Federal Register / Vol. 75, No. 45 / Tuesday, March 9, 2010 / Rules and Regulations 10667 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0178; Directorate 

Identifier 2010–NM–039–AD; Amendment 

39–16224; AD 2010–05–14] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Model CL–600–2B19 (Regional Jet 

Series 100 & 440) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule; request for 

comments. 

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: 

The manufacturer has informed Transport 

Canada that a certain number of the resolver 

stators, which were installed in the AOA 

[angle of attack] transducers, were not 

cleaned correctly. This condition can degrade 

the AOA transducer performance at low 

temperatures resulting in freezing of the AOA 

transducer resolver, which may provide 

inaccurate AOA data to the Stall Protection 

System (SPS). If not corrected, this condition 

can result in early or late activation of the 

stick shaker and/or stick pusher. 

The unsafe condition is early or late 

activation of the stick shaker or stick 

pusher, which can lead to loss of control 

of the airplane. This AD requires actions 

that are intended to address the unsafe 

condition described in the MCAI. 

DATES: This AD becomes effective 

March 24, 2010. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of March 24, 2010. 

We must receive comments on this 

AD by April 23, 2010. 

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. 

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 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: 

Wing Chan, Aerospace Engineer, 

Avionics and Flight Test Branch, ANE– 

172, FAA, New York Aircraft 

Certification Office (ACO), 1600 Stewart 

Avenue, Suite 410, Westbury, New York 

11590; telephone (516) 228–7311; fax 

(516) 794–5531. 

SUPPLEMENTARY INFORMATION: 

Discussion 

Transport Canada Civil Aviation, 

which is the aviation authority for 

Canada, has issued Canadian 

Airworthiness Directive CF–2010–04, 

dated January 27, 2010 (referred to after 

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

condition for the specified products. 

The MCAI states: 

The manufacturer has informed Transport 

Canada that a certain number of the resolver 

stators, which were installed in the AOA 

[angle of attack] transducers, were not 

cleaned correctly. This condition can degrade 

the AOA transducer performance at low 

temperatures resulting in freezing of the AOA 

transducer resolver, which may provide 

inaccurate AOA data to the Stall Protection 

System (SPS). If not corrected, this condition 

can result in early or late activation of the 

stick shaker and/or stick pusher. 

The unsafe condition is early or late 

activation of the stick shaker or stick 

pusher, which can lead to loss of control 

of the airplane. The required actions 

include inspecting to determine if 

certain AOA transducers are installed, 

and replacement if necessary. You may 

obtain further information by examining 

the MCAI in the AD docket. 

Relevant Service Information 

Bombardier has issued Alert Service 

Bulletin A601R–27–157, Revision A, 

dated January 18, 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 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 issuing this 

AD because we evaluated all pertinent 

information and determined the unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. 

Differences Between the 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 FAA policies. 

Any such differences are highlighted in 

a NOTE within the AD. 

FAA’s Determination of the Effective 

Date 

An unsafe condition exists that 

requires the immediate adoption of this 

AD. The FAA has found that the risk to 

the flying public justifies waiving notice 

and comment prior to adoption of this 

rule because a certain number of the 

resolver stators, which were installed in 

the AOA transducers, were not cleaned 

correctly. This condition can degrade 

the AOA transducer performance at low 

temperatures, resulting in freezing of the 

AOA transducer resolver, which may 

provide inaccurate AOA data to the 

SPS. If not corrected, this condition can 

result in early or late activation of the 

stick shaker and/or stick pusher. 

Therefore, we determined that notice 

and opportunity for public comment 

before issuing this AD are impracticable 

and that good cause exists for making 

this amendment effective in fewer than 

30 days. 

Comments Invited 

This AD is a final rule that involves 

requirements affecting flight safety, and 

we did not precede it by notice and 

opportunity for public comment. We 

invite you to send any written relevant 

data, views, or arguments about this AD. 

Send your comments to an address 


sroberts on DSKD5P82C1PROD with RULES
10668 Federal Register / Vol. 75, No. 45 / Tuesday, March 9, 2010 / Rules and Regulations 

listed under the ADDRESSES section. 

Include ‘‘Docket No. FAA–2010–0178; 

Directorate Identifier 2010–NM–039– 

AD’’ at the beginning of your comments. 

We specifically invite comments on the 

overall regulatory, economic, 

environmental, and energy aspects of 

this AD. We will consider all comments 

received by the closing date and may 

amend this AD because of 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 AD. 

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. 

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: 

2010–05–14 Bombardier, Inc.: Amendment 

39–16224. Docket No. FAA–2010–0178; 

Directorate Identifier 2010–NM–039–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective March 24, 2010. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Bombardier, Inc. 

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

& 440) airplanes, certificated in any category, 

serial numbers (S/Ns) 7003 and subsequent 

equipped with Thales angle of attack (AOA) 

transducers having part number (P/N) 

45150340 or P/N C16258AA. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 27: Flight Controls. 

Reason 

(e) The mandatory continued airworthiness 

information (MCAI) states: 

‘‘The manufacturer has informed Transport 

Canada that a certain number of the resolver 

stators, which were installed in the AOA 

transducers, were not cleaned correctly. This 

condition can degrade the AOA transducer 

performance at low temperatures resulting in 

freezing of the AOA transducer resolver, 

which may provide inaccurate AOA data to 

the Stall Protection System (SPS). If not 

corrected, this condition can result in early 

or late activation of the stick shaker and/or 

stick pusher.’’ 

The unsafe condition is early or late 

activation of the stick shaker or stick pusher, 

which can lead to loss of control of the 

airplane. The required actions include 

inspecting to determine if certain AOA 

transducers are installed, and replacement if 

necessary. 

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) Do the following actions. 

(1) Within 250 flight hours after the 

effective date of this AD, inspect to 

determine if the serial number of each AOA 

transducer having P/N 45150340 or P/N 

C16258AA is listed in paragraph 1.A. of 

Bombardier Alert Service Bulletin A601R– 

27–157, Revision A, dated January 18, 2010. 

A review of airplane maintenance records is 

acceptable in lieu of this inspection if the 

serial number of the AOA transducer can be 

conclusively determined from that review. 

(i) If the serial number is not listed in 

paragraph 1.A. of Bombardier Alert Service 

Bulletin A601R–27–157, Revision A, dated 

January 18, 2010, no further action is 

required other than compliance with 

paragraph (g)(2) of this AD. 

(ii) If the serial number is listed in 

paragraph 1.A. of Bombardier Alert Service 

Bulletin A601R–27–157, Revision A, dated 

January 18, 2010, and the serial number has 

the letter ‘‘C’’, no further action is required 

other than compliance with paragraph (g)(2) 

of this AD. 

(iii) If the serial number is listed in 

paragraph 1.A. of Bombardier Alert Service 

Bulletin A601R–27–157, Revision A, dated 

January 18, 2010, and the serial number does 

not have the letter ‘‘C’’: Before further flight, 

replace the AOA transducer with an AOA 

transducer that is either outside the affected 

serial numbers identified in paragraph 1.A. of 

Bombardier Alert Service Bulletin A601R– 

27–157, Revision A, dated January 18, 2010, 

or that has the letter ‘‘C’’ after the serial 

number, in accordance with paragraph 2., 

Part C, of the Accomplishment Instructions 

of Bombardier Alert Service Bulletin A601R– 

27–157, Revision A, dated January 18, 2010. 

(2) As of the effective date of this AD, do 

not install any replacement AOA transducer 

having P/N 45150340 or P/N C16258AA, 

having a serial number listed in paragraph 

1.A. of Bombardier Alert Service Bulletin 

A601R–27–157, Revision A, dated January 

18, 2010, on any airplane, unless the 

transducer has been inspected by the 

manufacturer and has the letter ‘‘C’’ after 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 

(h) 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 


sroberts on DSKD5P82C1PROD with RULES
Federal Register / Vol. 75, No. 45 / Tuesday, March 9, 2010 / Rules and Regulations 10669 

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 

(i) Refer to MCAI Canadian Airworthiness 

Directive CF–2010–04, dated January 27, 

2010; and Bombardier Alert Service Bulletin 

A601R–27–157, Revision A, dated January 

18, 2010; for related information. 

Material Incorporated by Reference 

(j) You must use Bombardier Alert Service 

Bulletin A601R–27–157, Revision A, dated 

January 18, 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 or 425–227–1152. 

(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 February 

24, 2010. 

Jeffrey E. Duven, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2010–4712 Filed 3–8–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2008–0376; Directorate 

Identifier 2007–NM–322–AD; Amendment 

39–16221; AD 2010–05–11] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Model 747–100, 747–200B, 

747–300, and 747SR Series Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Model 747–100, 747–200B, 747–300, 

and 747SR series airplanes. This AD 

requires installation of a closeout panel 

and moisture curtains for the main 

equipment center. This AD results from 

a report of water contamination in the 

electrical and electronic units in the 

main equipment center. We are issuing 

this AD to prevent the malfunction of 

one or more electrical and electronic 

units in the main equipment center, 

which could adversely affect the 

airplane’s continued safe flight. 

DATES: This AD is effective April 13, 

2010. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of April 13, 2010. 

ADDRESSES: 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. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Management Facility between 9 

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

Friday, except Federal holidays. The AD 

docket contains this AD, the regulatory 

evaluation, any comments received, and 

other information. The address for the 

Docket Office (telephone 800–647–5527) 

is the Document Management Facility, 

U.S. Department of Transportation, 

Docket Operations, M–30, West 

Building Ground Floor, Room W12–140, 

1200 New Jersey Avenue, SE., 

Washington, DC 20590. 

FOR FURTHER INFORMATION CONTACT: 

Marcia Smith, Aerospace Engineer, 

Cabin Safety and Environmental 

Systems Branch, ANM–150S, FAA, 

Seattle Aircraft Certification Office, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 917–6484; fax (425) 917–6590. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a supplemental notice of 

proposed rulemaking (NPRM) to amend 

14 CFR part 39 to include an 

airworthiness directive (AD) that would 

apply to certain Boeing Model 747–100, 

747–200B, 747–300, and 747SR series 

airplanes. That supplemental NPRM 

was published in the Federal Register 

on September 25, 2009 (74 FR 48882). 

That supplemental NPRM proposed to 

require installation of a closeout panel 

and moisture curtains for the main 

equipment center. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

considered the comment received from 

the sole commenter. 

Request to Reference Revised Service 

Bulletin 

Boeing requests that we revise the 

supplemental NPRM to refer to Revision 

1, dated June 25, 2007, of Boeing Alert 

Service Bulletin 747–25A3346 for the 

shroud installation (paragraph (g) in the 

original NPRM). Boeing states that 

Revision 1 reroutes the forward drain 

tube installation, revises the pitot static 

lines, revises the moisture shroud 

inboard bracket installation, and revises 

the wire routing. 

We disagree with Boeing’s request. As 

noted in the supplemental NPRM, we 

have removed the requirement to 

perform any actions in accordance with 

Boeing Alert Service Bulletin 747– 

25A3346. We have not changed the AD 

in this regard. 

Conclusion 

We reviewed the relevant data, 

considered the comment received, and 

determined that air safety and the 

public interest require adopting the AD 

as proposed. 

Interim Action 

We consider this AD interim action. 

The manufacturer is currently 

developing a modification that will 

address the unsafe condition identified 

in this AD. Once this modification is 

developed, approved, and available, we 

might consider additional rulemaking. 


sroberts on DSKD5P82C1PROD with RULES