Federal Register / Vol. 76, No. 202 / Wednesday, October 19, 2011 / Rules and Regulations 64785 

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/ 

code_of_federal_regulations/ 

ibr_locations.html. 

Issued in Renton, Washington, on October 

3, 2011. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–26257 Filed 10–18–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39s 

[Docket No. FAA–2011–0312; Directorate 

Identifier 2010–NM–159–AD; Amendment 

39–16838; AD 2011–21–15] 

RIN 2120–AA64 

Airworthiness Directives; Empresa 

Brasileira de Aeronautica S.A. 

(EMBRAER) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Model EMB–135ER, –135KE, –135KL, 

and –135LR airplanes; and Model EMB– 

145, –145ER, –145MR, –145LR, 

–145MP, and –145EP airplanes. This AD 

results from mandatory continuing 

airworthiness information (MCAI) 

originated by an aviation authority of 

another country to identify and correct 

an unsafe condition on an aviation 

product. The MCAI describes the unsafe 

condition as: 

This [Brazilian] AD results from reports of 

cracking in the firewall of the auxiliary 

power unit (APU). This AD is being issued 

to detect and correct this cracking, which 

could result in reduced structural integrity of 

the fuselage and empennage in the event that 

a fire penetrates through the firewall of the 

APU. 

* * * * * 

We are issuing this AD to require 

actions to correct the unsafe condition 

on these products. 

DATES: This AD becomes effective 

November 23, 2011. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of November 23, 2011. 

ADDRESSES: You may examine the AD 

docket on the Internet at http:// 

www.regulations.gov or in person at the 

U.S. Department of Transportation, 

Docket Operations, M–30, West 

Building Ground Floor, Room W12–140, 

1200 New Jersey Avenue, SE., 

Washington, DC. 

FOR FURTHER INFORMATION CONTACT: 

Todd Thompson, Aerospace Engineer, 

International Branch, ANM–116, 

Transport Airplane Directorate, FAA, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 227–1175; fax (425) 227–1149. 

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. That 

NPRM was published in the Federal 

Register on April 19, 2011 (76 FR 

21822). That NPRM proposed to correct 

an unsafe condition for the specified 

products. The MCAI states: 

This [Brazilian] AD results from reports of 

cracking in the firewall of the auxiliary 

power unit (APU). This AD is being issued 

to detect and correct this cracking, which 

could result in reduced structural integrity of 

the fuselage and empennage in the event that 

a fire penetrates through the firewall of the 

APU. 

* * * * * 

The required actions include repetitive 

detailed inspections for cracking of the 

rearward and forward face of the APU 

firewall, and repair if necessary. You 

may obtain further information by 

examining the MCAI in the AD docket. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

considered the comments received. 

Request To Reference Latest Revision of 

Embraer Service Bulletin 145–53–0062 

EMBRAER and ExpressJet Airlines 

requested that we reference EMBRAER 

Service Bulletin 145–53–0062, Revision 

07, dated May 27, 2011, in the NPRM 

(76 FR 21822, April 19, 2011) as it is the 

most current. 

We agree that the latest service 

information should be referenced in this 

AD. We have changed references in 

paragraphs (h) and (l) of this AD to 

include EMBRAER Service Bulletin 

145–53–0062, Revision 07, dated May 

27, 2011. The effectivity of Revision 07 

was changed to add serial numbers that 

were inadvertently omitted in 

EMBRAER Service Bulletin 145–53– 

0062, Revision 06, dated August 11, 

2010. (The applicability of this final rule 

remains unchanged.) In addition, we 

have added EMBRAER Service Bulletin 

145–53–0062, Revision 06, dated 

August 11, 2010, to ‘‘Table 1—Credit 

Service Bulletins’’ of this AD. 

Request To Remove Date and Revision 

Level of the Airplane Maintenance 

Manual (AMM) or Allow for Later 

Revisions 

American Eagle Airlines requested 

that we remove the date and revision 

level of the AMM specified in paragraph 

(g) of the NPRM (76 FR 21822, April 19, 

2011), or allow for future revisions to 

the AMM. The commenter noted that if 

either of the AMM sections is updated 

by the manufacturer, the operators 

would be required to accomplish an 

obsolete task. 

We disagree with removing the date 

and revision level of the AMM because 

all documents incorporated by reference 

are required to have the date and 

revision level in accordance with the 

Office of the Federal Register 

regulations for approval of materials 

‘‘incorporated by reference’’ in rules. 

See 1 CFR 51.1(f). We also disagree with 

allowing the use of ‘‘future’’ revisions to 

the AMM. When referring to a specific 

service document in an AD, using the 

phrase, ‘‘or later FAA-approved 

revisions,’’ violates Office of the Federal 

Register regulations for approval of 

materials ‘‘incorporated by reference’’ in 

rules. See 1 CFR 51.1(f). In general 

terms, we are required by these OFR 

regulations to either publish the service 

document contents as part of the actual 

AD language; or submit the service 

document to the OFR for approval as 

‘‘referenced’’ material, in which case we 

may only refer to such material in the 

text of an AD. The AD may refer to the 

service document only if the OFR 

approved it for ‘‘incorporation by 

reference.’’ See 1 CFR part 51. 

However, because a later revision of 

the AMM has been issued since the 

NPRM (76 FR 21822, April 19, 2011) 

was published, we have revised 

paragraphs (g) and (l), and Note 2 of this 

AD to refer to EMBRAER EMB145 

Aircraft Maintenance Manual, Part II, 

AMM–145/1124, Revision 54, dated 

April 28, 2011. We have also added new 

paragraph (i) (and re-identified 

subsequent paragraphs accordingly) to 

this AD to give credit for EMBRAER 

EMB145 Aircraft Maintenance Manual, 

Part II, AMM–145/1124, Revision 53, 

dated October 28, 2010, which was 

referenced as the appropriate source of 

service information for certain actions 

specified in the NPRM. However, 

operators may request approval of an 

AMOC to use later revisions of this 

AMM under the provisions of paragraph 

(k) of this AD. No changes have been 

made to the AD in this regard. 


sroberts on DSK5SPTVN1PROD with RULES
64786 Federal Register / Vol. 76, No. 202 / Wednesday, October 19, 2011 / Rules and Regulations 

Request To Change the Initial 

Compliance Time 

ExpressJet Airlines requested that we 

change the initial compliance time from 

3,300 flight hours to ‘‘5,000 flight hours 

or at the next heavy maintenance visit.’’ 

The commenter stated that its 

experience with repairing and replacing 

APU firewalls can be a very time 

consuming process which would be 

better suited for a heavy check. 

We disagree with the commenter’s 

request to extend the compliance time. 

In developing an appropriate 

compliance time for this action, we 

considered the safety implications, parts 

availability, and normal maintenance 

schedules for the timely 

accomplishment of the inspection. In 

consideration of these items, as well as 

the reports of cracking in the firewall of 

the APU, we have determined that the 

initial compliance time of 3,300 flight 

hours will ensure an acceptable level of 

safety. However, operators may request 

approval of an AMOC under the 

provisions of paragraph (k) of this AD. 

No changes have been made to the AD 

in this regard. 

Conclusion 

We reviewed the available data, 

including the comments received, and 

determined that air safety and the 

public interest require adopting the AD 

with the changes described previously. 

We determined that these changes will 

not increase the economic burden on 

any operator or increase the scope of the 

AD. 

Differences Between This AD and the 

MCAI or Service Information 

We have reviewed the MCAI and 

related service information and, in 

general, agree with their substance. But 

we might have found it necessary to use 

different words from those in the MCAI 

to ensure the AD is clear for U.S. 

operators and is enforceable. In making 

these changes, we do not intend to differ 

substantively from the information 

provided in the MCAI and related 

service information. 

We might also have required different 

actions in this AD from those in the 

MCAI in order to follow our FAA 

policies. Any such differences are 

highlighted in a NOTE within the AD. 

Costs of Compliance 

We estimate that this AD will affect 

668 products of U.S. registry. We also 

estimate that it will take about 2 workhours per product to comply with the 

basic requirements of this AD. The 

average labor rate is $85 per work-hour. 

Based on these figures, we estimate the 

cost of this AD to the U.S. operators to 

be $113,560, or $170 per product. 

In addition, we estimate that any 

necessary follow-on actions would take 

about 10 work-hours and require parts 

costing $10,060 for a cost of $10,910 per 

product. We have no way of 

determining the number of products 

that may need these actions. 

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 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 this AD: 

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 AD and placed it in the AD docket. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Operations office between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. The AD docket 

contains the NPRM (76 FR 21822, April 

19, 2011), the regulatory evaluation, any 

comments received, and other 

information. The street address for the 

Docket Operations office (telephone 

(800) 647–5527) is in the ADDRESSES

section. Comments will be available in 

the AD docket shortly after receipt. 

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 AD: 

2011–21–15 Empresa Brasileira de 

Aeronautica S.A. (EMBRAER): 

Amendment 39–16838. Docket No. 

FAA–2011–0312; Directorate Identifier 

2010–NM–159–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective November 23, 2011. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Empresa Brasileira 

de Aeronautica S.A. (EMBRAER) Model 

EMB–135ER, –135KE, –135KL, and –135LR 

airplanes; and Model EMB–145, –145ER, 

–145MR, –145LR, –145MP, and –145EP 

airplanes; certificated in any category; 

equipped with titanium auxiliary power unit 

(APU) firewall part number (P/N) 145– 

47494–401, 145–26850–401, 145–26850–601, 

or 145–47494–403. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 53: Fuselage. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

This [Brazilian] AD results from reports of 

cracking in the firewall of the auxiliary 

power unit (APU). This AD is being issued 

to detect and correct this cracking, which 

could result in reduced structural integrity of 

the fuselage and empennage in the event that 

a fire penetrates through the firewall of the 

APU. 

* * * * * 

Compliance 

(f) You are responsible for having the 

actions required by this AD performed within 


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Federal Register / Vol. 76, No. 202 / Wednesday, October 19, 2011 / Rules and Regulations 64787 

the compliance times specified, unless the 

actions have already been done. 

Actions 

(g) Within 3,300 flight hours after the 

effective date of this AD, do a detailed 

inspection for cracking of the rearward and 

forward face of the APU firewall, including 

its attachment to the fuselage, removing 

neither the structural reinforcements nor the 

dampers, in accordance with Task 05–20–47– 

200–801–A, Rear Fuselage II—Aft of Rear 

Pressure Bulkhead—Internal General Visual 

Inspection, of Subject 5–20–47, Rear Fuselage 

II—Aft of Rear Pressure Bulkhead—Internal, 

and Task 05–20–57–200–801–A, Rear 

Fuselage II—Tail Cone Fairing—Internal 

General Visual Inspection, of Subject 5–20– 

57, Rear Fuselage II—Tail Cone Fairing— 

Internal, of Chapter 5, Time Limits 

Maintenance Checks, of EMBRAER EMB145 

Aircraft Maintenance Manual, Part II, AMM– 

145/1124, Revision 54, dated April 28, 2011. 

(1) If no cracking is found during any 

inspection required by paragraph (g) of this 

AD, repeat the inspection thereafter at 

intervals not to exceed 6,600 flight hours, 

until the terminating action specified in 

paragraph (h) of this AD has been 

accomplished. 

(2) If any cracking is found during any 

inspection required by paragraph (g) of this 

AD, before further flight, repair in accordance 

with Subject 53–32–13, Rear Fuselage II— 

APU Firewall, of Chapter 53, Fuselage, of the 

EMBRAER EMB135, ERJ140, EMB145, 

Structural Repair Manual, SRM–145/1142, 

Revision 43, dated December 1, 2010; or in 

accordance with a method approved by the 

International Branch, ANM–116, Transport 

Airplane Directorate, FAA; or Ageˆncia 

Nacional de Aviac ̧a ̃o Civil (ANAC) (or its 

delegated agent). Within 6,600 flight hours 

after doing the repair, do the inspection 

required by paragraph (g) of this AD and 

repeat the inspection thereafter at intervals 

not to exceed 6,600 flight hours, until the 

terminating action specified in paragraph (h) 

of this AD has been accomplished. 

Note 1: For the purpose of this AD, a 

detailed inspection is: ‘‘An intensive 

examination of a specific item, installation or 

assembly to detect damage, failure or 

irregularity. Available lighting is normally 

supplemented with a direct source of good 

lighting at an intensity deemed appropriate. 

Inspection aids such as mirrors, magnifying 

lenses, etc., may be necessary. Surface 

cleaning and elaborate access procedures 

may be required.’’ 

Optional Terminating Action 

(h) Replacing the APU firewall having 

P/N 145–47494–401, 145–26850–401, 145– 

26850–601, or 145–47494–403, with a new 

APU firewall having P/N 145–47494–607, in 

accordance with the Accomplishment 

Instructions of EMBRAER Service Bulletin 

145–53–0062, Revision 07, dated May 27, 

2011, terminates the repetitive inspections 

required by paragraphs (g)(1) and (g)(2) of 

this AD. 

Credit for Actions Accomplished in 

Accordance With Previous Service 

Information 

(i) Actions done before the effective date of 

this AD, in accordance with Task 05–20–47– 

200–801–A, Rear Fuselage II—Aft of Rear 

Pressure Bulkhead—Internal General Visual 

Inspection, of Subject 5–20–47, Rear Fuselage 

II—Aft of Rear Pressure Bulkhead—Internal, 

of Chapter 5, Time Limits Maintenance 

Checks, of EMBRAER EMB145 Aircraft 

Maintenance Manual, Part II, AMM–145/ 

1124, Revision 53, dated October 28, 2010, 

are acceptable for compliance with the 

requirements of paragraph (g) of this AD. 

(j) Actions done before the effective date of 

this AD, in accordance with the applicable 

service bulletin specified in table 1 of this 

AD, are acceptable for compliance with the 

requirements of paragraph (h) of this AD. 

TABLE 1—CREDIT SERVICE BULLETINS

EMBRAER Service Bulletin— Revision— Dated— 

145–53–0062 ...................................................................................................................................... 06 August 11, 2010. 

145–53–0062 ...................................................................................................................................... 05 May 20, 2008. 

145–53–0062 ...................................................................................................................................... 04 November 23, 2007. 

145–53–0062 ...................................................................................................................................... 03 September 21, 2007. 

145–53–0062 ...................................................................................................................................... 02 January 25, 2006. 

145–53–0062 ...................................................................................................................................... 01 October 28, 2005. 

145–53–0062 ...................................................................................................................................... ........................ July 29, 2005. 

FAA AD Differences 

Note 2: This AD differs from the MCAI 

and/or service information as follows: 

(1) The MCAI AD does not specify how to 

do the inspection for cracking. This AD 

requires doing a detailed inspection of the 

rearward and forward face of the APU 

firewall, including its attachment to the 

fuselage, in accordance with Task 05–20–47– 

200–801–A, Rear Fuselage II—Aft of Rear 

Pressure Bulkhead—Internal General Visual 

Inspection, of Subject 5–20–47, Rear Fuselage 

II—Aft of Rear Pressure Bulkhead—Internal, 

and Task 05–20–57–200–801–A, Rear 

Fuselage II—Tail Cone Fairing—Internal 

General Visual Inspection, of Subject 5–20– 

57, Rear Fuselage II—Tail Cone Fairing— 

Internal, of Chapter 5, Time Limits 

Maintenance Checks, of EMBRAER EMB145 

Aircraft Maintenance Manual, Part II, AMM– 

145/1124, Revision 54, dated April 28, 2011. 

(2) Where Subjects 5–20–47, Rear Fuselage 

II—Aft of Rear Pressure Bulkhead—Internal, 

and 5–20–57, Rear Fuselage II—Tail Cone 

Fairing—Internal, of Chapter 5, Time Limits 

Maintenance Checks, of EMBRAER EMB145 

Aircraft Maintenance Manual, Part II, AMM– 

145/1124, Revision 54, dated April 28, 2011, 

specify an internal general visual inspection, 

this AD requires a detailed inspection. 

Other FAA AD Provisions 

(k) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, International 

Branch, ANM–116, Transport Airplane 

Directorate, 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 International Branch, send it to ATTN: 

Todd Thompson, Aerospace Engineer, 

International Branch, ANM–116, Transport 

Airplane Directorate, FAA, 1601 Lind 

Avenue, SW., Renton, Washington 98057– 

3356; telephone (425) 227–1175; fax (425) 

227–1149. Information may be e-mailed to: 9- 

ANM-116-AMOC-REQUESTS@faa.gov. 

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. The AMOC 

approval letter must specifically reference 

this AD. 

(2) Airworthy Product: For any requirement 

in this AD to obtain corrective actions from 

a manufacturer or other source, use these 

actions if they are FAA-approved. Corrective 

actions are considered FAA-approved if they 

are approved by the State of Design Authority 

(or their delegated agent). You are required 

to assure the product is airworthy before it 

is returned to service. 

Related Information 

(l) Refer to MCAI ANAC Airworthiness 

Directive 2010–06–03R1, dated September 

20, 2010; EMBRAER Service Bulletin 145– 

53–0062, Revision 07, dated May 27, 2011; 

Task 05–20–47–200–801–A, Rear Fuselage 

II—Aft of Rear Pressure Bulkhead—Internal 

General Visual Inspection, of Subject 5–20– 

47, Rear Fuselage II—Aft of Rear Pressure 

Bulkhead—Internal, and Task 05–20–57– 

200–801–A, Rear Fuselage II—Tail Cone 

Fairing—Internal General Visual Inspection, 

of Subject 5–20–57, Rear Fuselage II—Tail 

Cone Fairing—Internal, of Chapter 5, Time 

Limits Maintenance Checks, of EMBRAER 

EMB145 Aircraft Maintenance Manual, Part 

II, AMM–145/1124, Revision 54, dated April 

28, 2011; and Subject 53–32–13, Rear 


sroberts on DSK5SPTVN1PROD with RULES
64788 Federal Register / Vol. 76, No. 202 / Wednesday, October 19, 2011 / Rules and Regulations 

Fuselage II—APU Firewall, of Chapter 53, 

Fuselage, of the EMBRAER EMB135, ERJ140, 

EMB145, Structural Repair Manual, SRM– 

145/1142, Revision 43, dated December 1, 

2010; for related information. 

Material Incorporated by Reference 

(m) You must use Task 05–20–47–200– 

801–A, Rear Fuselage II—Aft of Rear Pressure 

Bulkhead—Internal General Visual 

Inspection, of Subject 5–20–47, Rear Fuselage 

II—Aft of Rear Pressure Bulkhead—Internal, 

and Task 05–20–57–200–801–A, Rear 

Fuselage II—Tail Cone Fairing—Internal 

General Visual Inspection, of Subject 5–20– 

57, Rear Fuselage II—Tail Cone Fairing— 

Internal, of Chapter 5, Time Limits 

Maintenance Checks, of EMBRAER EMB145 

Aircraft Maintenance Manual, Part II, AMM– 

145/1124, Revision 54, dated April 28, 2011; 

and Subject 53–32–13, Rear Fuselage II— 

APU Firewall, of Chapter 53, Fuselage, of the 

EMBRAER EMB135, ERJ140, EMB145, 

Structural Repair Manual, SRM–145/1142, 

Revision 43, dated December 1, 2010; to do 

the actions required by this AD, unless the 

AD specifies otherwise. If you accomplish 

the optional terminating action specified in 

this AD, you must use EMBRAER Service 

Bulletin 145–53–0062, Revision 07, dated 

May 27, 2011, to do those actions, unless the 

AD specifies otherwise. The revision level of 

the EMBRAER EMB145 Aircraft Maintenance 

Manual AMM–145/1124 is specified on only 

the title page and Chapter 5 List of Effective 

Pages of this document; the Chapter 5 title 

page of this document does not contain a 

revision level or date. The revision level of 

the EMBRAER EMB135, ERJ140, EMB145, 

Structural Repair Manual SRM–145/1142 is 

specified on only the title page and Chapter 

53 List of Effective pages of this document; 

the Chapter 53 title page does not contain a 

revision level or date. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

this service information under 5 U.S.C. 

552(a) and 1 CFR part 51. 

(2) For service information identified in 

this AD, contact Empresa Brasileira de 

Aeronautica S.A. (EMBRAER), Technical 

Publications Section (PC 060), Av. Brigadeiro 

Faria Lima, 2170—Putim—12227–901 Sa ̃o 

Jose dos Campos—SP—BRASIL; telephone 

+55 12 3927–5852 or +55 12 3309–0732; fax 

+55 12 3927–7546; e-mail 

distrib@embraer.com.br; Internet: http:// 

www.flyembraer.com. 

(3) You may review copies of the 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. 

(4) You may also review copies of the 

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/ 

code_of_federal_regulations/ 

ibr_locations.html. 

Issued in Renton, Washington, on October 

3, 2011. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–26718 Filed 10–18–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0306; Directorate 

Identifier 2010–NM–176–AD; Amendment 

39–16829; AD 2011–21–06] 

RIN 2120–AA64 

Airworthiness Directives; BAE 

SYSTEMS (Operations) Limited Model 

4101 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are superseding an 

existing airworthiness directive (AD) 

that applies to the products listed above. 

This AD results from mandatory 

continuing airworthiness information 

(MCAI) originated by an aviation 

authority of another country to identify 

and correct an unsafe condition on an 

aviation product. The MCAI describes 

the unsafe condition as: 

* * * BAE Systems (Operations) Ltd has 

issued Revision 33 of the AMM [airplane 

maintenance manual] to amend Chapter 05– 

10–10 by adding one new Structurally 

Significant Item (SSI) and increasing the 

repeat inspection period on another SSI. 

Failure to comply with this revision 

constitutes an unsafe condition. 

* * * * * 

The unsafe condition is failure of 

certain structurally significant items, 

including the main landing gear and the 

nose landing gear, which could result in 

reduced structural integrity of the 

airplane; and fuel vapor ignition 

sources, which could result in a fuel 

tank explosion and consequent loss of 

the airplane. We are issuing this AD to 

require actions to correct the unsafe 

condition on these products. 

DATES: This AD becomes effective 

November 23, 2011. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of November 23, 2011. 

The Director of the Federal Register 

previously approved the incorporation 

by reference of certain other 

publications listed in this AD as of June 

11, 2009 (74 FR 21246, May 7, 2009). 

ADDRESSES: You may examine the AD 

docket on the Internet at http:// 

www.regulations.gov or in person at the 

U.S. Department of Transportation, 

Docket Operations, M–30, West 

Building Ground Floor, Room W12–140, 

1200 New Jersey Avenue, SE., 

Washington, DC. 

FOR FURTHER INFORMATION CONTACT: 

Todd Thompson, Aerospace Engineer, 

International Branch, ANM–116, 

Transport Airplane Directorate, FAA, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 227–1175; fax (425) 227–1149. 

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. That 

NPRM was published in the Federal 

Register on April 8, 2011 (76 FR 19716), 

and proposed to supersede AD 2009– 

10–02, Amendment 39–15897 (74 FR 

21246, May 7, 2009). That NPRM 

proposed to correct an unsafe condition 

for the specified products. The MCAI 

states: 

The Jetstream J41 Aircraft Maintenance 

Manual (AMM), includes the following 

chapters: 

—05–10–10 ‘‘Airworthiness Limitations’’, 

—05–10–20 ‘‘Certification Maintenance 

Requirements’’, and, 

—05–10–30 ‘‘Critical Design Configuration 

Control Limitations (CDCCL)—Fuel 

System.’’ 

Compliance with these chapters has been 

identified as mandatory actions for continued 

airworthiness and EASA AD 2009–0052 was 

issued to require operators to comply with 

those instructions. 

Since the issuance of that AD, BAE 

Systems (Operations) Ltd has issued Revision 

33 of the AMM to amend Chapter 05–10–10 

by adding one new Structurally Significant 

Item (SSI) and increasing the repeat 

inspection period on another SSI. Failure to 

comply with this revision constitutes an 

unsafe condition. 

For the reasons described above, this 

[EASA] AD, which supersedes EASA AD 

2009–0052, requires the implementation of 

the new or more restrictive maintenance 

requirements and/or airworthiness 

limitations as specified in the defined parts 

of Chapter 05 of the AMM at Revision 33. 

The unsafe condition is failure of 

certain structurally significant items, 

including the main landing gear and the 

nose landing gear, which could result in 

reduced structural integrity of the 

airplane; and fuel vapor ignition 

sources, which could result in a fuel 

tank explosion and consequent loss of 

the airplane. You may obtain further 

information by examining the MCAI in 

the AD docket. 


sroberts on DSK5SPTVN1PROD with RULES