Airworthiness Directives; The Cessna Aircraft Company Model 750 Airplanes, 68731-68733 [2010-28274]

Download as PDF Federal Register / Vol. 75, No. 216 / Tuesday, November 9, 2010 / Proposed Rules (k) If any cracking is found during any inspection required by paragraph (h) or (i) of this AD, before further flight, replace the accumulator with a serviceable accumulator, in accordance with Part B of the Accomplishment Instructions of the applicable service bulletin listed in Table 1 of this AD. Doing the replacement does not end the inspection requirements of this AD. 68731 Repeat the inspections required by paragraph (h) or (i) of this AD at intervals not to exceed 750 flight cycles. Credit for Actions Accomplished in Accordance With Previous Service Information Parts Installation (l) As of the effective date of this AD, no person may install an accumulator (P/N) 08– 8423–010 (MS28700–3) on any airplane unless the accumulator has been inspected in accordance with the requirements of this AD. (m) Inspections accomplished before the effective date of this AD in accordance with the applicable service bulletin listed in Table 2 of this AD are considered acceptable for compliance with the corresponding action specified in this AD. TABLE 2—CREDIT SERVICE BULLETINS Use Bombardier Service Bulletin— For model— CL–215–1A10 (CL–215) ..................................................................................................................... CL–215–6B11 (CL–215T) ................................................................................................................... CL–600–6B11 (CL–415) ..................................................................................................................... Issued in Renton, Washington, on November 2, 2010. Dionne Palermo, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. FAA AD Differences Note 1: This AD differs from the MCAI and/or service information as follows: No differences. wwoods2 on DSK1DXX6B1PROD with PROPOSALS_PART 1 Other FAA AD Provisions [FR Doc. 2010–28275 Filed 11–8–10; 8:45 am] (n) 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. BILLING CODE 4910–13–P Related Information (o) Refer to MCAI Transport Canada Civil Aviation Airworthiness Directive CF–2009– 42R1, dated May 14, 2010; and the service bulletins listed in Table 1 of this AD; for related information. VerDate Mar<15>2010 14:46 Nov 08, 2010 Jkt 223001 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2010–1107; Directorate Identifier 2009–NM–263–AD] RIN 2120–AA64 Airworthiness Directives; The Cessna Aircraft Company Model 750 Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: We propose to adopt a new airworthiness directive (AD) for certain Model 750 airplanes. This proposed AD would 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. This proposed AD would also require revising the airplane flight manual. This proposed AD results from a report of a DC generator overvoltage event which caused smoke in the cockpit and damage to numerous avionics and electrical components. We are proposing 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 SUMMARY: PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 215–541 215–3155 215–4414 Dated— July 9, 2009. July 9, 2009. July 9, 2009. could result in damage to critical electrical and avionics components. DATES: We must receive comments on this proposed AD by December 27, 2010. ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to https://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 W12–140, 1200 New Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this proposed 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 https:// 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 proposed AD, the regulatory evaluation, any comments received, and other information. The E:\FR\FM\09NOP1.SGM 09NOP1 68732 Federal Register / Vol. 75, No. 216 / Tuesday, November 9, 2010 / Proposed Rules street address for the Docket 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: 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. SUPPLEMENTARY INFORMATION: wwoods2 on DSK1DXX6B1PROD with PROPOSALS_PART 1 Comments Invited We invite you to send any written relevant data, views, or arguments about this proposed AD. Send your comments to an address listed under the ADDRESSES section. Include ‘‘Docket No. FAA–2010–1107; Directorate Identifier 2009–NM–263–AD’’ at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing date and may amend this proposed AD because of those comments. We will post all comments we receive, without change, to https:// www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact we receive about this proposed AD. Discussion We have received a report of a DC generator overvoltage event which caused smoke in the cockpit and damage to numerous avionics and electrical components. This event occurred on the ground before an engine was started. This event was determined to be the result of a short in the APU generator windings and subsequent damage to the overvoltage protection circuit in the GCU due to prolonged holding of the generator reset switch in the cockpit. This condition, if not corrected, could result in an overvoltage condition on the DC electrical busses caused by exciter stator winding failures, and subsequent failure of the GCU overvoltage protection circuitry associated with the engine and APU DC generators. Relevant Service Information We have reviewed Cessna Service Letter SL750–24–08, dated August 13, 2009, which describes procedures for an inspection to determine the serial number of the APU generator and the left and right engine 400 amp DC VerDate Mar<15>2010 14:46 Nov 08, 2010 Jkt 223001 generators. For any airplane having any generator with a serial number from 060 through 297 without suffix ‘‘C,’’ the service letter specifies to replace the affected generator(s) before further flight. We also reviewed Cessna Airplane Flight Manual Temporary Changes 75EUMA TC–R01–35, dated May 8, 2009; 75EUA TC–R01–35, dated May 8, 2009; and 75FMA TC–R01–46, dated April 23, 2009; which provide instructions not to hold the main or APU generator reset switches in the reset position for more than one second and to make no more than two attempts to reset a generator. FAA’s Determination and Requirements of This Proposed AD We are proposing this AD because we evaluated all relevant information and determined the unsafe condition described previously is likely to exist or develop in other products of the same type design. This proposed AD would require accomplishing the actions specified in the service information described previously. Interim Action We consider this proposed 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. Costs of Compliance We estimate that this proposed AD would affect 67 airplanes of U.S. registry. We also estimate that it would take up to 10 work-hours per product to comply with this proposed AD. The average labor rate is $85 per work-hour. Based on these figures, we estimate the cost of this proposed 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 PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 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 proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would 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 proposed regulation: 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. You can find our regulatory evaluation and the estimated costs of compliance in the AD Docket. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 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: The Cessna Aircraft Company: Docket No. FAA–2010–1107; Directorate Identifier 2009–NM–263–AD. Comments Due Date (a) We must receive comments by December 27, 2010. 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. E:\FR\FM\09NOP1.SGM 09NOP1 Federal Register / Vol. 75, No. 216 / Tuesday, November 9, 2010 / Proposed Rules 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. wwoods2 on DSK1DXX6B1PROD with PROPOSALS_PART 1 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 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 (750–0173 and on and airplanes incorporating SB750– 71–10 AFM 75FMA, Revision 1, dated June 13, 2002): Insert Cessna Temporary Change (TC) 75FMA TC–R01–46, dated April 23, 2009. (2) For Model 750 Citation X (750–0173 and on and airplanes incorporating SB750– 71–10) AFM 75EUA, Revision 1, dated June 19, 2002: Insert Cessna TC 75EUA TC–R01– 35, dated May 8, 2009. (3) For Model 750 Citation X (750–0173 and on and airplanes incorporating SB750– 71–10) AFM 75EUMA, Revision 1, dated June 30, 2002: Insert Cessna TC 75EUMA TC–R01–35, dated May 8, 2009. VerDate Mar<15>2010 14:46 Nov 08, 2010 Jkt 223001 Note 1: The AFM revisions required by paragraph (g) of this AD may be done by inserting copies of 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 AFM, the general revisions may be inserted into the AFM, provided the relevant information in the general revision is identical to that in TCs. Parts Installation (i) As of the effective date of this AD, no person may install any Pacific Scientific generators 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) To request a different method of compliance or a different compliance time for this AD, follow the procedures in 14 CFR 39.19. 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. Issued in Renton, Washington, on November 2, 2010. Dionne Palermo, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2010–28274 Filed 11–8–10; 8:45 am] BILLING CODE 4910–13–P ENVIRONMENTAL PROTECTION AGENCY 40 CFR Part 81 [EPA–R02–OAR–2010–0688; FRL–9223–7] Approval and Promulgation of OneYear Extension for Attaining the 1997 8-Hour Ozone Standard for the New Jersey Portion of the PhiladelphiaWilmington-Atlantic City Moderate Nonattainment Area Environmental Protection Agency (EPA). ACTION: Proposed rule. AGENCY: Under the Clean Air Act, EPA is proposing to approve an extension SUMMARY: PO 00000 Frm 00006 Fmt 4702 Sfmt 4702 68733 from June 15, 2010 to June 15, 2011 of the applicable attainment date for the New Jersey portion of the PhiladelphiaWilmington-Atlantic City 1997 8-hour ozone nonattainment area (Philadelphia Area), which is classified as moderate nonattainment for the 1997 8-hour ozone national ambient air quality standard (NAAQS). This proposed extension is based in part on complete, quality-assured air quality data recorded during the 2009 ozone season. In accordance with requirements for a 1year extension, the Philadelphia Area’s 4th highest daily 8-hour monitored ozone value during the 2009 ozone season at each monitor in the area is less than 0.084 parts per million (ppm). If EPA finalizes this proposed approval of the attainment date extension, EPA will revise the table with regard to the 8hour ozone attainment dates for the New Jersey portion of the Philadelphia Area. DATES: Comments must be received on or before December 9, 2010. ADDRESSES: Submit your comments, identified by Docket ID number EPA– R02–OAR–2010–0688, by one of the following methods: • https://www.regulations.gov: Follow the on-line instructions for submitting comments. • E-mail: Werner.Raymond@epa.gov. • Fax: 212–637–3901. • Mail: Raymond Werner, Chief, Air Programs Branch, Environmental Protection Agency, Region 2 Office, 290 Broadway, 25th Floor, New York, New York 10007–1866. • Hand Delivery: Raymond Werner, Chief, Air Programs Branch, Environmental Protection Agency, Region 2 Office, 290 Broadway, 25th Floor, New York, New York 10007– 1866. Such deliveries are only accepted during the Regional Office’s normal hours of operation. The Regional Office’s official hours of business are Monday through Friday, 8:30 a.m. to 4:30 p.m. excluding Federal holidays. Instructions: Direct your comments to Docket ID No. EPA–R02–OAR–2010– 0688. EPA’s policy is that all comments received will be included in the public docket without change and may be made available online at https:// www.regulations.gov, including any personal information provided, unless the comment includes information claimed to be Confidential Business Information (CBI) or other information whose disclosure is restricted by statute. Do not submit information that you consider to be CBI or otherwise protected through https:// www.regulations.gov or e-mail. The https://www.regulations.gov Web site is E:\FR\FM\09NOP1.SGM 09NOP1

Agencies

[Federal Register Volume 75, Number 216 (Tuesday, November 9, 2010)]
[Proposed Rules]
[Pages 68731-68733]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2010-28274]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2010-1107; Directorate Identifier 2009-NM-263-AD]
RIN 2120-AA64


Airworthiness Directives; The Cessna Aircraft Company Model 750 
Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain Model 750 airplanes. This proposed AD would 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. This proposed 
AD would also require revising the airplane flight manual. This 
proposed AD results from a report of a DC generator overvoltage event 
which caused smoke in the cockpit and damage to numerous avionics and 
electrical components. We are proposing 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: We must receive comments on this proposed AD by December 27, 
2010.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Portal: Go to https://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 W12-140, 1200 New 
Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays.
    For service information identified in this proposed 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 https://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 proposed AD, the regulatory 
evaluation, any comments received, and other information. The

[[Page 68732]]

street address for the Docket 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: 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.

SUPPLEMENTARY INFORMATION:

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2010-1107; 
Directorate Identifier 2009-NM-263-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this proposed AD. We 
will consider all comments received by the closing date and may amend 
this proposed AD because of those comments.
    We will post all comments we receive, without change, to https://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this proposed AD.

Discussion

    We have received a report of a DC generator overvoltage event which 
caused smoke in the cockpit and damage to numerous avionics and 
electrical components. This event occurred on the ground before an 
engine was started. This event was determined to be the result of a 
short in the APU generator windings and subsequent damage to the 
overvoltage protection circuit in the GCU due to prolonged holding of 
the generator reset switch in the cockpit. This condition, if not 
corrected, could result in an overvoltage condition on the DC 
electrical busses caused by exciter stator winding failures, and 
subsequent failure of the GCU overvoltage protection circuitry 
associated with the engine and APU DC generators.

Relevant Service Information

    We have reviewed Cessna Service Letter SL750-24-08, dated August 
13, 2009, which describes procedures for an inspection to determine the 
serial number of the APU generator and the left and right engine 400 
amp DC generators. For any airplane having any generator with a serial 
number from 060 through 297 without suffix ``C,'' the service letter 
specifies to replace the affected generator(s) before further flight. 
We also reviewed Cessna Airplane Flight Manual Temporary Changes 75EUMA 
TC-R01-35, dated May 8, 2009; 75EUA TC-R01-35, dated May 8, 2009; and 
75FMA TC-R01-46, dated April 23, 2009; which provide instructions not 
to hold the main or APU generator reset switches in the reset position 
for more than one second and to make no more than two attempts to reset 
a generator.

FAA's Determination and Requirements of This Proposed AD

    We are proposing this AD because we evaluated all relevant 
information and determined the unsafe condition described previously is 
likely to exist or develop in other products of the same type design. 
This proposed AD would require accomplishing the actions specified in 
the service information described previously.

Interim Action

    We consider this proposed 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.

Costs of Compliance

    We estimate that this proposed AD would affect 67 airplanes of U.S. 
registry. We also estimate that it would take up to 10 work-hours per 
product to comply with this proposed AD. The average labor rate is $85 
per work-hour. Based on these figures, we estimate the cost of this 
proposed 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

    We determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD would 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 proposed 
regulation:
    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.
    You can find our regulatory evaluation and the estimated costs of 
compliance in the AD Docket.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 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.


Sec.  39.13  [Amended]

    2. The FAA amends Sec.  39.13 by adding the following new AD:

The Cessna Aircraft Company: Docket No. FAA-2010-1107; Directorate 
Identifier 2009-NM-263-AD.

Comments Due Date

    (a) We must receive comments by December 27, 2010.

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.

[[Page 68733]]

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 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 (750-0173 and on and airplanes 
incorporating SB750-71-10 AFM 75FMA, Revision 1, dated June 13, 
2002): Insert Cessna Temporary Change (TC) 75FMA TC-R01-46, dated 
April 23, 2009.
    (2) For Model 750 Citation X (750-0173 and on and airplanes 
incorporating SB750-71-10) AFM 75EUA, Revision 1, dated June 19, 
2002: Insert Cessna TC 75EUA TC-R01-35, dated May 8, 2009.
    (3) For Model 750 Citation X (750-0173 and on and airplanes 
incorporating SB750-71-10) AFM 75EUMA, Revision 1, dated June 30, 
2002: Insert Cessna TC 75EUMA TC-R01-35, dated May 8, 2009.

    Note 1: The AFM revisions required by paragraph (g) of this AD 
may be done by inserting copies of 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 AFM, the general revisions may 
be inserted into the AFM, provided the relevant information in the 
general revision is identical to that in TCs.

Parts Installation

    (i) As of the effective date of this AD, no person may install 
any Pacific Scientific generators 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) To request a different method of compliance or a different 
compliance time for this AD, follow the procedures in 14 CFR 39.19. 
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.


    Issued in Renton, Washington, on November 2, 2010.
Dionne Palermo,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2010-28274 Filed 11-8-10; 8:45 am]
BILLING CODE 4910-13-P
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