2011–0258; Directorate Identifier 

2010–NM–191–AD’’ at the beginning of 

your comments. We specifically invite 


pmangrum on DSK3VPTVN1PROD with PROPOSALS-1