This section of the FEDERAL REGISTER

contains notices to the public of the proposed

issuance of rules and regulations. The

purpose of these notices is to give interested

persons an opportunity to participate in the

rule making prior to the adoption of the final

rules.

Proposed Rules Federal Register

74010 

Vol. 76, No. 230 

Wednesday, November 30, 2011 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–1258; Directorate 

Identifier 2011–NM–184–AD] 

RIN 2120–AA64 

Airworthiness Directives; Learjet Inc. 

Model 60 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 

Learjet Inc. Model 60 airplanes. This 

proposed AD was prompted by two 

incidents of swapped fire extinguishing 

wires. This proposed AD would require 

inspecting the electrical leads routed to 

the fire extinguishing containers for 

proper identification and missing labels, 

and to ensure the electrical leads are 

connected to the correct squibs; and 

corrective actions if necessary. We are 

proposing this AD to prevent the 

extinguishing agent of the fire 

extinguishing container from being 

delivered to the wrong engine in the 

event of an engine fire, and a 

consequent uncontrolled fire. 

DATES: We must receive comments on 

this proposed AD by January 17, 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 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 Learjet, Inc., 

One Learjet Way, Wichita, Kansas 

67209–2942; telephone (316) 946–2000; 

fax (316) 946–2220; email 

ac.ict@aero.bombardier.com; Internet 

http://www.bombardier.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: 

James Galstad, Aerospace Engineer, 

Mechanical Systems and Propulsion 

Branch, ACE–116W, FAA, Wichita 

Aircraft Certification Office, 1801 

Airport Road, Room 100, Mid-Continent 

Airport, Wichita, Kansas 67209; phone: 

(316) 946–4135; fax: (316) 946–4107; 

email: james.galstad@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– 

2011–1258; Directorate Identifier 2011– 

NM–184–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 received a report of two incidents 

of swapped left and right fire 

extinguishing wires. Due to the 

locations of the forward and aft squibs 

of the fire extinguishing containers, it is 

possible to reverse the electrical wiring 

between the left and right squibs. 

Incorrect wire labeling and improper 

wiring of the squibs could cause the 

extinguishing agent of the fire 

extinguishing container to be delivered 

to the wrong engine in the event of an 

engine fire. This condition, if not 

corrected, could result in an 

uncontrolled fire. 

Relevant Service Information 

We reviewed Bombardier Service 

Bulletin 60–26–4, dated May 2, 2011. 

The service information describes 

procedures for inspecting the electrical 

leads routed to the fire extinguishing 

containers for proper identification and 

missing labels, and to ensure the 

electrical leads are connected to the 

correct squibs; and corrective actions if 

necessary. The corrective actions 

include correcting wiring labels with a 

permanent marker or replacing the 

labels with new heat shrink tubing or 

heat rated tape and identifying them 

properly, and correcting the wire 

routing. 

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 

accomplishing the actions specified in 

the service information described 

previously. 

Costs of Compliance 

We estimate that this proposed AD 

affects 232 airplanes of U.S. registry. 

We estimate the following costs to 

comply with this proposed AD: 


tkelley on DSK3SPTVN1PROD with PROPOSALS
Federal Register / Vol. 76, No. 230 / Wednesday, November 30, 2011 / Proposed Rules 74011 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Inspection ................................ 3 work-hours × $85 per hour = $255 ..................................... 0 $255 $59,160 

We estimate the following costs to do 

any necessary modification that would 

be required based on the results of the 

proposed inspection. We have no way of 

determining the number of aircraft that 

might need this modification: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Corrective actions ............................ 1 work-hour × $85 per hour = $85 ............................................................ $8 $93 

According to the manufacturer, 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): 

Learjet Inc.: Docket No. FAA–2011–1258; 

Directorate Identifier 2011–NM–184–AD. 

(a) Comments Due Date 

We must receive comments by January 17, 

2012. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Learjet Inc. Model 60 

airplanes, certificated in any category, serial 

numbers 60–002 through 60–366 inclusive. 

(d) Subject 

Joint Aircraft System Component (JASC)/ 

Air Transport Association (ATA) of America 

Code 2620, Extinguishing system. 

(e) Unsafe Condition 

This AD was prompted by two incidents of 

swapped fire extinguishing wires, which 

could cause the extinguishing agent of the 

fire extinguishing container to be delivered to 

the wrong engine in the event of an engine 

fire, and a consequent uncontrolled fire. We 

are issuing this AD to correct the unsafe 

condition on these products. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspection and Corrective Actions 

Within 300 flight hours after the effective 

date of this AD, or at the next auxiliary 

power unit (APU) removal, whichever occurs 

first: Inspect the electrical leads routed to the 

fire extinguishing containers for proper 

identification and missing labels, and to 

ensure the electrical leads are connected to 

the correct squibs, as specified in Bombardier 

Service Bulletin 60–26–4, dated May 2, 2011. 

Do the inspection in accordance with 

paragraph 3., ‘‘Accomplishment 

Instructions,’’ of Bombardier Service Bulletin 

60–26–4, dated May 2, 2011. If any 

misidentification is found, or if any label is 

missing, or if the electrical leads are not 

connected to the correct squibs, as specified 

in Bombardier Service Bulletin 60–26–4, 

dated May 2, 2011: Before further flight, do 

all applicable corrective actions, in 

accordance with paragraph 3., 

‘‘Accomplishment Instructions,’’ of 

Bombardier Service Bulletin 60–26–4, dated 

May 2, 2011. 

(h) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Wichita 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. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 


tkelley on DSK3SPTVN1PROD with PROPOSALS
74012 Federal Register / Vol. 76, No. 230 / Wednesday, November 30, 2011 / Proposed Rules 

of the local flight standards district office/ 

certificate holding district office. 

(i) Related Information 

(1) For more information about this AD, 

contact James Galstad, Aerospace Engineer, 

Mechanical Systems and Propulsion Branch, 

ACE–116W, Wichita Aircraft Certification 

Office, FAA, 1801 Airport Road, Room 100, 

Mid-Continent Airport, Wichita, Kansas 

67209; phone: (316) 946–4135; fax: (316) 

946–4107; email: james.galstad@faa.gov. 

(2) For service information identified in 

this AD, contact Learjet, Inc., One Learjet 

Way, Wichita, Kansas 67209–2942; telephone 

(316) 946–2000; fax (316) 946–2220; email 

ac.ict@aero.bombardier.com; Internet http:// 

www.bombardier.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 

November 22, 2011. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–30822 Filed 11–29–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–1257; Directorate 

Identifier 2011–NM–124–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 

Boeing Company Model 777–200, 

–200LR, and –300ER series airplanes. 

This proposed AD was prompted by a 

report from the manufacturer indicating 

that the lowered ceiling support 

structure of Section 41, in airplanes 

incorporating the overhead space 

utilization (OSU) option, was found to 

be under-strength when subjected to a 

9.0 g forward load. This proposed AD 

would require installing new structural 

members in and new tie rod(s) and 

attach fittings on the left and right sides 

of the lowered ceiling support structure. 

We are proposing this AD to prevent the 

forward lowered ceiling panels and 

support structure from becoming 

dislodged during an occurrence of a 9.0 

g forward load and consequent injury to 

personnel or interference with an 

emergency evacuation. 

DATES: We must receive comments on 

this proposed AD by January 17, 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 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, Washington 98124– 

2207; telephone (206) 544–5000, 

extension 1; fax (206) 766–5680; email 

me.boecom@boeing.com; 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: Ana 

Martinez Hueto, Aerospace Engineer, 

Cabin Safety and Environmental 

Systems Branch, ANM–150S, FAA, 

Seattle Aircraft Certification Office 

(ACO), 1601 Lind Avenue SW., Renton, 

WA 98057–3356; phone: (425) 917– 

6592; fax: (425) 917–6591; email: 

ana.m.hueto@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– 

2011–1257; Directorate Identifier 2011– 

NM–124–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 received a report from the 

manufacturer indicating that the 

lowered ceiling support structure of 

Section 41, in airplanes incorporating 

the OSU option, was found to be understrength when subjected to a 9.0 g 

forward load. This condition, if not 

corrected, could cause the forward 

lowered ceiling panels and support 

structure to become dislodged during an 

occurrence of a 9.0 g forward load and 

consequent injury to personnel or 

interference with an emergency 

evacuation. 

Relevant Service Information 

We reviewed Boeing Special 

Attention Service Bulletin 777–25– 

0482, dated February 24, 2011. This 

service information describes 

procedures for installing new structural 

members and new tie rod(s) and attach 

fittings on the left and right sides of the 

lowered ceiling support structure. 

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 these same 

type designs. 

Proposed AD Requirements 

This proposed AD would require 

accomplishing the actions specified in 

the service information described 

previously. 

Costs of Compliance 

We estimate that this proposed AD 

affects 4 airplanes of U.S. registry. 

We estimate the following costs to 

comply with this proposed AD: 


tkelley on DSK3SPTVN1PROD with PROPOSALS