Federal Register / Vol. 75, No. 186 / Monday, September 27, 2010 / Rules and Regulations 59073 

(h) If the ADG serial number, as 

determined in paragraph (g) of this AD, is not 

listed in paragraph 1.A of the applicable 

Bombardier service bulletin listed in Table 1 

of this AD, no further action is required by 

this AD, except as required by paragraph (j) 

of this AD. 

TABLE 1—SERVICE BULLETINS

Model— 

Bombardier 

Service 

Bulletin— 

Dated— 

CL–600–2B16 (CL–604) airplanes .................................................................................................................. 604–24–021 July 13, 2009. 

CL–600–2B16 (CL–605) airplanes .................................................................................................................. 605–24–001 July 13, 2009. 

(i) If the ADG serial number determined in 

paragraph (g) of this AD is identified in 

paragraph 1.A. of the applicable service 

bulletin listed in Table 1 of this AD, before 

further flight, do an inspection to determine 

if the symbol ‘‘24–5’’ is marked on the ADG 

identification plate. A review of airplane 

maintenance records is acceptable in lieu of 

this inspection if the symbol ‘‘24–5’’ can be 

conclusively determined from that review. 

(1) If the symbol ‘‘24–5’’ is marked on the 

ADG identification plate, and the balance 

washer screws have already been replaced, 

no further action is required by this AD, 

except as required by paragraph (j) of this 

AD. 

(2) If the symbol ‘‘24–5’’ is not marked on 

the ADG identification plate, before further 

flight, replace all balance washer screws with 

new screws having part number MS24667–14 

and mark the ADG identification plate with 

symbol ‘‘24–5’’, in accordance with the 

Accomplishment Instructions of the 

applicable service bulletin listed in Table 1 

of this AD. 

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

person may install on any airplane a 

replacement or spare ADG, Hamilton 

Sundstrand part number in the 761339 or 

1711405 series, having one of the serial 

numbers identified in paragraph 1.A. of the 

applicable service bulletin listed in Table 1 

of this AD, unless the ADG is identified with 

the symbol ‘‘24–5’’ on the identification plate. 

FAA AD Differences 

Note 2: This AD differs from the MCAI 

and/or service information as follows: The 

MCAI specifies to inspect only airplanes 

having certain serial numbers that are part of 

the MCAI applicability. Because the affected 

part could be rotated onto any of the 

airplanes listed in the applicability, this AD 

requires the inspection be done on all 

airplanes. We have coordinated this 

difference with TCCA. 

Other FAA AD Provisions 

(k) 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 

on any airplane to which the AMOC applies, 

notify your principal maintenance inspector 

(PMI) or principal avionics inspector (PAI), 

as appropriate, or lacking a principal 

inspector, your local Flight Standards 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: For any 

reporting requirement in this AD, under the 

provisions of the Paperwork Reduction Act 

(44 U.S.C. 3501 et seq.), the Office of 

Management and Budget (OMB) has 

approved the information collection 

requirements and has assigned OMB Control 

Number 2120–0056. 

Related Information 

(l) Refer to MCAI Canadian Airworthiness 

Directive CF–2009–50, dated December 17, 

2009; and Bombardier Service Bulletins 604– 

24–021, dated July 13, 2009, and 605–24– 

001, dated July 13, 2009; for related 

information. 

Material Incorporated by Reference 

(m) You must use Bombardier Service 

Bulletin 604–24–021, dated July 13, 2009; or 

Bombardier Service Bulletin 605–24–001, 

dated July 13, 2009; as applicable; 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 

September 10, 2010. 

Jeffrey E. Duven, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2010–23742 Filed 9–24–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0375; Directorate 

Identifier 2010–NM–014–AD; Amendment 

39–16443; AD 2010–20–09] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Model CL–600–2B19 (Regional Jet 

Series 100 & 440) Airplanes; Model 

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

701, & 702) Airplanes; Model CL–600– 

2D15 (Regional Jet Series 705) 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: 

Following five reported cases of balance 

washer screw failure on similar ADGs [airdriven generators]/ram air turbines installed 

on other aircraft types, investigation by 

Hamilton Sundstrand determined that a 

specific batch of the screws had a 

metallographic non-conformity that 

increased their susceptibility to brittle 

fracture. * * * 

Failure of a balance washer screw can 

result in loss of the related balance washer, 

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59074 Federal Register / Vol. 75, No. 186 / Monday, September 27, 2010 / Rules and Regulations 

with consequent turbine imbalance. Such 

imbalance could potentially result in ADG 

structural failure (including blade failure), 

loss of ADG electrical power and structural 

damage to the aircraft and, if deployment was 

activated by a dual engine shutdown, could 

also result in loss of hydraulic power for the 

flight controls. 

* * * * * 

The unsafe condition is the reduced 

ability of the flightcrew to maintain the 

safe flight and landing 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 1, 2010. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of November 1, 2010. 

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: 

Christopher Alfano, 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– 

7340; 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 April 8, 2010 (75 FR 17884). 

That NPRM proposed to correct an 

unsafe condition for the specified 

products. The MCAI states: 

Following five reported cases of balance 

washer screw failure on similar ADGs [airdriven generators]/ram air turbines installed 

on other aircraft types, investigation by 

Hamilton Sundstrand determined that a 

specific batch of the screws had a 

metallographic non-conformity that 

increased their susceptibility to brittle 

fracture. Subsequently, it was established 

that 152 ‘‘dry’’ ADGs [Hamilton Sundstrand 

Part Numbers (P/Ns) in the 761339 series and 

1711405; see Note] either had nonconforming screws installed during 

production or may possibly have had nonconforming screws installed during 

maintenance or repair at Hamilton 

Sundstrand repair stations. 

Failure of a balance washer screw can 

result in loss of the related balance washer, 

with consequent turbine imbalance. Such 

imbalance could potentially result in ADG 

structural failure (including blade failure), 

loss of ADG electrical power and structural 

damage to the aircraft and, if deployment was 

activated by a dual engine shutdown, could 

also result in loss of hydraulic power for the 

flight controls [and consequent reduced 

ability of the flightcrew to maintain the safe 

flight and landing of the airplane]. 

This [Canadian] directive mandates 

checking the ADG and replacing the balance 

washer screws, if required. It also prohibits 

future installation of unmodified ADGs. 

Note: ADGs with Hamilton Sundstrand P/ 

Ns in the 761339 series and 1711405 are 

installed on the aircraft models listed in the 

Applicability section above in addition to 

Bombardier Inc. Model CL–600–2B16. The 

latter model is covered in a separate 

directive. 

The unsafe condition is the reduced 

ability of the flightcrew to maintain the 

safe flight and landing of the airplane. 

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 Remove the Phrase ‘‘Before 

Further Flight’’ From Paragraph (i) of 

the AD 

Comair requests that the phrase 

‘‘before further flight’’ be changed from 

paragraph (i) of the AD. Comair suggests 

that the intent of paragraph (i) is that if 

the air-driven generator (ADG) is 

deployed to allow inspection of the data 

plate for the symbol ‘‘24–5,’’ and it is 

discovered that there is no symbol ‘‘24– 

5,’’ before further flight comply with the 

service bulletin. Comair suggests using 

the phrase ‘‘within the timeframe 

determined in (g) or (h).’’ 

We agree with the request to change 

the wording in paragraph (i) of this AD. 

This change does not compromise safety 

or the intent of the AD; therefore, we 

have changed the wording to ‘‘within 

the applicable time in paragraph (g) or 

(h) of this AD.’’ 

Request To Eliminate ‘‘24–5’’ Marking 

on the ADG Identification Plate 

Air Wisconsin requests that the ‘‘24– 

5’’ marking on the ADG identification 

plate be eliminated from the 

identification plate. Air Wisconsin 

states that it is the operator’s record 

keeping system that is required to show 

compliance with the AD, and Air 

Wisconsin’s record keeping system has 

been approved to sufficiently ensure AD 

compliance. 

We disagree with the request to 

remove the ‘‘24–5’’ marking on the ADG 

identification plate. The ‘‘24–5’’ marking 

on the identification plate of the 

affected ADG identifies that the suspect 

balance washer screws have been 

replaced and are in compliance with the 

AD. No change has been made to the AD 

in this regard. 

Request for Clarification Regarding 

Term ‘‘All Airplanes’’ 

Air Wisconsin requests clarification 

regarding the term ‘‘all airplanes,’’ which 

is used in Note 1 of the NPRM 

specifying that the inspection is to be 

done on all airplanes. 

We agree that clarification is needed. 

The term ‘‘all airplanes’’ refers to the 

applicable airplane models listed in 

paragraph (c) of this AD. It is possible 

that an affected part could be rotated 

onto any of the airplanes listed in the 

applicability, and the affected part 

could be missed unless the inspection 

specified in paragraph (g) of this AD 

applies to all of the airplanes identified 

in paragraph (c) of this AD. No change 

has been made to the AD in this regard. 

Request To Reclassify as Appliance AD 

Air Wisconsin requests that this AD 

be classified as an appliance AD. Air 

Wisconsin requests that if we cannot 

reclassify it as an appliance AD, we 

include a statement ensuring 

compliance on all units in inventory so 

that affected units are not installed on 

airplanes. 

We disagree with the request to 

reclassify the AD as an appliance AD. 

When the unsafe condition results from 

the installation of the appliance on an 

aircraft, the AD action is issued against 

the aircraft, not the appliance. We also 

disagree with the request to include a 

statement ensuring compliance on all 

units in inventory, because paragraph (j) 

of this AD already addresses the issue 

of installing a replacement or spare ADG 

on any airplane. No change has been 

made to the AD in this regard. 

Clarification of Paragraph (g) 

We have clarified the compliance 

times in paragraph (g) of this AD by 

requiring the inspection at the earliest of 

the times identified in paragraphs (g)(1), 

(g)(2), (g)(3), and (g)(4) of this AD. 

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. 

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Federal Register / Vol. 75, No. 186 / Monday, September 27, 2010 / Rules and Regulations 59075 

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 

1,008 products of U.S. registry. We also 

estimate that it will take about 10 workhours per product to comply with the 

basic requirements of this AD. The 

average labor rate is $85 per work-hour. 

Required parts will 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 parts. 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 this AD 

to the U.S. operators to be $856,800, or 

$850 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: 

2010–20–09 Bombardier, Inc.: Amendment 

39–16443. Docket No. FAA–2010–0375; 

Directorate Identifier 2010–NM–014–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective November 1, 2010. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Bombardier, Inc. 

Model CL–600–2B19 (Regional Jet Series 100 

& 440) airplanes, serial numbers 7305 

through 7990 inclusive and 8000 and 

subsequent; Model CL–600–2C10 (Regional 

Jet Series 700, 701, & 702) airplanes, serial 

numbers 10003 and subsequent; 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 24: Electrical power. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

Following five reported cases of balance 

washer screw failure on similar ADGs [airdriven generators]/ram air turbines installed 

on other aircraft types, investigation by 

Hamilton Sundstrand determined that a 

specific batch of the screws had a 

metallographic non-conformity that 

increased their susceptibility to brittle 

fracture. Subsequently, it was established 

that 152 ‘‘dry’’ ADGs [Hamilton Sundstrand 

Part Numbers (P/Ns) in the 761339 series and 

1711405; see Note] either had nonconforming screws installed during 

production or may possibly have had nonconforming screws installed during 

maintenance or repair at Hamilton 

Sundstrand repair stations. 

Failure of a balance washer screw can 

result in loss of the related balance washer, 

with consequent turbine imbalance. Such 

imbalance could potentially result in ADG 

structural failure (including blade failure), 

loss of ADG electrical power and structural 

damage to the aircraft and, if deployment was 

activated by a dual engine shutdown, could 

also result in loss of hydraulic power for the 

flight controls. 

This [Canadian] directive mandates 

checking the ADG and replacing the balance 

washer screws, if required. It also prohibits 

future installation of unmodified ADGs. 

Note: ADGs with Hamilton Sundstrand P/ 

Ns in the 761339 series and 1711405 are 

installed on the aircraft models listed in the 

Applicability section above in addition to 

Bombardier Inc. Model CL–600–2B16. The 

latter model is covered in a separate 

directive. 

The unsafe condition is the reduced ability 

of the flightcrew to maintain the safe flight 

and landing of the airplane. 

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. 

Actions 

(g) For Model CL–600–2C10, CL–600–2D15 

and CL–600–2D24 airplanes: At the earliest 

of the times identified in paragraphs (g)(1), 

(g)(2), (g)(3), and (g)(4) of this AD, do an 

inspection to determine the serial number of 

the installed air-driven generator (ADG), in 

accordance with the Accomplishment 

Instructions of the applicable service bulletin 

listed in Table 1 of this AD. A review of 

airplane maintenance records is acceptable in 

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59076 Federal Register / Vol. 75, No. 186 / Monday, September 27, 2010 / Rules and Regulations 

lieu of this inspection if the serial number of 

the ADG can be conclusively identified from 

that review. 

(1) Within 4,000 flight hours or 18 months 

after the effective date of this AD, whichever 

occurs first; or 

(2) Prior to the next in-flight or on-ground 

functional check of the ADG, whichever 

occurs first after the effective date of this AD; 

or 

(3) Prior to the next in-flight or on-ground 

operational check of the ADG, whichever 

occurs first after the effective date of this AD; 

or 

(4) Before the next scheduled ADG in-flight 

deployment. 

(h) For Model CL–600–2B19 airplanes: At 

the earliest of the times identified in 

paragraphs (h)(1), (h)(2), (h)(3), and (h)(4) of 

this AD, do an inspection to determine the 

serial number of the installed ADG, in 

accordance with the Accomplishment 

Instructions of the applicable service bulletin 

listed in Table 1 of this AD. A review of 

airplane maintenance records is acceptable in 

lieu of this inspection if the part number of 

the ADG can be conclusively identified from 

that review. 

(1) Within 4,000 flight hours after the 

effective date of this AD; or 

(2) Prior to the next in-flight or on-ground 

functional check of the ADG, whichever 

occurs first after the effective date of this AD; 

or 

(3) Prior to the next in-flight or on-ground 

operational check of the ADG, whichever 

occurs first after the effective date of this AD; 

or 

(4) Before the next scheduled ADG in-flight 

deployment. 

TABLE 1—SERVICE BULLETINS

Model— Bombardier Service 

Bulletin— Revision— Dated— 

CL–600–2B19 airplanes ..................................................................... 601R–24–127 .............. A .................................. February 25, 2010. 

CL–600–2C10, CL–600–2D15, and CL–600–2D24 airplanes ........... 670BA–24–026 ........... Original ........................ October 23, 2009. 

(i) If the ADG serial number determined in 

paragraph (g) or (h) of this AD is identified 

in paragraph 1.A. of the applicable service 

bulletin listed in Table 1 of this AD, within 

the applicable time in paragraph (g) or (h) of 

this AD do an inspection to determine if the 

symbol ‘‘24–5’’ is marked on the ADG 

identification plate. A review of airplane 

maintenance records is acceptable in lieu of 

this inspection if the symbol ‘‘24–5’’ mark can 

be conclusively identified from that review. 

(1) If the symbol ‘‘24–5’’ is marked on the 

ADG identification plate, the balance washer 

screws have already been replaced, and no 

further action is required by this paragraph. 

(2) If the symbol ‘‘24–5’’ is not marked on 

the ADG identification plate, before further 

flight replace all balance washer screws with 

new balance washer screws, part number 

MS24667–14, and mark the ADG 

identification plate with symbol ‘‘24–5,’’ in 

accordance with the Accomplishment 

Instructions of the applicable service bulletin 

listed in Table 1 of this AD. 

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

person may install on any airplane, a 

replacement or spare ADG, Hamilton 

Sundstrand part number in the 761339 or 

1711405 series, having one of the serial 

numbers identified in paragraph 1.A. of the 

applicable service bulletin identified in Table 

1 of this AD, unless the ADG is identified 

with the symbol ‘‘24–5’’ on the identification 

plate. 

Actions Accomplished According to 

Previous Issue of Service Bulletin 

(k) Inspections accomplished before the 

effective date of this AD according to 

Bombardier Service Bulletin 601R–24–127, 

dated October 23, 2009, are considered 

acceptable for compliance with the 

corresponding action specified in this AD. 

FAA AD Differences 

Note 1: This AD differs from the MCAI 

and/or service information as follows: The 

MCAI specifies to inspect only airplanes 

having certain serial numbers that are part of 

the MCAI applicability. Because the affected 

part could be rotated onto any of the 

airplanes listed in the applicability, this AD 

requires the inspection be done on all 

airplanes. We have coordinated this with the 

TCCA. 

Other FAA AD Provisions 

(l) 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 

on any airplane to which the AMOC applies, 

notify your principal maintenance inspector 

(PMI) or principal avionics inspector (PAI), 

as appropriate, or lacking a principal 

inspector, your local Flight Standards 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: For any 

reporting requirement in this AD, under the 

provisions of the Paperwork Reduction Act 

(44 U.S.C. 3501 et seq.), the Office of 

Management and Budget (OMB) has 

approved the information collection 

requirements and has assigned OMB Control 

Number 2120–0056. 

Related Information 

(m) Refer to MCAI Canadian Airworthiness 

Directive CF–2009–48, dated December 14, 

2009; and Bombardier Service Bulletins 

601R–24–127, Revision A, dated February 25, 

2010, and 670BA–24–026, dated October 23, 

2009; for related information. 

Material Incorporated by Reference 

(n) You must use Bombardier Service 

Bulletin 601R–24–127, Revision A, dated 

February 25, 2010; or Bombardier Service 

Bulletin 670BA–24–026, dated October 23, 

2009; as applicable; 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 

September 15, 2010. 

Robert D. Breneman, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2010–23838 Filed 9–24–10; 8:45 am] 

BILLING CODE 4910–13–P 

mstockstill on DSKH9S0YB1PROD with RULES