13536 Federal Register / Vol. 76, No. 49 / Monday, March 14, 2011 / Proposed Rules 

Restatement of Requirements of AD 2009– 

22–13, With Revised Service Information 

Inspection and Related Investigative/ 

Corrective Actions 

(g) For Model 767–200, –300, –300F, and 

–400ER series airplanes, as identified in 

Boeing Alert Service Bulletin 767–28A0090, 

dated July 3, 2008: Within 60 months after 

December 3, 2009 (the effective date of AD 

2009–22–13), do the actions in paragraphs 

(g)(1) and (g)(2) of this AD. 

(1) Inspect the motor operated valves 

(MOVs) in the main and center fuel tanks to 

determine if any MOV having part number 

(P/N) MA20A1001–1 is installed, in 

accordance with the Accomplishment 

Instructions of Boeing Alert Service Bulletin 

767–28A0090, dated July 3, 2008; or Boeing 

Service Bulletin 767–28A0090, Revision 2, 

dated September 2, 2010. A review of 

airplane maintenance records is acceptable in 

lieu of this inspection if the part number can 

be conclusively determined from that review. 

After the effective date of this AD, only 

Revision 2 may be used. 

(2) Do all applicable related investigative 

and corrective actions specified in and in 

accordance with the Accomplishment 

Instructions of Boeing Alert Service Bulletin 

767–28A0090, dated July 3, 2008; or Boeing 

Service Bulletin 767–28A0090, Revision 2, 

dated September 2, 2010; except as provided 

by paragraph (h) of this AD. After the 

effective date of this AD, only Revision 2 may 

be used. 

Alternative Part Numbers 

(h) Where Boeing Alert Service Bulletin 

767–28A0090, dated July 3, 2008; or Boeing 

Service Bulletin 767–28A0090, Revision 2, 

dated September 2, 2010; specifies replacing 

any actuator having P/N MA20A1001–1 with 

a new actuator having P/N MA30A1001, a 

serviceable actuator having any of the 

following part numbers is also acceptable as 

a replacement part: MA30A1001; 

MA20A2027 (S343T003–56); MA11A1265–1 

(S343T003–41); or AV–31–1 (S343T003– 

111). 

New Requirements of This AD 

Inspection and Related Investigative/ 

Corrective Actions for Additional Airplanes 

(i) For airplanes that are identified in 

Boeing Service Bulletin 767–28A0090, 

Revision 2, dated September 2, 2010, but are 

not identified in paragraph (g) of this AD: 

Within 60 months after December 3, 2009, do 

the actions required by paragraph (g) of this 

AD in accordance with Boeing Service 

Bulletin 767–28A0090, Revision 2, dated 

September 2, 2010. 

Revised Inspection and Related 

Investigative/Corrective Actions Instructions 

for Certain Airplanes 

(j) For airplanes having variable numbers 

(VNs) VN921, VN922, and VN966 through 

VN972 inclusive, that accomplished the 

actions required in paragraph (g) of this AD 

before the effective date of this AD in 

accordance with Boeing Alert Service 

Bulletin 767–28A0090, dated July 3, 2008: 

Within 60 months after December 3, 2009, do 

the actions specified in paragraphs (j)(1) and 

(j)(2) of this AD. 

(1) Inspect the motor operated valves 

(MOVs) in the main and center fuel tanks to 

determine if any MOV having part number 

(P/N) MA20A1001–1 is installed, in 

accordance with Work Packages 2, 3, 4, and 

5 of the Accomplishment Instructions of 

Boeing Service Bulletin 767–28A0090, 

Revision 2, dated September 2, 2010. A 

review of airplane maintenance records is 

acceptable in lieu of this inspection if the 

part number can be conclusively determined 

from that review. 

(2) Do all applicable related investigative 

and corrective actions specified in and in 

accordance with Work Packages 2, 3, 4, and 

5 of the Accomplishment Instructions of 

Boeing Service Bulletin 767–28A0090, 

Revision 2, dated September 2, 2010; except 

as provided by paragraph (h) of this AD. 

(k) For airplanes having VNs VF181 

through VF184 inclusive that accomplished 

the actions required in paragraph (g) of this 

AD before the effective date of this AD in 

accordance with Boeing Alert Service 

Bulletin 767–28A0090, dated July 3, 2008; or 

Boeing Service Bulletin 767–28A0090, 

Revision 1, dated April 1, 2010: Within 60 

months after December 3, 2009, do the 

actions in paragraphs (k)(1) and (k)(2) of this 

AD. 

(1) Inspect the motor operated valves 

(MOVs) in the main and center fuel tanks to 

determine if any MOV having part number 

(P/N) MA20A1001–1 is installed, in 

accordance with Work Packages 2, 3, 4, and 

5 of the Accomplishment Instructions of 

Boeing Service Bulletin 767–28A0090, 

Revision 2, dated September 2, 2010. A 

review of airplane maintenance records is 

acceptable in lieu of this inspection if the 

part number can be conclusively determined 

from that review. 

(2) Do all applicable related investigative 

and corrective actions specified in and in 

accordance with Work Packages 2, 3, 4, and 

5 of the Accomplishment Instructions of 

Boeing Service Bulletin 767–28A0090, 

Revision 2, dated September 2, 2010; except 

as provided by paragraph (h) of this AD. 

Credit for Actions Accomplished in 

Accordance With Previous Service 

Information 

(l) Actions done before the effective date of 

this AD in accordance with Boeing Service 

Bulletin 767–28A0090, Revision 1, dated 

April 1, 2010, are acceptable for compliance 

with the requirements of paragraphs (i) and 

(j) of this AD. 

Alternative Methods of Compliance 

(AMOCs) 

(m)(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 e-mailed 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. 

(3) AMOCs approved previously for AD 

2009–22–13 are approved as AMOCs for the 

corresponding provisions of this AD. 

Related Information 

(n) For more information about this AD, 

contact Douglas Bryant, Aerospace Engineer, 

Propulsion Branch, ANM–140S, FAA, Seattle 

ACO, 1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 425– 

917–6505; fax 425–917–6590; e-mail: 

douglas.n.bryant@faa.gov. 

(o) 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; e-mail 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. 

Issued in Renton, Washington, on March 4, 

2011. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2011–5721 Filed 3–11–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0159; Directorate 

Identifier 2010–NM–246–AD] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Model CL–600–2C10 (Regional Jet 

Series 700, 701, & 702), Model CL–600– 

2D15 (Regional Jet Series 705), and 

Model CL–600–2D24 (Regional Jet 

Series 900) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for the 

products listed above. This proposed 

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: 

An inspection by the vendor revealed that 

a number of Rubber Bull Gears (RBG) in the 


erowe on DSK5CLS3C1PROD with PROPOSALS-1
Federal Register / Vol. 76, No. 49 / Monday, March 14, 2011 / Proposed Rules 13537 

Horizontal Stabilizer Trim Actuator (HSTA) 

of the CL–600–2C10, CL–600–2D15 and CL– 

600–2D24 aeroplanes were installed with a 

wheel material hardness out of specification. 

This non-conformity has a direct impact on 

the HSTA life limit. The teeth of these nonconformant RBGs could break and in extreme 

cases, could lead to uncontrolled HSTA 

movement without the ability to re-trim the 

aeroplane. If not corrected, this condition 

could result in a difficulty to control the 

pitch and subsequent loss of the aeroplane. 

* * * * * 

The proposed AD would require 

actions that are intended to address the 

unsafe condition described in the MCAI. 

DATES: We must receive comments on 

this proposed AD by April 28, 2011. 

ADDRESSES: You may send comments 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 

W12–40, 1200 New Jersey Avenue, SE., 

Washington, DC, between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this proposed AD, contact Bombardier, 

Inc., 400 Coˆte-Vertu Road West, Dorval, 

Que ́bec H4S 1Y9, Canada; telephone 

514–855–5000; fax 514–855–7401; 

e-mail thd.crj@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 Operations office 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 Operations 

office (telephone (800) 647–5527) is in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Fabio Buttitta, Aerospace Engineer, 

Airframe and Mechanical Systems 

Branch, ANE–171, FAA, New York 

Aircraft Certification Office (ACO), 1600 

Stewart Avenue, Suite 410, Westbury, 

New York 11590; telephone (516) 228– 

7303; fax (516) 794–5531. 

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–2011–0159; Directorate Identifier 

2010–NM–246–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 based on 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 

Transport Canada Civil Aviation 

which is the aviation authority for 

Canada, has issued Canadian 

Airworthiness Directive CF–2010–34, 

dated October 5, 2010 (referred to after 

this as ‘‘the MCAI’’), to correct an unsafe 

condition for the specified products. 

The MCAI states: 

An inspection by the vendor revealed that 

a number of Rubber Bull Gears (RBG) in the 

Horizontal Stabilizer Trim Actuator (HSTA) 

of the CL–600–2C10, CL–600–2D15 and CL– 

600–2D24 aeroplanes were installed with a 

wheel material hardness out of specification. 

This non-conformity has a direct impact on 

the HSTA life limit. The teeth of these nonconformant RBGs could break and in extreme 

cases, could lead to uncontrolled HSTA 

movement without the ability to re-trim the 

aeroplane. If not corrected, this condition 

could result in a difficulty to control the 

pitch and subsequent loss of the aeroplane. 

This [Canadian airworthiness] directive 

mandates replacement of the RBGs which 

have material hardness out of specification 

[with a modified HSTA]. 

You may obtain further information 

by examining the MCAI in the AD 

docket. 

Relevant Service Information 

Bombardier has issued Service 

Bulletin 670BA–27–058, dated August 

31, 2010; and SAGEM has issued 

SAGEM Service Bulletin 8489–27–007, 

Revision 1, dated August 10, 2010. The 

actions described in this service 

information are intended to correct the 

unsafe condition identified in the 

MCAI. 

FAA’s Determination and Requirements 

of This Proposed AD 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to our 

bilateral agreement with the State of 

Design Authority, we have been notified 

of the unsafe condition described in the 

MCAI and service information 

referenced above. We are proposing this 

AD because we evaluated all pertinent 

information and determined an unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. 

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 proposed 

different actions in this AD from those 

in the MCAI in order to follow FAA 

policies. Any such differences are 

highlighted in a Note within the 

proposed AD. 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 387 products of U.S. 

registry. We also estimate that it would 

take about 9 work-hours per product to 

comply with the basic requirements of 

this proposed AD. The average labor 

rate is $85 per work-hour. Required 

parts would cost about $0 per product. 

Where the service information lists 

required parts costs that are covered 

under warranty, we have assumed that 

there will be no charge for these costs. 

As we do not control warranty coverage 

for affected parties, some parties may 

incur costs higher than estimated here. 

Based on these figures, we estimate the 

cost of the proposed AD on U.S. 

operators to be $296,055, or $765 per 

product. 

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 


erowe on DSK5CLS3C1PROD with PROPOSALS-1
13538 Federal Register / Vol. 76, No. 49 / Monday, March 14, 2011 / Proposed Rules 

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: 

Bombardier, Inc.: Docket No. FAA–2011– 

0159; Directorate Identifier 2010–NM– 

246–AD. 

Comments Due Date 

(a) We must receive comments by April 28, 

2011. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Bombardier, Inc. 

Model CL–600–2C10 (Regional Jet Series 700, 

701, & 702), Model CL–600–2D15 (Regional 

Jet Series 705), and Model CL–600–2D24 

(Regional Jet Series 900) airplanes, 

certificated in any category, equipped with a 

horizontal stabilizer trim actuator having part 

numbers (P/Ns) 8489–5, 8489–6, 8489–7, and 

8489–7R. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 27: Flight controls. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

An inspection by the vendor revealed that 

a number of Rubber Bull Gears (RBG) in the 

Horizontal Stabilizer Trim Actuator (HSTA) 

of the CL–600–2C10, CL–600–2D15 and CL– 

600–2D24 aeroplanes were installed with a 

wheel material hardness out of specification. 

This non-conformity has a direct impact on 

the HSTA life limit. The teeth of these nonconformant RBGs could break and in extreme 

cases, could lead to uncontrolled HSTA 

movement without the ability to re-trim the 

aeroplane. If not corrected, this condition 

could result in a difficulty to control the 

pitch and subsequent loss of the aeroplane. 

* * * * * 

Compliance 

(f) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

Modifying the HSTA 

(g) For airplanes having any HSTA with 

S/N 107, 111, 124, 126, 135, 139, 142, 145, 

146, 266, 268, 271, 274, 276, 277, 280, 282 

through 285 inclusive, 290, 292, 294, 297, 

299, 307, 309, 320, 337, 400, 402, 403, 410, 

412, 418, 421 through 428 inclusive, 430, 435 

through 439 inclusive, 441, 443 through 446 

inclusive, 448 through 450 inclusive, 452 

through 454 inclusive, 456, 459, 461, 463 

through 470 inclusive, 472, 474 through 476 

inclusive, 478, 545 through 549 inclusive, 

570, 571, 573, 574, 600, 603, 608, 612 

through 616 inclusive, 623, 627, and 629 

through 659 inclusive: At the applicable 

compliance time specified in paragraph (g)(1) 

or (g)(2) of this AD, replace the HSTA with 

a modified HSTA, in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 670BA–27–058, dated 

August 31, 2010. 

(1) For HSTAs that have accumulated 

8,700 total flight cycles or less as of the 

effective date of this AD: Within 3,000 flight 

cycles from the effective date of this AD, or 

before the HSTA has accumulated 10,500 

flight cycles, whichever occurs first. 

(2) For HSTAs that have accumulated more 

than 8,700 total flight cycles as of the 

effective date of this AD: Within 1,800 flight 

cycles after the effective date of this AD. 

(h) For airplanes having any HSTA with 

S/N 185, 479, 481, 482, 485, 487, 489, 491 

through 496 inclusive, 498, 499, 501, 503, 

504, 506, 507, 509, 512 through 514 

inclusive, 517, 519 through 522 inclusive, 

524, 526 through 528 inclusive, 530, 534 

through 536 inclusive, 539, 542, and 543: 

Within 1,800 flight cycles after the effective 

date of this AD, replace the affected HSTA 

with a modified HSTA in accordance with 

the Accomplishment Instructions of 

Bombardier Service Bulletin 670BA–27–058, 

dated August 31, 2010. 

Parts Installation 

(i) As of the effective date of this AD, no 

person may install a HSTA, having P/N 

8489–5, 8489–6, 8489–7, or 8489–7R, with 

any serial numbers identified in paragraph 

(g) or (h) of this AD, on any airplane, unless 

that HSTA has been modified in accordance 

with SAGEM Service Bulletin 8489–27–007, 

Revision 1, dated August 10, 2010, and that 

HSTA has a suffix ‘‘B’’ beside the serial 

number. 

FAA AD Differences 

Note 1: This AD differs from the MCAI 

and/or service information as follows: No 

differences. 

Other FAA AD Provisions 

(j) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York Aircraft 

Certification Office, ANE–170, 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. Send information to Attn: 

Program Manager, Continuing Operational 

Safety, FAA, New York ACO, 1600 Stewart 

Avenue, Suite 410, Westbury, New York 

11590; telephone 516–228–7300; fax 516– 

794–5531. 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 

(k) Refer to MCAI Canadian Airworthiness 

Directive CF–2010–34, dated October 5, 

2010; Bombardier Service Bulletin 670BA– 

27–058, dated August 31, 2010; and SAGEM 

Service Bulletin 8489–27–007, Revision 1, 

dated August 10, 2010, for related 

information. 


erowe on DSK5CLS3C1PROD with PROPOSALS-1
Federal Register / Vol. 76, No. 49 / Monday, March 14, 2011 / Proposed Rules 13539 

Issued in Renton, Washington, on March 4, 

2011. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2011–5722 Filed 3–11–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0216; Directorate 

Identifier 2010–NM–197–AD] 

RIN 2120–AA64 

Airworthiness Directives; Empresa 

Brasileira de Aeronautica S.A. 

(EMBRAER) Model ERJ 190 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for the 

products listed above. This proposed 

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: 

* * * The pylon internal shear pin was 

found cracked during a regular check. 

Further investigation revealed that the failure 

occurred due to hydrogen embrittlement. The 

ANAC [Ageˆncia Nacional de Aviac ̧a ̃o Civil] 

is issuing this AD to prevent insufficient 

strength of the pylon to wing attachment, 

which in combination with an engine 

imbalance caused by a fan blade out could 

cause pylon to wing attachment failure and 

consequent engine separation. 

* * * * * 

The proposed AD would require actions 

that are intended to address the unsafe 

condition described in the MCAI. 

DATES: We must receive comments on 

this proposed AD by April 28, 2011. 

ADDRESSES: You may send comments 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 

W12–40, 1200 New Jersey Avenue, SE., 

Washington, DC, between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this proposed 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; email distrib@embraer.com.br; Internet 

http://www.flyembraer.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 Operations office 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 Operations 

office (telephone (800) 647–5527) is in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Cindy Ashforth, Aerospace Engineer, 

International Branch, ANM–116, 

Transport Airplane Directorate, FAA, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; phone: 425– 

227–2768; fax: 425–227–1149; e-mail: 

cindy.ashforth@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–2011–0216; Directorate Identifier 

2010–NM–197–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 based on 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 

The Ageˆncia Nacional de Aviac ̧a ̃o 

Civil (ANAC), which is the aviation 

authority for Brazil, has issued Brazilian 

Airworthiness Directive 2010–08–02, 

dated September 20, 2010 (referred to 

after this as ‘‘the MCAI’’), to correct an 

unsafe condition for the specified 

products. The MCAI states: 

* * * The pylon internal shear pin was 

found cracked during a regular check. 

Further investigation revealed that the failure 

occurred due to hydrogen embrittlement. The 

ANAC [Ageˆncia Nacional de Aviac ̧a ̃o Civil] 

is issuing this AD to prevent insufficient 

strength of the pylon to wing attachment, 

which in combination with an engine 

imbalance caused by a fan blade out could 

cause pylon to wing attachment failure and 

consequent engine separation. 

* * * * * 

Required actions include replacing 

pylon shear pins in the rear outboard 

and inboard shear pin assembly in the 

right- and left-hand pylons with new 

parts. You may obtain further 

information by examining the MCAI in 

the AD docket. 

Relevant Service Information 

EMBRAER has issued Service 

Bulletins 190–54–0010, dated May 19, 

2010; and 190LIN–54–0001, dated June 

21, 2010. The actions described in this 

service information are intended to 

correct the unsafe condition identified 

in the MCAI. 

FAA’s Determination and Requirements 

of This Proposed AD 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to our 

bilateral agreement with the State of 

Design Authority, we have been notified 

of the unsafe condition described in the 

MCAI and service information 

referenced above. We are proposing this 

AD because we evaluated all pertinent 

information and determined an unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. 

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. 


erowe on DSK5CLS3C1PROD with PROPOSALS-1