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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8608 Federal Register / Vol. 76, No. 31 / Tuesday, February 15, 2011 / Rules and Regulations 

docket contains this AD, the regulatory 

evaluation, any comments received, and 

other information. The address for the 

Docket Office (phone: 800–647–5527) is 

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: 

Raymond Johnston, Aerospace Engineer, 

Electrical Systems and Avionics, ACE– 

119W, FAA, Wichita Aircraft 

Certification Office (ACO), 1801 Airport 

Road, Room 100, Mid-Continent 

Airport, Wichita, Kansas 67209; phone: 

316–946–4197; fax: 316–946–4107; 

e-mail: Raymond.Johnston@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an airworthiness 

directive (AD) that would apply to the 

specified products. That NPRM 

published in the Federal Register on 

November 9, 2010 (75 FR 68731). That 

NPRM proposed to require 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 related corrective actions if 

necessary. That NPRM also proposed to 

require revising the airplane flight 

manual. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. The 

following presents the comments 

received on the proposal and the FAA’s 

response to each comment. 

Request To Verify Applicability 

The European Aviation Safety Agency 

(EASA) requested clarification regarding 

the applicability of the NPRM. The 

EASA noted that the applicability in 

paragraph (c) of the NPRM applies to 

Cessna Model 750 airplanes having 

serial numbers –0222 and –0225 and 

subsequent. The EASA noted that 

paragraph (i) of the NPRM states that no 

person may install any Pacific Scientific 

generators having part number 92841–1 

(9914752–1) that has serial numbers 060 

through 297 without suffix ‘‘C’’ on any 

airplane. The EASA asked if there is a 

chance that the affected generators 

could be installed on other Model 750 

airplanes with serial numbers that are 

not identified in paragraph (c) of the 

NPRM. 

We agree to clarify. Cessna Model 750 

airplanes having lower serial numbers 

use only Goodrich generators, which are 

not affected by the identified unsafe 

condition. We have not changed the 

final rule in regard to this issue. 

Request To Change Paragraph 

Identifier in Note 1 of the NPRM 

Cessna requested that we change the 

paragraph identifier in Note 1 of the 

NPRM to specify paragraph (h), not 

paragraph (g) of the NPRM, because 

paragraph (h) of the NPRM contained 

the AFM revisions. 

We agree. We revised this AD as 

requested. 

Request To Remove the Compliance 

Time 

Cessna requested that we remove the 

compliance time of ‘‘before further 

flight’’ from the Relevant Service 

Information section and paragraph (g) of 

the NPRM. Cessna did not provide a 

reason for its request. 

We partially agree. We agree that the 

information in the Relevant Service 

Information and the Cessna service 

letter should match; however, the 

Relevant Service Information section is 

not contained in the final rule. We do 

not agree with the request to change the 

compliance time in paragraph (g) of the 

final rule. By the time this AD is issued, 

there will not be an issue with parts 

availability and if an affected generator 

is found to be installed, it should be 

replaced immediately. However, 

operators may request approval of an 

alternative method of compliance 

(AMOC) in accordance with the 

procedures specified in paragraph (j)(1) 

of this AD. We have not changed the 

final rule in regard to this issue. 

Conclusion 

We reviewed the relevant data, 

considered the comments received, and 

determined that air safety and the 

public interest require adopting the AD 

with the change described previously. 

We also determined that this change 

will not increase the economic burden 

on any operator or increase the scope of 

the AD. 

Costs of Compliance 

We estimate that this AD affects 67 

airplanes of U.S. registry. We also 

estimate that it takes up to 10 workhours per product to comply with 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 up to $56,950, 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 

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 that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Is not a ‘‘significant rule’’ under 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979), 

(3) Will not affect intrastate aviation 

in Alaska, and 

(4) 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. 

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 airworthiness 

directive (AD): 


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Federal Register / Vol. 76, No. 31 / Tuesday, February 15, 2011 / Rules and Regulations 8609 

2011–03–16 The Cessna Aircraft Company: 

Amendment 39–16600; Docket No. 

FAA–2010–1107; Directorate Identifier 

2009–NM–263–AD. 

Effective Date 

(a) This AD is effective March 22, 2011. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to The Cessna Aircraft 

Company Model 750 airplanes, certificated in 

any category, having serial numbers –0222, 

and –0225 and subsequent. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 24: Electrical power. 

Unsafe Condition 

(e) This AD results from a report of a direct 

current (DC) generator overvoltage event 

which caused smoke in the cockpit and 

damage to numerous avionics and electrical 

components. The Federal Aviation 

Administration is 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 overvoltage 

protection circuitry, which could result in 

damage to critical electrical and avionics 

components. 

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. 

Inspection 

(g) For airplanes having serial numbers 

–0222, –0225 through –0293 inclusive, 

–0295, –0296, and –0298: Within 6 months 

or 600 flight hours after the effective date of 

this AD, whichever occurs later, inspect to 

determine the serial number of the auxiliary 

power unit (APU) generator and the left and 

right engine 400 amp DC generators, in 

accordance with the Accomplishment 

Instructions of Cessna Service Letter SL750– 

24–08, dated August 13, 2009. For airplanes 

that have one or more generators having a 

serial number 060 through 297 inclusive 

without suffix ‘‘C,’’ before further flight, 

replace the affected generator(s) with a new 

or serviceable generator, in accordance with 

the Accomplishment Instructions of Cessna 

Service Letter SL750–24–08, dated August 

13, 2009. 

Revision of the Airplane Flight Manual 

(AFM) 

(h) For airplanes having serial numbers 

–0222, and –0225 and subsequent: Within 30 

days after the effective date of this AD, revise 

Section II, Operating Limitations, Generator 

Limitations, page 2–12, of the applicable 

airplane flight manual (AFM) to include the 

information in the applicable Cessna 

temporary change (TC) required by paragraph 

(h)(1), (h)(2), or (h)(3) of this AD. These TCs 

introduce procedures for resetting the APU 

generator. Operate the airplane according to 

the limitations and procedures in the TCs. 

(1) For Model 750 Citation X airplanes 

(750–0173 and on and airplanes 

incorporating Cessna Service Bulletin 

SB750–71–10): Insert Cessna TC 75FMA TC– 

R01–46, dated April 23, 2009. 

(2) For Model 750 Citation X airplanes 

(750–0173 and on and airplanes 

incorporating Cessna Service Bulletin 

SB750–71–10): Insert Cessna TC 75EUA TC– 

R01–35, dated May 8, 2009. 

(3) For Model 750 Citation X airplanes 

(750–0173 and on and airplanes 

incorporating Cessna Service Bulletin 

SB750–71–10): Insert Cessna TC 75EUMA 

TC–R01–35, dated May 8, 2009. 

Note 1: The AFM revisions required by 

paragraph (h) of this AD may be done by 

inserting copies of Cessna TCs 75FMA TC– 

R01–46, dated April 23, 2009; 75EUA TC– 

R01–35, dated May 8, 2009; or 75EUMA TC– 

R01–35, dated May 8, 2009; into the 

applicable AFM. When these TCs have been 

included in general revisions of the 

applicable AFM, the general revisions may be 

inserted into the applicable AFM, provided 

the relevant information in the general 

revision is identical to that in the applicable 

TC. 

Parts Installation 

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

person may install any Pacific Scientific 

generator having part number 92841–1 

(9914752–1) that has serial numbers 060 

through 297 without the suffix ‘‘C’’ on any 

airplane. 

Alternative Methods of Compliance 

(AMOCs) 

(j)(1) The Manager, Wichita Aircraft 

Certification Office, 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: Raymond 

Johnston, Aerospace Engineer, Electrical 

Systems and Avionics, ACE–119W, FAA, 

Wichita Aircraft Certification Office (ACO), 

1801 Airport Road, Room 100, Mid-Continent 

Airport, Wichita, Kansas 67209; telephone 

(316) 946–4197; fax (316) 946–4107. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

Related Information 

(k) For more information about this AD, 

contact Raymond Johnston, Aerospace 

Engineer, Electrical Systems and Avionics, 

ACE–119W, FAA, Wichita Aircraft 

Certification Office (ACO), 1801 Airport 

Road, Room 100, Mid-Continent Airport, 

Wichita, Kansas 67209; phone: 316–946– 

4197; fax: 316–946–4107; e-mail: 

Raymond.Johnston@faa.gov. 

Material Incorporated by Reference 

(l) You must use the service information 

specified in table 1 of this AD to do the 

actions required by this AD, unless the AD 

specifies otherwise. 

TABLE 1—ALL MATERIAL INCORPORATED BY REFERENCE

Document Date 

Cessna Temporary Change (TC) 75FMA TC–R01–46 to the Section II, Operating Limitations, Generator Limitations, page 

2–12.

April 23, 2009. 

Cessna TC 75EUA TC–R01–35 to the Section II, Operating Limitations, Generator Limitations, page 2–12 ........................ May 8, 2009. 

Cessna TC 75EUMA TC-R01–35 to the Section II, Operating Limitations, Generator Limitations, page 2–12 ...................... May 8, 2009. 

Cessna Service Letter SL750–24–08 ........................................................................................................................................ August 13, 2009. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

the service information specified in table 1 of 

this AD under 5 U.S.C. 552(a) and 1 CFR part 

51. 

(2) 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. 

(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 an NARA facility, 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 

28, 2011. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–2516 Filed 2–14–11; 8:45 am] 

BILLING CODE 4910–13–P 


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