Airworthiness Directives; Saab Model SAAB 2000 Airplanes, 12576-12578 [E7-4862]

Download as PDF 12576 Federal Register / Vol. 72, No. 51 / Friday, March 16, 2007 / Proposed Rules 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329–4146; fax: (816) 329–4090, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Before using any approved AMOC on any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. (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 (h) Refer to European Aviation Safety Agency (EASA) AD No: 2007–0028, dated February 5, 2007; and Dornier 228 RUAG Alert Service Bulletin No. ASB–228–266, dated December 1, 2006, for related information. Issued in Kansas City, Missouri, on March 9, 2007. David R. Showers, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. E7–4850 Filed 3–15–07; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2007–27595; Directorate Identifier 2006–NM–248–AD] RIN 2120–AA64 Airworthiness Directives; Saab Model SAAB 2000 Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). erjones on PRODPC74 with PROPOSALS AGENCY: SUMMARY: We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed 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: VerDate Aug<31>2005 15:24 Mar 15, 2007 Jkt 211001 It has been revealed that the control surface balancing procedure in the * * * SAAB 2000 SRM (structural repair manual) * * * is incorrect. * * * * * Incorrect balance, outside the tolerance of the aileron control surface, may lead to vibrations that in [the] worst case can result in flutter. The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI. DATES: We must receive comments on this proposed AD by April 16, 2007. ADDRESSES: You may send comments by any of the following methods: • DOT Docket Web Site: Go to http://dms.dot.gov and follow the instructions for sending your comments electronically. • Fax: (202) 493–2251. • Mail: Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL–401, Washington, DC 20590– 0001. • Hand Delivery: Room PL–401 on the plaza level of the Nassif Building, 400 Seventh Street, SW., Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. • Federal eRulemaking Portal: http:// www.regulations.gov. Follow the instructions for submitting comments. Examining the AD Docket You may examine the AD docket on the Internet at http://dms.dot.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 street address for the Docket Office (telephone (800) 647– 5227) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Mike Borfitz, Aerospace Engineer, International Branch, ANM–116, FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington 98057–3356; telephone (425) 227–2677; fax (425) 227–1149. SUPPLEMENTARY INFORMATION: Streamlined Issuance of AD The FAA is implementing a new process for streamlining the issuance of ADs related to MCAI. This streamlined process will allow us to adopt MCAI safety requirements in a more efficient manner and will reduce safety risks to the public. This process continues to follow all FAA AD issuance processes to meet legal, economic, Administrative PO 00000 Frm 00003 Fmt 4702 Sfmt 4702 Procedure Act, and Federal Register requirements. We also continue to meet our technical decision-making responsibilities to identify and correct unsafe conditions on U.S.-certificated products. This proposed AD references the MCAI and related service information that we considered in forming the engineering basis to correct the unsafe condition. The proposed AD contains text copied from the MCAI and for this reason might not follow our plain language principles. 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–2007–27595; Directorate Identifier 2006–NM–248–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 based on those comments. We will post all comments we receive, without change, to http:// dms.dot.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 The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, has issued EASA Emergency Airworthiness Directive 2006–0053–E, dated February 22, 2006 (referred to after this as ‘‘the MCAI’’), to correct an unsafe condition for the specified products. The MCAI states: It has been revealed that the control surface balancing procedure in the web and CD/DVD versions of the SAAB 2000 SRM (structural repair manual) Chapter 51–60–00, Control Surface Balancing Procedure is incorrect. The incorrect Calculation formula (pages 1, 4 and 7) was incorporated in Revision 21 of the SRM dated April 01/05 and was distributed in 4 July 2005 on the CD/DVD issue Apr. 01/ 05. In the incorrect formula, an ‘‘x’’ (multiplication) has been replaced with a ‘‘+’’ (addition) when the data was converted in the system and if this formula is followed, you may receive a result outside of the allowed tolerance. Incorrect balance, outside the tolerance of the aileron control surface, may lead to vibrations that in [the] worst case can result in flutter. The hard copy of the manual, SAAB 2000 SRM, is correct. E:\FR\FM\16MRP1.SGM 16MRP1 Federal Register / Vol. 72, No. 51 / Friday, March 16, 2007 / Proposed Rules The CD/DVD dated Oct 01/05, marked ‘‘Reissue’’, includes a correct SAAB SRM revision 22. The corrective action includes identifying ailerons that have been balanced after July 4, 2005. If balanced incorrectly, they must be rebalanced. You may obtain further information by examining the MCAI in the AD docket. Relevant Service Information Saab has issued Service Bulletin 2000–57–040, dated February 23, 2006. 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 Proposed 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 this State of Design Authority, we have been notified of the unsafe condition described in the MCAI and service information referenced above. We are proposing this AD because we evaluated all pertinent information and determined an unsafe condition exists and is likely to exist or develop on other products of the same type design. 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 proposed different actions in this AD from those in the MCAI in order to follow FAA policies. Any such differences are described in a separate paragraph of the proposed AD. These requirements, if ultimately adopted, will take precedence over the actions copied from the MCAI. erjones on PRODPC74 with PROPOSALS Costs of Compliance Based on the service information, we estimate that this proposed AD would affect about 3 products of U.S. registry. We also estimate that it would take about 1 work-hour per product to identify ailerons that have been balanced after July 4, 2005. The average labor rate is $80 per work-hour. Based on these figures, we estimate the cost of VerDate Aug<31>2005 15:24 Mar 15, 2007 Jkt 211001 the proposed AD for U.S. operators to be $240, or $80 per product. In addition, we estimate that any necessary follow-on actions would take about 20 work-hours, for a cost of $1,600 per product. We have no way of determining the number of products that may need these actions. 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. We prepared a regulatory evaluation of the estimated costs to comply with this proposed AD and placed it in the AD docket. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Safety. The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 12577 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: Saab Aircraft AB: Docket No. FAA–2007– 27595; Directorate Identifier 2006-NM– 248-AD. Comments Due Date (a) We must receive comments by April 16, 2007. Affected ADs (b) None. Applicability (c) This AD applies to Saab Model SAAB 2000 airplanes, certificated in any category, ranging from serial number -004 through -063, on which aileron, P/N (part number) 7357600–501/502, P/N 7357600–503/504, P/ N 7357600–505/506, P/N 7357600–507/508, P/N 7357991–601/602, P/N 7357991–603/ 604, P/N 7357991–605/606, P/N 7357995– 843/844, or P/N 7357995–927/928, is installed. Subject (d) Wings. Reason (e) The mandatory continuing airworthiness information (MCAI) states: It has been revealed that the control surface balancing procedure in the web and CD/DVD versions of the SAAB 2000 SRM (Structural Repair Manual) Chapter 51–60–00, Control Surface Balancing Procedure is incorrect. The incorrect Calculation formula (page 1, 4 and 7) was incorporated in Revision 21 of the SRM dated April 01/05 and was distributed in 4 July 2005 on the CD/DVD issue Apr. 01/ 05. In the incorrect formula, an ‘‘x’’ (multiplication) has been replaced with a ‘‘+’’ (addition) when the data was converted in the system and if this formula is followed, you may receive a result outside of the allowed tolerance. Incorrect balance, outside the tolerance of the aileron control surface, may lead to vibrations that in [the] worst case can result in flutter. The hard copy of the manual, SAAB 2000 SRM, is correct. The CD/DVD dated Oct 01/05, marked ‘‘Reissue’’, includes a correct SAAB SRM revision 22. The corrective action includes identifying ailerons that have been balanced after July 4, 2005 until the effective date of this AD. If balanced incorrectly, they must be rebalanced. E:\FR\FM\16MRP1.SGM 16MRP1 12578 Federal Register / Vol. 72, No. 51 / Friday, March 16, 2007 / Proposed Rules Actions and Compliance DEPARTMENT OF TRANSPORTATION (f) Within one month after the effective date of this AD, unless already done, do the following actions. (1) Identify ailerons that have been balanced after July 4, 2005. If balanced incorrectly, they must be rebalanced before further flight in accordance with Saab Service Bulletin 2000–57–040, dated February 23, 2006. (2) As of the effective date of this AD, the aileron balancing procedure contained in he CD/DVD ‘‘Issue Date: Apr 01/05’’ including the Saab SAAB 2000 SRM at Revision 21 and the CD/DVD ‘‘Issue Date: Oct 01/05’’ including SRM at Revision 22 may not be used. FAA AD Differences Note: This AD differs from the MCAI and/ or service information as follows: No differences. Other FAA AD Provisions (g) The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, International Branch, ANM–116, FAA, ATTN: Mike Borfitz, Aerospace Engineer, 1601 Lind Avenue, SW., Renton, Washington 98057– 3356, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Before using any AMOC approved in accordance with § 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. (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, the Office of Management and Budget (OMB) has approved the information collection requirements and has assigned OMB Control Number 2120–0056. Related Information erjones on PRODPC74 with PROPOSALS (h) Refer to MCAI European Aviation Safety Agency Emergency Airworthiness Directive 2006–0053-E, dated February 22, 2006, and Saab Service Bulletin 2000–57– 040, dated February 23, 2006. Issued in Renton, Washington, on March 9, 2007. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E7–4862 Filed 3–15–07; 8:45 am] BILLING CODE 4910–13–P VerDate Aug<31>2005 15:24 Mar 15, 2007 Jkt 211001 Comments Invited Federal Aviation Administration Interested parties are invited to participate in this proposed rulemaking by submitting such written data, views, or arguments as they may desire. Comments that provide the factual basis supporting the views and suggestions presented are particularly helpful in developing reasoned regulatory decisions on the proposal. Comments are specifically invited on the overall regulatory, aeronautical, economic, environmental, and energy-related aspects of the proposal. Communications should identify both docket numbers and be submitted in triplicate to the address listed above. Commenters wishing the FAA to acknowledge receipt of their comments on this notice must submit with those comments a self-addressed, stamped postcard on which the following statement is made: ‘‘Comments to Docket No. FAA–2007–27221/Airspace Docket No. 07–AAL–01.’’ The postcard will be date/time stamped and returned to the commenter. All communications received on or before the specified closing date for comments will be considered before taking action on the proposed rule. The proposal contained in this notice may be changed in light of comments received. All comments submitted will be available for examination in the public docket both before and after the closing date for comments. A report summarizing each substantive public contact with FAA personnel concerned with this rulemaking will be filed in the docket. 14 CFR Part 71 [Docket No. FAA–2007–27221; Airspace Docket No. 07–AAL–01] Proposed Revision of Class E Airspace; Kodiak, AK Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking. AGENCY: SUMMARY: This action proposes to revise Class E airspace at Kodiak, AK. Four Standard Instrument Approach Procedures (SIAPs) are being amended for the Kodiak Airport. A Standard Instrument Departure (SID) and a Departure Procedure (DP) are also being amended. Adoption of this proposal would result in revision of existing Class E airspace upward from the surface and from 700 feet (ft.) and 1,200 ft. above the surface at Kodiak Airport, Kodiak, AK. DATES: Comments must be received on or before April 30, 2007. ADDRESSES: Send comments on the proposal to the Docket Management System, U.S. Department of Transportation, Room Plaza 401, 400 Seventh Street, SW., Washington, DC 20590–0001. You must identify the docket number FAA–2007–27221/ Airspace Docket No. 07–AAL–01, at the beginning of your comments. You may also submit comments on the Internet at http://dms.dot.gov. You may review the public docket containing the proposal, any comments received, and any final disposition in person in the Dockets Office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The Docket Office (telephone 1–800–647–5527) is on the plaza level of the Department of Transportation NASSIF Building at the above address. An informal docket may also be examined during normal business hours at the office of the Manager, Safety, Alaska Flight Service Operations, Federal Aviation Administration, 222 West 7th Avenue, Box 14, Anchorage, AK 99513–7587. FOR FURTHER INFORMATION CONTACT: Gary Rolf, Federal Aviation Administration, 222 West 7th Avenue, Box 14, Anchorage, AK 99513–7587; telephone number (907) 271–5898; fax: (907) 271– 2850; e-mail: gary.ctr.rolf@faa.gov. Internet address: http:// www.alaska.faa.gov/at. SUPPLEMENTARY INFORMATION: PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 Availability of Notice of Proposed Rulemaking’s (NPRM’s) An electronic copy of this document may be downloaded through the Internet at http://dms.dot.gov. Recently published rulemaking documents can also be accessed through the FAA’s Web page at http://www.faa.gov or the Superintendent of Document’s Web page at http://www.access.gpo.gov/nara. Additionally, any person may obtain a copy of this notice by submitting a request to the Federal Aviation Administration, Office of Air Traffic Airspace Management, ATA–400, 800 Independence Avenue, SW., Washington, DC 20591 or by calling (202) 267–8783. Communications must identify both docket numbers for this notice. Persons interested in being placed on a mailing list for future NPRM’s should contact the FAA’s Office of Rulemaking, (202) 267–9677, to request a copy of Advisory Circular No. 11–2A, Notice of Proposed E:\FR\FM\16MRP1.SGM 16MRP1

Agencies

[Federal Register Volume 72, Number 51 (Friday, March 16, 2007)]
[Proposed Rules]
[Pages 12576-12578]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E7-4862]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2007-27595; Directorate Identifier 2006-NM-248-AD]
RIN 2120-AA64


Airworthiness Directives; Saab Model SAAB 2000 Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to adopt a new airworthiness directive (AD) for the 
products listed above. This proposed 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:

    It has been revealed that the control surface balancing 
procedure in the * * * SAAB 2000 SRM (structural repair manual) * * 
* is incorrect.
* * * * *
    Incorrect balance, outside the tolerance of the aileron control 
surface, may lead to vibrations that in [the] worst case can result 
in flutter.

    The proposed AD would require actions that are intended to address 
the unsafe condition described in the MCAI.

DATES: We must receive comments on this proposed AD by April 16, 2007.

ADDRESSES: You may send comments by any of the following methods:
     DOT Docket Web Site: Go to http://dms.dot.gov and follow 
the instructions for sending your comments electronically.
     Fax: (202) 493-2251.
     Mail: Docket Management Facility, U.S. Department of 
Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, 
Washington, DC 20590-0001.
     Hand Delivery: Room PL-401 on the plaza level of the 
Nassif Building, 400 Seventh Street, SW., Washington, DC, between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
     Federal eRulemaking Portal: http://www.regulations.gov. 
Follow the instructions for submitting comments.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://
dms.dot.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 street address for the 
Docket Office (telephone (800) 647-5227) is in the ADDRESSES section. 
Comments will be available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Mike Borfitz, Aerospace Engineer, 
International Branch, ANM-116, FAA, Transport Airplane Directorate, 
1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 
227-2677; fax (425) 227-1149.

SUPPLEMENTARY INFORMATION: 

Streamlined Issuance of AD

    The FAA is implementing a new process for streamlining the issuance 
of ADs related to MCAI. This streamlined process will allow us to adopt 
MCAI safety requirements in a more efficient manner and will reduce 
safety risks to the public. This process continues to follow all FAA AD 
issuance processes to meet legal, economic, Administrative Procedure 
Act, and Federal Register requirements. We also continue to meet our 
technical decision-making responsibilities to identify and correct 
unsafe conditions on U.S.-certificated products.
    This proposed AD references the MCAI and related service 
information that we considered in forming the engineering basis to 
correct the unsafe condition. The proposed AD contains text copied from 
the MCAI and for this reason might not follow our plain language 
principles.

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-2007-
27595; Directorate Identifier 2006-NM-248-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 based on those comments.
    We will post all comments we receive, without change, to http://
dms.dot.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

    The European Aviation Safety Agency (EASA), which is the Technical 
Agent for the Member States of the European Community, has issued EASA 
Emergency Airworthiness Directive 2006-0053-E, dated February 22, 2006 
(referred to after this as ``the MCAI''), to correct an unsafe 
condition for the specified products. The MCAI states:

    It has been revealed that the control surface balancing 
procedure in the web and CD/DVD versions of the SAAB 2000 SRM 
(structural repair manual) Chapter 51-60-00, Control Surface 
Balancing Procedure is incorrect. The incorrect Calculation formula 
(pages 1, 4 and 7) was incorporated in Revision 21 of the SRM dated 
April 01/05 and was distributed in 4 July 2005 on the CD/DVD issue 
Apr. 01/05.
    In the incorrect formula, an ``x'' (multiplication) has been 
replaced with a ``+'' (addition) when the data was converted in the 
system and if this formula is followed, you may receive a result 
outside of the allowed tolerance.
    Incorrect balance, outside the tolerance of the aileron control 
surface, may lead to vibrations that in [the] worst case can result 
in flutter.
    The hard copy of the manual, SAAB 2000 SRM, is correct.

[[Page 12577]]

    The CD/DVD dated Oct 01/05, marked ``Reissue'', includes a 
correct SAAB SRM revision 22.

    The corrective action includes identifying ailerons that have been 
balanced after July 4, 2005. If balanced incorrectly, they must be 
rebalanced. You may obtain further information by examining the MCAI in 
the AD docket.

Relevant Service Information

    Saab has issued Service Bulletin 2000-57-040, dated February 23, 
2006. 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 Proposed 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 this State of Design Authority, we have 
been notified of the unsafe condition described in the MCAI and service 
information referenced above. We are proposing this AD because we 
evaluated all pertinent information and determined an unsafe condition 
exists and is likely to exist or develop on other products of the same 
type design.

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 proposed different actions in this AD from those 
in the MCAI in order to follow FAA policies. Any such differences are 
described in a separate paragraph of the proposed AD. These 
requirements, if ultimately adopted, will take precedence over the 
actions copied from the MCAI.

Costs of Compliance

    Based on the service information, we estimate that this proposed AD 
would affect about 3 products of U.S. registry. We also estimate that 
it would take about 1 work-hour per product to identify ailerons that 
have been balanced after July 4, 2005. The average labor rate is $80 
per work-hour. Based on these figures, we estimate the cost of the 
proposed AD for U.S. operators to be $240, or $80 per product.
    In addition, we estimate that any necessary follow-on actions would 
take about 20 work-hours, for a cost of $1,600 per product. We have no 
way of determining the number of products that may need these actions.

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.
    We prepared a regulatory evaluation of the estimated costs to 
comply with this proposed AD and placed it in the AD docket.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, 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:

Saab Aircraft AB: Docket No. FAA-2007-27595; Directorate Identifier 
2006-NM-248-AD.

Comments Due Date

    (a) We must receive comments by April 16, 2007.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Saab Model SAAB 2000 airplanes, 
certificated in any category, ranging from serial number -004 
through -063, on which aileron, P/N (part number) 7357600-501/502, 
P/N 7357600-503/504, P/N 7357600-505/506, P/N 7357600-507/508, P/N 
7357991-601/602, P/N 7357991-603/604, P/N 7357991-605/606, P/N 
7357995-843/844, or P/N 7357995-927/928, is installed.

Subject

    (d) Wings.

Reason

    (e) The mandatory continuing airworthiness information (MCAI) 
states:
    It has been revealed that the control surface balancing 
procedure in the web and CD/DVD versions of the SAAB 2000 SRM 
(Structural Repair Manual) Chapter 51-60-00, Control Surface 
Balancing Procedure is incorrect. The incorrect Calculation formula 
(page 1, 4 and 7) was incorporated in Revision 21 of the SRM dated 
April 01/05 and was distributed in 4 July 2005 on the CD/DVD issue 
Apr. 01/05.
    In the incorrect formula, an ``x'' (multiplication) has been 
replaced with a ``+'' (addition) when the data was converted in the 
system and if this formula is followed, you may receive a result 
outside of the allowed tolerance.
    Incorrect balance, outside the tolerance of the aileron control 
surface, may lead to vibrations that in [the] worst case can result 
in flutter.
    The hard copy of the manual, SAAB 2000 SRM, is correct.
    The CD/DVD dated Oct 01/05, marked ``Reissue'', includes a 
correct SAAB SRM revision 22.
    The corrective action includes identifying ailerons that have 
been balanced after July 4, 2005 until the effective date of this 
AD. If balanced incorrectly, they must be rebalanced.

[[Page 12578]]

Actions and Compliance

    (f) Within one month after the effective date of this AD, unless 
already done, do the following actions.
    (1) Identify ailerons that have been balanced after July 4, 
2005. If balanced incorrectly, they must be rebalanced before 
further flight in accordance with Saab Service Bulletin 2000-57-040, 
dated February 23, 2006.
    (2) As of the effective date of this AD, the aileron balancing 
procedure contained in he CD/DVD ``Issue Date: Apr 01/05'' including 
the Saab SAAB 2000 SRM at Revision 21 and the CD/DVD ``Issue Date: 
Oct 01/05'' including SRM at Revision 22 may not be used.

FAA AD Differences

    Note:  This AD differs from the MCAI and/or service information 
as follows: No differences.

Other FAA AD Provisions

    (g) The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, 
International Branch, ANM-116, FAA, ATTN: Mike Borfitz, Aerospace 
Engineer, 1601 Lind Avenue, SW., Renton, Washington 98057-3356, has 
the authority to approve AMOCs for this AD, if requested using the 
procedures found in 14 CFR 39.19. Before using any AMOC approved in 
accordance with Sec.  39.19 on any airplane to which the AMOC 
applies, notify the appropriate principal inspector in the FAA 
Flight Standards Certificate Holding District Office.
    (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, the 
Office of Management and Budget (OMB) has approved the information 
collection requirements and has assigned OMB Control Number 2120-
0056.

Related Information

    (h) Refer to MCAI European Aviation Safety Agency Emergency 
Airworthiness Directive 2006-0053-E, dated February 22, 2006, and 
Saab Service Bulletin 2000-57-040, dated February 23, 2006.

    Issued in Renton, Washington, on March 9, 2007.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
 [FR Doc. E7-4862 Filed 3-15-07; 8:45 am]
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