Federal Register / Vol. 76, No. 31 / Tuesday, February 15, 2011 / Rules and Regulations 8605 

subspecies of sweet oranges, did not 

evaluate disease transmission from 

seeds taken from asymptomatic fruit, 

and was aborted before conclusive 

findings could be drawn. The 

commenter therefore asserted that seed 

should not be regulated as a host of CVC 

until further research is conducted. 

The commenter is right in pointing 

out that Li et al. was aborted abruptly, 

because of a hurricane, and that only a 

study on three subspecies of sweet 

oranges was concluded by that time. 

However, CVC seed infection rates were 

greater than 22 percent for one 

subspecies evaluated in that study, and 

the transmission from seeds to seedlings 

was determined to be ‘‘efficient.’’ 

Moreover, research had begun on 

several other species, and was tending 

towards the results of the sweet orange 

study. Finally, we note that no studies 

have been conducted since 2003 that 

call into question the findings of Li 

et al. For these reasons, we have 

determined that Li et al.’s conclusion, 

that the study ‘‘demonstrated that [CVC] 

can be transmitted through seed to 

seedlings,’’ is correct, and constitutes a 

sufficient basis for the prohibitions in 

the interim rule. 

Therefore, for the reasons given in the 

interim rule and in this document, we 

are adopting the interim rule as a final 

rule, without change. 

This action also affirms the 

information contained in the interim 

rule concerning Executive Order 12988 

and the Paperwork Reduction Act. 

Further, this action has been 

determined to be not significant for the 

purposes of Executive Order 12866 and, 

therefore, has not been reviewed by the 

Office of Management and Budget. 

Regulatory Flexibility Act 

This rule affirms an interim rule that 

amended the regulations governing the 

importation of nursery stock to prohibit 

the importation of propagative seed of 

several Rutaceae (citrus family) genera 

from certain countries where citrus 

greening or citrus variegated chlorosis 

(CVC) is present. The interim rule also 

required propagative seed of these 

genera from all other countries to be 

accompanied by a phytosanitary 

certificate with an additional 

declaration that neither citrus greening 

nor CVC are known to occur in the 

country where the seed was produced. 

The action was necessary in order to 

prevent the introduction or 

dissemination of citrus greening or CVC 

within the United States. 

We have prepared a final regulatory 

flexibility analysis addressing the 

economic effects of the interim rule on 

small entities, as required by the 

Regulatory Flexibility Act. The analysis 

identifies importers of citrus seed as 

entities potentially affected by the 

interim rule. The full analysis may be 

viewed on the Regulations.gov Web site 

(see ADDRESSES above for instructions 

for accessing Regulations.gov) or 

obtained from the person listed under 

FOR FURTHER INFORMATION CONTACT. 

List of Subjects in 7 CFR Part 319 

Coffee, Cotton, Fruits, Imports, Logs, 

Nursery stock, Plant diseases and pests, 

Quarantine, Reporting and 

recordkeeping requirements, Rice, 

Vegetables. 

PART 319—FOREIGN QUARANTINE 

NOTICES 

Accordingly, we are adopting as a 

final rule, without change, the interim 

rule that amended 7 CFR part 319 and 

that was published at 75 FR 17289– 

17295 on April 6, 2010. 

Done in Washington, DC, this 9th day of 

February 2011. 

Kevin Shea, 

Acting Administrator, Animal and Plant 

Health Inspection Service. 

[FR Doc. 2011–3367 Filed 2–14–11; 8:45 am] 

BILLING CODE 3410–34–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–1113; Directorate 

Identifier 2010–NM–121–AD; Amendment 

39–16603; AD 2011–04–03] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Model CL–600–2B19 (Regional Jet 

Series 100 and 440) 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: 

During flight-testing of a wing anti-ice 

piccolo tube containing a deliberate small 

breach, it was determined that the wing 

leading edge thermal switches Part Number 

(P/N) 601R59320–1 were not detecting the 

consequent bleed leak at the design 

threshold. As a result, Airworthiness 

Limitation (AWL) tasks, consisting of a 

functional check of the wing leading edge 

thermal switches (P/N 601R59320–1) and an 

inspection of the wing anti-ice duct piccolo 

tubes on aeroplanes with these switches 

installed, have been introduced. These tasks 

will limit exposure to dormant failure of the 

wing leading edge thermal switches in the 

event of piccolo tube failure, which could 

potentially compromise the structural 

integrity of the wing leading edge and the 

effectiveness of the wing anti-ice system. 

* * * * * 

The unsafe condition is loss of control 

of the airplane. We are issuing this AD 

to require actions to correct the unsafe 

condition on these products. 

DATES: This AD becomes effective 

March 22, 2011. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of March 22, 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 (ACO), 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 15, 2010 (75 FR 

69609). That NPRM proposed to correct 

an unsafe condition for the specified 

products. The MCAI states: 

During flight-testing of a wing anti-ice 

piccolo tube containing a deliberate small 

breach, it was determined that the wing 

leading edge thermal switches Part Number 

(P/N) 601R59320–1 were not detecting the 

consequent bleed leak at the design 

threshold. As a result, Airworthiness 

Limitation (AWL) tasks, consisting of a 

functional check of the wing leading edge 

thermal switches (P/N 601R59320–1) and an 

inspection of the wing anti-ice duct piccolo 

tubes on aeroplanes with these switches 

installed, have been introduced. These tasks 

will limit exposure to dormant failure of the 

wing leading edge thermal switches in the 

event of piccolo tube failure, which could 

potentially compromise the structural 

integrity of the wing leading edge and the 

effectiveness of the wing anti-ice system. 


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8606 Federal Register / Vol. 76, No. 31 / Tuesday, February 15, 2011 / Rules and Regulations 

This directive mandates revision of the 

approved maintenance schedule to include 

the above referenced tasks, including phasein schedules that supersede the phase-in 

schedules specified in the AWL tasks. 

Note: Thermal switches, P/N 601R59320– 

1, were installed in production on aircraft 

Serial Numbers (S/N) 7213 and subsequent. 

Service Bulletin 601R–30–022 covered inservice installation of these switches on 

aircraft S/Ns 7003 through 7212. 

The unsafe condition is loss of control 

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 

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 

628 products of U.S. registry. We also 

estimate that it will take about 1 workhour 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 $53,380, or $85 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: 

2011–04–03 Bombardier, Inc.: Amendment 

39–16603. Docket No. FAA–2010–1113; 

Directorate Identifier 2010–NM–121–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective March 22, 2011. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Bombardier, Inc. 

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

and 440) airplanes; certificated in any 

category; serial numbers 7003 and 

subsequent. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 57: Wings. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

During flight-testing of a wing anti-ice 

piccolo tube containing a deliberate small 

breach, it was determined that the wing 

leading edge thermal switches Part Number 

(P/N) 601R59320–1 were not detecting the 

consequent bleed leak at the design 

threshold. As a result, Airworthiness 

Limitation (AWL) tasks, consisting of a 

functional check of the wing leading edge 

thermal switches (P/N 601R59320–1) and an 

inspection of the wing anti-ice duct piccolo 

tubes on aeroplanes with these switches 

installed, have been introduced. These tasks 

will limit exposure to dormant failure of the 

wing leading edge thermal switches in the 

event of piccolo tube failure, which could 

potentially compromise the structural 

integrity of the wing leading edge and the 

effectiveness of the wing anti-ice system. 

* * * * * 

The unsafe condition is loss of control 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) Within 30 days after the effective date 

of this AD, revise the Airworthiness 

Limitations section (ALS) of the maintenance 

program by incorporating Task C36–20–133– 

03 specified in Bombardier Temporary 

Revision (TR) 2A–50, dated November 17, 

2009; and Task C30–10–133–01 specified in 

Bombardier TR 2A–49, dated November 17, 

2009; into Appendix A, ‘‘Certification 

Maintenance Requirements,’’ of Part 2 of the 


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Federal Register / Vol. 76, No. 31 / Tuesday, February 15, 2011 / Rules and Regulations 8607 

Bombardier CL–600–2B19 Maintenance 

Requirements Manual (MRM). For these 

tasks, the initial compliance time starts at the 

applicable time specified in paragraphs (g)(1) 

and (g)(2) of this AD. Thereafter, except as 

provided by paragraph (h) of this AD, no 

alternative functional check of the thermal 

switch or detailed visual inspection of the 

piccolo tube may be approved. 

Note 1: The actions required by paragraph 

(g) of this AD may be done by inserting a 

copy of Bombardier TR 2A–49 and TR 2A– 

50, both dated November 17, 2009, into the 

Appendix A of Part 2 of the Bombardier CL– 

600–2B19 MRM. When these TRs have been 

included in Appendix A of Part 2 of the 

general revisions of the MRM, the general 

revisions may be inserted in the MRM, 

provided that the relevant information in the 

general revision is identical to that in 

Bombardier TR 2A–49 and TR 2A–50, both 

dated November 17, 2009. 

(1) For Task C36–20–133–03, the initial 

compliance time is before the accumulation 

of 15,000 total flight hours or within 7 

months after the effective date of this AD, 

whichever occurs later. 

(2) For Task C30–10–133–01, the initial 

compliance time is before the accumulation 

of 15,000 total flight hours on the piccolo 

tube or within 7 months after the effective 

date of this AD, whichever occurs later. 

FAA AD Differences 

Note 2: 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, 

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 

(i) Refer to MCAI Canadian Airworthiness 

Directive CF–2010–12, dated May 26, 2010; 

and Bombardier TR 2A–49, dated November 

17, 2009, and Bombardier TR 2A–50, dated 

November 17, 2009, to Appendix A, 

‘‘Certification Maintenance Requirements,’’ of 

Part 2 of the Bombardier CL–600–2B19 MRM; 

for related information. 

Material Incorporated by Reference 

(j) You must use Bombardier Temporary 

Revision 2A–49, dated November 17, 2009; 

and Bombardier Temporary Revision 2A–50, 

dated November 17, 2009; to Appendix A, 

‘‘Certification Maintenance Requirements,’’ of 

Part 2 of the Bombardier CL–600–2B19 

Maintenance Requirements Manual; 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 February 

3, 2011. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–3041 Filed 2–14–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–1107; Directorate 

Identifier 2009–NM–263–AD; Amendment 

39–16600; AD 2011–03–16] 

RIN 2120–AA64 

Airworthiness Directives; The Cessna 

Aircraft Company Model 750 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for the 

products listed above. This AD requires 

an inspection to determine the serial 

numbers of the auxiliary power unit 

(APU) generator and the left and right 

engine direct current (DC) generators, 

and corrective actions if necessary. This 

AD also requires revising the airplane 

flight manual. This AD was prompted 

by a report of a DC generator overvoltage 

event which caused smoke in the 

cockpit and damage to numerous 

avionics and electrical components. We 

are issuing this AD to detect and correct 

an overvoltage condition on the DC 

electrical busses caused by exciter stator 

winding failures, and subsequent failure 

of the generator control unit (GCU) 

overvoltage protection circuitry, which 

could result in damage to critical 

electrical and avionics components. 

DATES: This AD is effective March 22, 

2011. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of March 22, 2011. 

ADDRESSES: For service information 

identified in this AD, contact Cessna 

Aircraft Co., P.O. Box 7706, Wichita, 

Kansas 67277; telephone 316–517–6215; 

fax 316–517–5802; e-mail 

citationpubs@cessna.textron.com; 

Internet https:// 

www.cessnasupport.com/newlogin.html. 

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 Management Facility between 

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

Friday, except Federal holidays. The AD 


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