39574 Federal Register / Vol. 78, No. 127 / Tuesday, July 2, 2013 / Rules and Regulations 

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. 

(i) Related Information 

For more information about this AD, 

contact Sue Lucier, Aerospace Engineer, 

Propulsion Branch, ANM–140S, FAA, Seattle 

Aircraft Certification Office, 1601 Lind 

Avenue SW., Renton, Washington 98057– 

3356; phone: 425–917–6438; fax: 425–917– 

6590; email: suzanne.lucier@faa.gov. 

(j) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

to do the actions required by this AD, unless 

the AD specifies otherwise. 

(i) Boeing Alert Service Bulletin 747– 

28A2330, dated April 2, 2012. 

(ii) Boeing Service Bulletin 747–28A2330, 

Revision 1, dated November 30, 2012. 

(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. 

(4) 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. 

(5) You may view this service information 

that is incorporated by reference at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, call 

202–741–6030, or go to: http:// 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued in Renton, Washington, June 13, 

2013. 

Jeffrey E. Duven, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2013–15692 Filed 7–1–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2013–0214; Directorate 

Identifier 2012–NM–152–AD; Amendment 

39–17497; AD 2013–13–09] 

RIN 2120–AA64 

Airworthiness Directives; Learjet Inc. 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Learjet Inc. Model 60 airplanes. This AD 

was prompted by a report of a highspeed rejected takeoff caused by all four 

main landing gear (MLG) tires blowing 

out during the takeoff roll. This AD 

requires installing new rigid hydraulic 

tube assemblies to the MLG struts; 

installing a new MLG squat switch 

bracket, modifying the MLG squat 

switch wire harness; modifying the 

MLG anti-skid wheel transducer 

electrical wire harnesses; routing and 

securing the anti-skid wheel and squat 

switch electrical wire harnesses to the 

MLG strut assembly; installing outboard 

bracket assemblies, anti-skid shield, 

forward electrical cover on the forward 

stiffener, upper and lower inboard 

bracket assemblies, and clamps that 

support the electrical wire harness; 

modifying the aft stiffener for the new 

electrical wire harness support; 

installing the aft electrical cover and 

strap on the aft stiffener; installing a 

new flat landing light lamp if necessary; 

and, for certain airplanes, installing a 

new wheel speed detect box assembly, 

nutplates, and brackets and a new thrust 

reverser interface box, and modifying 

the wiring for the new thrust reverser 

interface box. We are issuing this AD to 

prevent failure of the braking system or 

adverse operation of the spoiler and 

thrust reverser system due to external 

damage, particularly from tire failure, 

which could result in loss of control of 

the airplane. 

DATES: This AD is effective August 6, 

2013. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of August 6, 2013. 

ADDRESSES: For service information 

identified in this AD, contact Learjet, 

Inc., One Learjet Way, Wichita, KS 

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, WA. For information on 

the availability of this material at the 

FAA, call 425–227–1221. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Management Facility between 9 

a.m. and 5 p.m., Monday through 

Friday, except Federal holidays. The AD 

docket contains this AD, the regulatory 

evaluation, any comments received, and 

other information. The address for the 

Docket Office (phone: 800–647–5527) is 

Document Management Facility, U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue SE., Washington, 

DC 20590. 

FOR FURTHER INFORMATION CONTACT: Don 

Ristow, Aerospace Engineer, 

Mechanical Systems and Propulsion 

Branch, ACE–116W, FAA, Wichita 

Aircraft Certification Office, 1801 

Airport Road, Room 100, Mid-Continent 

Airport, Wichita, KS 67209; phone: 

316–946–4120; fax: 316–946–4107; 

email: donald.ristow@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an AD that would 

apply to the specified products. The 

NPRM published in the Federal 

Register on March 27, 2013 (78 FR 

18531). The NPRM proposed to require 

installing new rigid hydraulic tube 

assemblies to the MLG struts; installing 

a new MLG squat switch bracket; 

modifying the MLG squat switch wire 

harness; modifying the MLG anti-skid 

wheel transducer electrical wire 

harnesses; routing and securing the antiskid wheel and squat switch electrical 

wire harnesses to the MLG strut 

assembly; installing outboard bracket 

assemblies, anti-skid shield, forward 

electrical cover on the forward stiffener, 

upper and lower inboard bracket 

assemblies, and clamps that support the 

electrical wire harness; modifying the 

aft stiffener for the new electrical wire 

harness support; installing the aft 

electrical cover and strap on the aft 

stiffener; installing a new flat landing 

light lamp if necessary; and, for certain 

airplanes, installing a new wheel speed 

detect box assembly, nutplates, and 

brackets and a new thrust reverser 


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Federal Register / Vol. 78, No. 127 / Tuesday, July 2, 2013 / Rules and Regulations 39575 

interface box, and modifying the wiring 

for the new thrust reverser interface box. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

have considered the comment received. 

The National Transportation Safety 

Board supported the NPRM (78 FR 

18531, March 27, 2013). 

Conclusion 

We reviewed the relevant data, 

considered the comment received, and 

determined that air safety and the 

public interest require adopting the AD 

as proposed except for minor editorial 

changes. We have determined that these 

minor changes: 

• Are consistent with the intent that 

was proposed in the NPRM (78 FR 

18531, March 27, 2013) for correcting 

the unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM (78 FR 18531, 

March 27, 2013). 

Interim Action 

We consider this AD to be the second 

of three ADs that are related to each 

other, and collectively address unsafe 

conditions that might result from 

damage to critical components on the 

landing gear or in the wheel well that 

affect the braking, spoiler, and thrust 

reverser systems. The manufacturer is 

currently developing a final 

modification for the thrust reverser. 

Once the new thrust reverser 

modification is developed, approved, 

and available, we might consider 

additional rulemaking. 

Costs of Compliance 

We estimate that this AD affects 275 

airplanes of U.S. registry. 

We estimate the following costs to 

comply with this AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Installation of rigid hydraulic tube assemblies and MLG squat 

switch bracket; modification of MLG squat switch wire harness and MLG anti-skid wheel transducer electrical wire harnesses; and routing and securing anti-skid wheel and squat 

switch electrical wire harnesses to MLG strut assembly 

(Bombardier Service Bulletin 60-32–33, dated July 23, 2012).

Up to 53 workhours × $85 

per hour = 

$4,505.

$7,093 Up to $11,598 ........... Up to $3,189,450. 

Installation of outboard bracket assemblies, anti-skid shield, 

forward electrical cover, upper and lower inboard bracket 

assemblies, and clamps; modification of aft stiffener; and installation of aft electrical cover and strap, and flat landing 

light lamp (Bombardier Service Bulletin 60–57–7, dated July 

23, 2012).

Up to 25 workhours × $85 

per hour = 

$2,125.

17,960 Up to $20,085 ........... Up to $5,523,375. 

Installation of wheel speed detect box assembly, nutplates 

brackets, and thrust reverser interface box; and modification 

of wiring for serial numbers 60-002 through 60–276 (Bombardier Service Bulletin 60–78–7, Revision 2, dated May 1, 

2006) (132 U.S. airplanes).

Up to 65 workhours × $85 

per hour = 

$5,525.

1,154 $6,679 ....................... Up to $881,628. 

According to the manufacturer, some 

of the costs of this AD may be covered 

under warranty, thereby reducing the 

cost impact on affected individuals. We 

do not control warranty coverage for 

affected individuals. As a result, we 

have included all costs in our cost 

estimate. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII: 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in Subtitle VII, 

Part A, Subpart III, Section 44701: 

‘‘General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

Regulatory Findings 

This AD will not have federalism 

implications under Executive Order 

13132. This AD will not have a 

substantial direct effect on the States, on 

the relationship between the national 

government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

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

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979), 

(3) Will not affect intrastate aviation 

in Alaska, and 

(4) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

Adoption of the Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 14 CFR part 39 as 

follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive (AD): 

2013–13–09 Learjet Inc.: Amendment 39– 

17497; Docket No. FAA–2013–0214; 

Directorate Identifier 2012–NM–152–AD. 

(a) Effective Date 

This AD is effective August 6, 2013. 


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39576 Federal Register / Vol. 78, No. 127 / Tuesday, July 2, 2013 / Rules and Regulations 

(b) Affected ADs 

Certain requirements of this AD affect 

certain requirements of AD 2010–11–11, 

Amendment 39–16316 (75 FR 32255, June 8, 

2010). 

(c) Applicability 

This AD applies to Learjet Inc. Model 60 

airplanes, certificated in any category, serial 

numbers 60–001 through 60–413 inclusive. 

(d) Subject 

Joint Aircraft System Component (JASC)/ 

Air Transport Association (ATA) of America 

Code 32, Landing gear; 57, Wings; 78, Engine 

exhaust. 

(e) Unsafe Condition 

This AD was prompted by a report of a 

high-speed rejected takeoff caused by all four 

main landing gear (MLG) tires blowing out 

during the takeoff roll. We are issuing this 

AD to prevent failure of the braking system 

or adverse operation of the spoiler and thrust 

reverser system due to external damage, 

particularly from tire failure, which could 

result in loss of control of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Modification and Installation 

Within 600 flight hours or 12 months after 

the effective date of this AD, whichever 

occurs first: Do the actions required by 

paragraphs (g)(1), (g)(2), and (g)(3) of this AD, 

as applicable. 

(1) For all airplanes: Install new rigid 

hydraulic tube assemblies to the MLG struts, 

install a new MLG squat switch bracket and 

modify the MLG squat switch wire harness, 

modify the MLG anti-skid wheel transducer 

electrical wire harnesses, and route and 

secure the anti-skid wheel and squat switch 

electrical wire harnesses to the MLG strut 

assembly, in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 60–32–33, dated July 23, 

2012. 

(2) For all airplanes: Install outboard 

bracket assemblies, anti-skid shield, forward 

electrical cover on the forward stiffener, 

upper and lower inboard bracket assemblies, 

and clamps that support the electrical wire 

harness; modify the aft stiffener for the new 

electrical wire harness support; install the aft 

electrical cover and strap on the aft stiffener; 

and install a new flat landing light lamp, as 

applicable; in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 60–57–7, dated July 23, 

2012. 

(3) For airplanes having serial numbers 60– 

002 through 60–276 inclusive: Install a new 

wheel speed detect box assembly, nutplates, 

brackets, and interface box; and modify the 

wiring for the new thrust reverser interface 

box; in accordance with the Accomplishment 

Instructions of Bombardier Service Bulletin 

60–78–7, Revision 2, dated May 1, 2006. 

(h) Terminating Action for AD 2010–11–11, 

Amendment 39–16316 (75 FR 32255, June 8, 

2010) 

After accomplishing the actions required 

by paragraph (g) of this AD, the requirement 

in paragraph (h) of AD 2010–11–11, 

Amendment 39–16316 (75 FR 32255, June 8, 

2010), to check the nose and main tire 

pressures before 96 hours prior to takeoff, is 

terminated. All provisions of paragraphs (g) 

and (h) of AD 2010–11–11 that are not 

specifically referenced by this paragraph 

remain fully applicable and must be 

complied with. 

(i) Credit for Previous Actions 

This paragraph provides credit for the 

corresponding actions specified in paragraph 

(g)(3) of this AD, if those actions were 

performed before the effective date of this AD 

using Bombardier Service Bulletin SB60–78– 

7, dated February 21, 2005; or Revision 1, 

dated June 30, 2005; which are not 

incorporated by reference in this AD. 

(j) 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 

of the local flight standards district office/ 

certificate holding district office. 

(k) Related Information 

For more information about this AD, 

contact Don Ristow, Aerospace Engineer, 

Mechanical Systems and Propulsion Branch, 

ACE–116W, FAA, Wichita Aircraft 

Certification Office, 1801 Airport Road, 

Room 100, Mid-Continent Airport, Wichita, 

KS 67209; phone: 316–946–4120; fax: 316– 

946–4107; email: donald.ristow@faa.gov. 

(l) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless the AD specifies otherwise. 

(i) Bombardier Service Bulletin 60–32–33, 

dated July 23, 2012. 

(ii) Bombardier Service Bulletin 60–57–7, 

dated July 23, 2012. 

(iii) Bombardier Service Bulletin 60–78–7, 

Revision 2, dated May 1, 2006. 

(3) For service information identified in 

this AD, contact Learjet, Inc., One Learjet 

Way, Wichita, KS 67209–2942; telephone 

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

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

www.bombardier.com. 

(4) You may view this service information 

at FAA, Transport Airplane Directorate, 1601 

Lind Avenue SW., Renton, WA. For 

information on the availability of this 

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

(5) You may view this service information 

that is incorporated by reference at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, call 

202–741–6030, or go to: http:// 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued in Renton, Washington, on June 13, 

2013. 

Jeffrey E. Duven, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2013–15402 Filed 7–1–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 91 

[Docket No. FAA–2013–0503; Amdt. No. 91– 

328] 

RIN 2120–AK25 

Adoption of Statutory Prohibition on 

the Operation of Jets Weighing 75,000 

Pounds or Less That Are Not Stage 3 

Noise Compliant 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: This rulemaking amends the 

airplane operating regulations to 

include certain provisions of the FAA 

Modernization and Reform Act of 2012 

that affect jet airplanes with a maximum 

weight of 75,000 pounds or less 

operating in the United States. The law 

provides that after December 31, 2015, 

such airplanes will not be allowed to 

operate in the contiguous United States 

unless they meet Stage 3 noise levels. 

This final rule incorporates that 

prohibition and describes the 

circumstances under which an 

otherwise prohibited airplane may be 

operated. 

DATES: This rule becomes effective 

September 3, 2013. Send comments on 

or before August 1, 2013. 

Compliance with the prohibition in 

§ 91.801(e) is required after December 

31, 2015. 

FOR FURTHER INFORMATION CONTACT: For 

technical questions concerning this 

action, contact Sandy Liu, AEE–100, 

Office of Environment and Energy, 

Federal Aviation Administration, 800 

Independence Avenue SW., 

Washington, DC 20591; telephone: (202) 

493–4864; facsimile (202) 267–5594; 

email: sandy.liu@faa.gov. 


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