Federal Register / Vol. 76, No. 25 / Monday, February 7, 2011 / Rules and Regulations 6539 

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. 

(3) Reporting Requirements: A federal 

agency may not conduct or sponsor, and a 

person is not required to respond to, nor 

shall a person be subject to a penalty for 

failure to comply with a collection of 

information subject to the requirements of 

the Paperwork Reduction Act unless that 

collection of information displays a current 

valid OMB Control Number. The OMB 

Control Number for this information 

collection is 2120–0056. Public reporting for 

this collection of information is estimated to 

be approximately 5 minutes per response, 

including the time for reviewing instructions, 

completing and reviewing the collection of 

information. All responses to this collection 

of information are mandatory. Comments 

concerning the accuracy of this burden and 

suggestions for reducing the burden should 

be directed to the FAA at: 800 Independence 

Ave., SW., Washington, DC 20591, Attn: 

Information Collection Clearance Officer, 

AES–200. 

Related Information 

(o) Refer to MCAI Canadian Airworthiness 

Directive CF–2009–42R1, dated May 14, 

2010; and the service bulletins listed in table 

1 of this AD; for related information. 

Material Incorporated by Reference 

(p) You must use the service information 

contained in Table 3 of this AD to do the 

actions required by this AD, unless the AD 

specifies otherwise. 

(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 Bombardier, Inc., 400 CoˆteVertu 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. 

(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. 

TABLE 3—MATERIAL INCORPORATED BY REFERENCE

Document Revision Date 

Bombardier Service Bulletin 215–541 ...................................................................................................................... 1 March 12, 2010. 

Bombardier Service Bulletin 215–3155 .................................................................................................................... 1 March 12, 2010. 

Bombardier Service Bulletin 215–4414 .................................................................................................................... 1 March 12, 2010. 

Issued in Renton, Washington, on January 

26, 2011. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–2444 Filed 2–4–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–1109; Directorate 

Identifier 2010–NM–155–AD; Amendment 

39–16597; AD 2011–03–13] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Model CL–600–2C10 (Regional Jet 

Series 700, 701, & 702) Airplanes, 

Model CL–600–2D15 (Regional Jet 

Series 705) Airplanes, and Model CL– 

600–2D24 (Regional Jet Series 900) 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for 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: 

Rudder Travel Limiter (RTL) return spring, 

part number (P/N) E0650–069–2750S, failed 

prior to completion of the required 

endurance test. In addition, the replacement 

RTL return spring, P/N 670–93465–1 * * * 

was found to be susceptible to chafing on the 

primary actuator, which could also result in 

eventual dormant spring failure. There are 

two return springs in the RTL and if both 

springs failed, a subsequent mechanical 

disconnect of the RTL components would 

result in an unannunciated failure of the 

RTL. This, in turn, would permit an increase 

of rudder authority beyond normal structural 

limits and, in the event of a strong rudder 

input, controllability of the aeroplane could 

be affected. 

* * * * * 

We are issuing this AD to require 

actions to correct the unsafe condition 

on these products. 

DATES: This AD becomes effective 

March 14, 2011. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of March 14, 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: 

Cesar Gomez, Aerospace Engineer, 

Airframe and Mechanical Systems 

Branch, ANE–171, FAA, New York 

Aircraft Certification Office, 1600 

Stewart Avenue, Suite 410, Westbury, 

New York 11590; telephone (516) 228– 

7318; fax (516) 794–5531. 

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 November 10, 2010 (75 FR 

69030). That NPRM proposed to correct 

an unsafe condition for the specified 

products. The MCAI states: 

Rudder Travel Limiter (RTL) return spring, 

part number (P/N) E0650–069–2750S, failed 

prior to completion of the required 

endurance test. In addition, the replacement 

RTL return spring, P/N 670–93465–1 (see 

Note) was found to be susceptible to chafing 

on the primary actuator, which could also 

result in eventual dormant spring failure. 

There are two return springs in the RTL and 


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if both springs failed, a subsequent 

mechanical disconnect of the RTL 

components would result in an 

unannunciated failure of the RTL. This, in 

turn, would permit an increase of rudder 

authority beyond normal structural limits 

and, in the event of a strong rudder input, 

controllability of the aeroplane could be 

affected. 

Note: RTL return springs, P/N 670–93465– 

1, were installed in production aeroplanes 

serial number 10266 (CL–600–2C10) and 

15182 (CL–600–2D24) respectively and were 

introduced in-service by [Bombardier] 

Service Bulletin (SB) 670BA–27–047. SB 

670BA–27–047 has since been superseded by 

[Bombardier] SB 670BA–27–055. 

This directive mandates repetitive 

[detailed] inspection of the RTL [for broken] 

return springs and [damage through the 

casing, or chafing of the casing of the] 

primary actuator, with replacement of parts 

as necessary. 

Corrective actions include replacing 

any broken return springs with new 

return springs, repairing any chafing of 

the primary actuator on its casing, and 

replacing any primary actuator that has 

damage through its casing with a new 

actuator. 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 

received no comments on the NPRM or 

on the determination of the cost to the 

public. 

Conclusion 

We reviewed the available data and 

determined that air safety and the 

public interest require adopting the AD 

as proposed. 

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 

477 products of U.S. registry. We also 

estimate that it will take 2 work-hours 

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 

$81,090, or $170 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 

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, 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: 

2011–03–13 Bombardier, Inc.: Amendment 

39–16597. Docket No. FAA–2010–1109; 

Directorate Identifier 2010–NM–155–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective March 14, 2011. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Bombardier, Inc. 

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

701, & 702) airplanes, serial numbers 10003 

and subsequent; and Model CL–600–2D15 

(Regional Jet Series 705) and Model CL–600– 

2D24 (Regional Jet Series 900) airplanes, 

serial numbers 15001 and subsequent; 

certificated in any category. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 27: Flight controls. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

Rudder Travel Limiter (RTL) return spring, 

part number (P/N) E0650–069–2750S, failed 

prior to completion of the required 

endurance test. In addition, the replacement 

RTL return spring, P/N 670–93465–1 * * * 

was found to be susceptible to chafing on the 

primary actuator, which could also result in 

eventual dormant spring failure. There are 

two return springs in the RTL and if both 

springs failed, a subsequent mechanical 

disconnect of the RTL components would 

result in an unannunciated failure of the 

RTL. This, in turn, would permit an increase 

of rudder authority beyond normal structural 

limits and, in the event of a strong rudder 

input, controllability of the aeroplane could 

be affected. 

* * * * * 

Compliance 

(f) You are responsible for having the 

actions required by this AD performed within 


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Federal Register / Vol. 76, No. 25 / Monday, February 7, 2011 / Rules and Regulations 6541 

the compliance times specified, unless the 

actions have already been done. 

Initial Inspections and Replacement/Repair 

(g) For airplanes that have accumulated 

4,000 or less total flight hours as of the 

effective date of this AD: Before the 

accumulation of 6,000 total flight hours, do 

a detailed inspection of the RTL for broken 

return springs and damage through the 

casing, or chafing of the casing of the primary 

actuator, in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 670BA–27–055, Revision A, 

dated August 6, 2010. Before further flight, 

replace any broken return springs with new 

springs, and repair or replace with a new 

actuator any chafed or damaged primary 

actuator, as applicable, in accordance with 

the Accomplishment Instructions of 

Bombardier Service Bulletin 670BA–27–055, 

Revision A, dated August 6, 2010. Repeat the 

inspection thereafter at intervals not to 

exceed 6,000 flight hours. 

(h) For airplanes that have accumulated 

more than 4,000 total flight hours as of the 

effective date of this AD: Within 2,000 flight 

hours after the effective date of this AD, do 

a detailed inspection of the RTL for broken 

return springs and damage through the 

casing, or chafing of the casing of the primary 

actuator, in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 670BA–27–055, Revision A, 

dated August 6, 2010. Before further flight, 

replace any broken return springs with new 

springs, and repair or replace any chafed or 

damaged primary actuator with a new 

actuator, as applicable, in accordance with 

the Accomplishment Instructions of 

Bombardier Service Bulletin 670BA–27–055, 

Revision A, dated August 6, 2010. Repeat the 

inspection thereafter at intervals not to 

exceed 6,000 flight hours. 

Credit for Actions Accomplished in 

Accordance With Previous Service 

Information 

(i) Actions accomplished before the 

effective date of this AD in accordance with 

Bombardier Service Bulletin 670BA–27–055, 

dated May 11, 2010, are considered 

acceptable for compliance with the 

corresponding actions specified in this AD. 

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 (ACO), ANE–170, FAA, 

has the authority to approve AMOCs for this 

AD, if requested using the procedures found 

in 14 CFR 39.19. 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–2010–18, dated June 16, 2010; 

and Bombardier Service Bulletin 670BA–27– 

055, Revision A, dated August 6, 2010; for 

related information. 

Material Incorporated by Reference 

(l) You must use Bombardier Service 

Bulletin 670BA–27–055, Revision A, dated 

August 6, 2010, to do the actions required by 

this AD, unless the AD specifies otherwise. 

(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 Bombardier, Inc., 400 CoˆteVertu 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. 

(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 January 

25, 2011. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–2443 Filed 2–4–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–1114; Directorate 

Identifier 2010–NM–206–AD; Amendment 

39–16591; AD 2011–03–07] 

RIN 2120–AA64 

Airworthiness Directives; Fokker 

Services B.V. Model F.28 Mark 0100, 

1000, 2000, 3000, and 4000 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for 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: 

Prompted by an accident * * *, the FAA 

published Special Federal Aviation 

Regulation (SFAR) 88, and the Joint Aviation 

Authorities (JAA) published Interim Policy 

INT/POL/25/12. The design review 

conducted by Fokker on the F28 in response 

to these regulations revealed that, in case of 

a lightning strike, an ignition source can 

develop in the wing tank vapour space 

during fuel transfer from bag tank CWT 

[center wing tank], if the electrical power for 

refuelling is not switched off after refuelling. 

Service experience has revealed situations 

where the power switch of the Fuelling 

Control Panel (FCP) appeared to be ‘‘ON’’ 

with the access panel closed. The cam on the 

access panel that should operate the power 

switch, if forgotten by flight crew or 

maintenance staff, can pivot away during 

closing of the panel, which may result in the 

switch staying in the ‘‘ON’’ position. 

This condition, if not corrected, could 

result in a wing fuel tank explosion and 

consequent loss of the aeroplane. 

* * * * * 

We are issuing this AD to require 

actions to correct the unsafe condition 

on these products. 

DATES: This AD becomes effective 

March 14, 2011. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of March 14, 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. 


wwoods2 on DSK1DXX6B1PROD with RULES_PART 1