Airworthiness Directives; DG Flugzeugbau GmbH Model DG-500MB Powered Sailplanes, 48292-48294 [E8-18809]

Download as PDF 48292 Federal Register / Vol. 73, No. 161 / Tuesday, August 19, 2008 / Rules and Regulations List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. tank high level sensor wiring, including corrective actions, as necessary. Corrective actions include replacing any damaged internal fuel tank high level sensor wiring and removing excess wiring. Adoption of the Amendment Actions and Compliance (f) Unless already done: Within 24 months after the effective date of this AD, do the following actions. (1) Modify the LH and RH wing fuel boost pump wiring in accordance with paragraphs 2.B. and 2.C. of the Accomplishment Instructions of BAE Systems (Operations) Limited Service Bulletin J41–28–014, Revision 1, dated December 21, 2007. (2) Inspect the LH and RH wing fuel high level sensor wiring in accordance with paragraph 2.D. of the Accomplishment Instructions of BAE Systems (Operations) Limited Service Bulletin J41–28–014, Revision 1, dated December 21, 2007. (3) When excess wiring and/or damaged wiring is found during the inspection required by paragraph (f)(2) of this AD, before next flight, accomplish the corrective actions as specified in paragraph 2.D. of the Accomplishment Instructions of BAE Systems (Operations) Limited Service Bulletin J41–28–014, Revision 1, dated December 21, 2007. Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: I PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: I Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new AD: I 2008–17–04 BAE Systems (Operations) Limited (Formerly British Aerospace Regional Aircraft): Amendment 39– 15642. Docket No. FAA–2008–0622; Directorate Identifier 2008–NM–064–AD. Effective Date (a) This airworthiness directive (AD) becomes effective September 23, 2008. FAA AD Differences Affected ADs (b) None. Note: This AD differs from the MCAI and/ or service information as follows: No differences. Applicability (c) This AD applies to all BAE Systems (Operations) Limited Model Jetstream 4101 airplanes, certificated in any category, all serial numbers. 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, Transport Airplane Directorate, 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: Todd Thompson, Aerospace Engineer, International Branch, ANM–116, Transport Airplane Directorate, FAA, 1601 Lind Avenue, SW., Renton, Washington 98057–3356; telephone (425) 227–1175; fax (425) 227–1149. 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, the Office of Management and Budget (OMB) has approved the information collection requirements and has assigned OMB Control Number 2120–0056. ebenthall on PRODPC60 with RULES Subject (d) Air Transport Association (ATA) of America Code 28: Fuel. Reason (e) The mandatory continuing airworthiness information (MCAI) states: Resulting from the assessment of fuel tank wiring installations required by SFAR 88 (Special Federal Aviation Regulation 88) and equivalent JAA/EASA (Joint Aviation Authorities/European Aviation Safety Agency) policy, BAE Systems identified two features in the Jetstream 4100 where the need for design changes was apparent. One of these is addressed by Service Bulletin (SB) J41–28–014 which introduces changes to the wiring harness installations to the left (LH) and right (RH) fuel boost pumps, identified by modification number JM41672. In addition, to detect excessive cable lengths and evidence of chafing damage, SB J41–28– 014 provides instructions to inspect and correct, as necessary, the internal fuel tank wiring routed to the LH and RH high level sensors. Internal fuel tank wiring chafing damage, if not corrected, could lead to ignition of fuel vapours and subsequent fuel tank explosion. For the reason stated above, this EASA Airworthiness Directive (AD) requires the replacement of the (LH and RH) fuel boost pump metallic conduit assemblies with loom assemblies and the inspection of internal fuel VerDate Aug<31>2005 15:10 Aug 18, 2008 Jkt 214001 2008; and BAE Systems (Operations) Limited Service Bulletin J41–28–014, Revision 1, dated December 21, 2007; for related information. Material Incorporated by Reference (i) You must use BAE Systems (Operations) Limited Service Bulletin J41–28–014, Revision 1, dated December 21, 2007, 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 British Aerospace Regional Aircraft American Support, 13850 Mclearen Road, Herndon, Virginia 20171. (3) You may review copies at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or 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: https:// www.archives.gov/federal-register/cfr/ibrlocations.html. Issued in Renton, Washington, on August 5, 2008. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E8–18810 Filed 8–18–08; 8:45 am] BILLING CODE 4910–13–P Related Information (h) Refer to MCAI EASA Airworthiness Directive 2008–0041, dated February 27, PO 00000 Frm 00014 Fmt 4700 Sfmt 4700 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2008–0649; Directorate Identifier 2008–CE–038–AD; Amendment 39–15646; AD 2008–17–08] RIN 2120–AA64 Airworthiness Directives; DG Flugzeugbau GmbH Model DG–500MB Powered Sailplanes Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. AGENCY: SUMMARY: We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued 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: A DG–500MB experienced, after the engine shutdown, an uncommanded retraction of its powerplant. Investigations revealed that some bolts of the extension retraction mechanism had E:\FR\FM\19AUR1.SGM 19AUR1 Federal Register / Vol. 73, No. 161 / Tuesday, August 19, 2008 / Rules and Regulations fractured because of fatigue stress due to increasing push-pull loads acting on incorrectly tightened screws. This condition, if not corrected, could lead to damage of the propeller and the fuselage, thereby reducing the structural integrity of the sailplane. Comments We gave the public the opportunity to participate in developing this AD. We received no comments on the NPRM or on the determination of the cost to the public. We are issuing this AD to require actions to correct the unsafe condition on these products. Conclusion We reviewed the available data and determined that air safety and the public interest require adopting the AD as proposed. This AD becomes effective September 23, 2008. On September 23, 2008, the Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD. DATES: You may examine the AD docket on the Internet at https:// www.regulations.gov or in person at 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. ADDRESSES: FOR FURTHER INFORMATION CONTACT: Gregory Davison, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329– 4130; fax: (816) 329–4090. SUPPLEMENTARY INFORMATION: Discussion ebenthall on PRODPC60 with RULES We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to include an AD that would apply to the specified products. That NPRM was published in the Federal Register on June 13, 2008 (73 FR 33743). That NPRM proposed to correct an unsafe condition for the specified products. The MCAI states: A DG–500MB experienced, after the engine shutdown, an uncommanded retraction of its powerplant. Investigations revealed that some bolts of the extension retraction mechanism had fractured because of fatigue stress due to increasing push-pull loads acting on incorrectly tightened screws. This condition, if not corrected, could lead to damage of the propeller and the fuselage, thereby reducing the structural integrity of the sailplane. To address this unsafe condition, this Airworthiness Directive mandates the replacement of eight bolts, the four connecting the fork 5M203 to the 5M204 adapter and those connecting the adapter 5M204 to the spindle drive, by new ones of higher strength and, a rework of the coupling of the 5M203 fork to the 5M204 adapter as well as the coupling of the 5M204 adapter to the spindle drive, by glueing the parts together, in addition to the pre-existing bolts. You may obtain further information by examining the MCAI in the AD docket. VerDate Aug<31>2005 15:10 Aug 18, 2008 Jkt 214001 Differences Between This AD and the MCAI or Service Information We have reviewed the MCAI and related service information and, in general, agree with their substance. But we might have found it necessary to use different words from those in the MCAI to ensure the AD is clear for U.S. operators and is enforceable. In making these changes, we do not intend to differ substantively from the information provided in the MCAI and related service information. We might also have required different actions in this AD from those in the MCAI in order to follow FAA policies. Any such differences are highlighted in a NOTE within the AD. Costs of Compliance We estimate that this AD will affect 4 products of U.S. registry. We also estimate that it will take about 3 workhours per product to comply with the basic requirements of this AD. The average labor rate is $80 per work-hour. Required parts will cost about $63 per product. Based on these figures, we estimate the cost of the AD on U.S. operators to be $1,212, or $303 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. PO 00000 Frm 00015 Fmt 4700 Sfmt 4700 48293 Regulatory Findings We determined that this AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify this AD: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866; (2) Is not a ‘‘significant rule’’ under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. We prepared a regulatory evaluation of the estimated costs to comply with this AD and placed it in the AD Docket. Examining the AD Docket You may examine the AD docket on the Internet at 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 the NPRM, the regulatory evaluation, any comments received, and other information. The 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. 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: I PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: I Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new AD: I 2008–17–08 DG Flugzeugbau GmbH: Amendment 39–15646; Docket No. FAA–2008–0649; Directorate Identifier 2008–CE–038–AD. E:\FR\FM\19AUR1.SGM 19AUR1 48294 Federal Register / Vol. 73, No. 161 / Tuesday, August 19, 2008 / Rules and Regulations Effective Date (a) This airworthiness directive (AD) becomes effective September 23, 2008. Affected ADs (b) None. Applicability (c) This AD applies to DG–500MB powered sailplanes, all serial numbers, certificated in any category. Subject (d) Air Transport Association of America (ATA) Code 71: Power Plant. Reason (e) The mandatory continuing airworthiness information (MCAI) states: A DG–500MB experienced, after the engine shutdown, an uncommanded retraction of its powerplant. Investigations revealed that some bolts of the extension retraction mechanism had fractured because of fatigue stress due to increasing push-pull loads acting on incorrectly tightened screws. This condition, if not corrected, could lead to damage of the propeller and the fuselage, thereby reducing the structural integrity of the sailplane. To address this unsafe condition, this Airworthiness Directive mandates the replacement of eight bolts, the four connecting the fork 5M203 to the 5M204 adapter and those connecting the adapter 5M204 to the spindle drive, by new ones of higher strength and, a rework of the coupling of the 5M203 fork to the 5M204 adapter as well as the coupling of the 5M204 adapter to the spindle drive, by glueing the parts together, in addition to the pre-existing bolts. Actions and Compliance (f) Unless already done, within the next 30 days after September 23, 2008 (the effective date of this AD), modify the spindle drive assembly in accordance with DG Flugzeugbau GmbH Technical Note No. 843/ 27, dated April 14, 2008, and DG Flugzeugbau GmbH Drawing 5M210, dated April 14, 2008. FAA AD Differences ebenthall on PRODPC60 with RULES 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, Standards 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: Greg Davison, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329–4130; fax: (816) 329– 4090. Before using any approved AMOC on any powered sailplane 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. VerDate Aug<31>2005 15:10 Aug 18, 2008 Jkt 214001 (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. DEPARTMENT OF TRANSPORTATION Related Information AGENCY: (h) Refer to MCAI European Aviation Safety Agency (EASA) AD No. 2008–0095, dated May 16, 2008; and DG Flugzeugbau GmbH Technical Note No. 843/27, dated April 14, 2008, for related information. Material Incorporated by Reference (i) You must use DG Flugzeugbau GmbH Technical Note No. 843/27, dated April 14, 2008, and DG Flugzeugbau GmbH Drawing 5M210, dated April 14, 2008, 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 DG Flugzeugbau GmbH, Im Schollengarten 20, D–76646 Bruchsal 4, Federal Republic of Germany. (3) You may review copies at the FAA, Central Region, Office of the Regional Counsel, 901 Locust, Room 506, Kansas City, Missouri 64106; or 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: https://www.archives.gov/federal-register/ cfr/ibr-locations.html. Issued in Kansas City, Missouri, on August 8, 2008. Kim Smith, Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. E8–18809 Filed 8–18–08; 8:45 am] BILLING CODE 4910–13–P PO 00000 Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2008–0642; Directorate Identifier 2008–NM–039–AD; Amendment 39–15643; AD 2008–17–05] RIN 2120–AA64 Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB–135 Airplanes, and Model EMB–145, –145ER, –145MR, –145LR, –145XR, –145MP, and –145EP Airplanes Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. SUMMARY: The FAA is superseding an existing airworthiness directive (AD), which applies to certain EMBRAER Model EMB–135 airplanes and Model EMB–145, –145ER, –145MR, –145LR, –145XR, –145MP, and –145EP airplanes. That AD currently requires replacing the metallic tubes enclosing the vent and pilot valve wires in the left- and right-hand wing fuel tanks with non-conductive hoses. This new AD adds airplanes to the applicability of the existing AD. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent an ignition source inside the fuel tank that could ignite fuel vapor and cause a fuel tank explosion and loss of the airplane. DATES: This AD becomes effective September 23, 2008. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in the AD as of September 23, 2008. On July 19, 2007 (72 FR 32780, June 14, 2007), the Director of the Federal Register approved the incorporation by reference of certain other documents. ADDRESSES: For service information identified in this AD, contact Empresa Brasileira de Aeronautica S.A. (EMBRAER), P.O. Box 343—CEP 12.225, Sao Jose dos Campos—SP, Brazil. 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 AD, the regulatory evaluation, any comments received, and other information. The address for the Docket Office (telephone 800–647–5527) Frm 00016 Fmt 4700 Sfmt 4700 E:\FR\FM\19AUR1.SGM 19AUR1

Agencies

[Federal Register Volume 73, Number 161 (Tuesday, August 19, 2008)]
[Rules and Regulations]
[Pages 48292-48294]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-18809]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2008-0649; Directorate Identifier 2008-CE-038-AD; 
Amendment 39-15646; AD 2008-17-08]
RIN 2120-AA64


Airworthiness Directives; DG Flugzeugbau GmbH Model DG-500MB 
Powered Sailplanes

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Final rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for the 
products listed above. This AD results from mandatory continuing 
airworthiness information (MCAI) issued 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:

    A DG-500MB experienced, after the engine shutdown, an 
uncommanded retraction of its powerplant.
    Investigations revealed that some bolts of the extension 
retraction mechanism had

[[Page 48293]]

fractured because of fatigue stress due to increasing push-pull 
loads acting on incorrectly tightened screws.
    This condition, if not corrected, could lead to damage of the 
propeller and the fuselage, thereby reducing the structural 
integrity of the sailplane.

We are issuing this AD to require actions to correct the unsafe 
condition on these products.

DATES: This AD becomes effective September 23, 2008.
    On September 23, 2008, the Director of the Federal Register 
approved the incorporation by reference of certain publications listed 
in this AD.

ADDRESSES: You may examine the AD docket on the Internet at https://
www.regulations.gov or in person at 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: Gregory Davison, Aerospace Engineer, 
FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, 
Missouri 64106; telephone: (816) 329-4130; fax: (816) 329-4090.

SUPPLEMENTARY INFORMATION: 

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 to include an AD that would apply to the specified products. 
That NPRM was published in the Federal Register on June 13, 2008 (73 FR 
33743). That NPRM proposed to correct an unsafe condition for the 
specified products. The MCAI states:

    A DG-500MB experienced, after the engine shutdown, an 
uncommanded retraction of its powerplant.
    Investigations revealed that some bolts of the extension 
retraction mechanism had fractured because of fatigue stress due to 
increasing push-pull loads acting on incorrectly tightened screws.
    This condition, if not corrected, could lead to damage of the 
propeller and the fuselage, thereby reducing the structural 
integrity of the sailplane.
    To address this unsafe condition, this Airworthiness Directive 
mandates the replacement of eight bolts, the four connecting the 
fork 5M203 to the 5M204 adapter and those connecting the adapter 
5M204 to the spindle drive, by new ones of higher strength and, a 
rework of the coupling of the 5M203 fork to the 5M204 adapter as 
well as the coupling of the 5M204 adapter to the spindle drive, by 
glueing the parts together, in addition to the pre-existing bolts.

You may obtain further information by examining the MCAI in the AD 
docket.

Comments

    We gave the public the opportunity to participate in developing 
this AD. We received no comments on the NPRM or on the determination of 
the cost to the public.

Conclusion

    We reviewed the available data and determined that air safety and 
the public interest require adopting the AD as proposed.

Differences Between This AD and the MCAI or Service Information

    We have reviewed the MCAI and related service information and, in 
general, agree with their substance. But we might have found it 
necessary to use different words from those in the MCAI to ensure the 
AD is clear for U.S. operators and is enforceable. In making these 
changes, we do not intend to differ substantively from the information 
provided in the MCAI and related service information.
    We might also have required different actions in this AD from those 
in the MCAI in order to follow FAA policies. Any such differences are 
highlighted in a NOTE within the AD.

Costs of Compliance

    We estimate that this AD will affect 4 products of U.S. registry. 
We also estimate that it will take about 3 work-hours per product to 
comply with the basic requirements of this AD. The average labor rate 
is $80 per work-hour. Required parts will cost about $63 per product.
    Based on these figures, we estimate the cost of the AD on U.S. 
operators to be $1,212, or $303 per product.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. ``Subtitle VII: Aviation 
Programs,'' describes in more detail the scope of the Agency's 
authority.
    We are issuing this rulemaking under the authority described in 
``Subtitle VII, Part A, Subpart III, Section 44701: General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    We determined that this AD will not have federalism implications 
under Executive Order 13132. This AD will not have a substantial direct 
effect on the States, on the relationship between the national 
government and the States, or on the distribution of power and 
responsibilities among the various levels of government.
    For the reasons discussed above, I certify this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866;
    (2) Is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979); and
    (3) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.
    We prepared a regulatory evaluation of the estimated costs to 
comply with this AD and placed it in the AD Docket.

Examining the AD Docket

    You may examine the AD docket on the Internet at 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 the NPRM, the regulatory evaluation, 
any comments received, and other information. The 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.

List of Subjects in 14 CFR Part 39

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

Adoption of the Amendment

0
Accordingly, under the authority delegated to me by the Administrator, 
the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
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]

0
2. The FAA amends Sec.  39.13 by adding the following new AD:

2008-17-08 DG Flugzeugbau GmbH: Amendment 39-15646; Docket No. FAA-
2008-0649; Directorate Identifier 2008-CE-038-AD.

[[Page 48294]]

Effective Date

    (a) This airworthiness directive (AD) becomes effective 
September 23, 2008.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to DG-500MB powered sailplanes, all serial 
numbers, certificated in any category.

Subject

    (d) Air Transport Association of America (ATA) Code 71: Power 
Plant.

Reason

    (e) The mandatory continuing airworthiness information (MCAI) 
states:
    A DG-500MB experienced, after the engine shutdown, an 
uncommanded retraction of its powerplant.
    Investigations revealed that some bolts of the extension 
retraction mechanism had fractured because of fatigue stress due to 
increasing push-pull loads acting on incorrectly tightened screws.
    This condition, if not corrected, could lead to damage of the 
propeller and the fuselage, thereby reducing the structural 
integrity of the sailplane.
    To address this unsafe condition, this Airworthiness Directive 
mandates the replacement of eight bolts, the four connecting the 
fork 5M203 to the 5M204 adapter and those connecting the adapter 
5M204 to the spindle drive, by new ones of higher strength and, a 
rework of the coupling of the 5M203 fork to the 5M204 adapter as 
well as the coupling of the 5M204 adapter to the spindle drive, by 
glueing the parts together, in addition to the pre-existing bolts.

Actions and Compliance

    (f) Unless already done, within the next 30 days after September 
23, 2008 (the effective date of this AD), modify the spindle drive 
assembly in accordance with DG Flugzeugbau GmbH Technical Note No. 
843/27, dated April 14, 2008, and DG Flugzeugbau GmbH Drawing 5M210, 
dated April 14, 2008.

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, 
Standards 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: Greg Davison, Aerospace Engineer, FAA, Small 
Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 
64106; telephone: (816) 329-4130; fax: (816) 329-4090. Before using 
any approved AMOC on any powered sailplane 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 MCAI European Aviation Safety Agency (EASA) AD No. 
2008-0095, dated May 16, 2008; and DG Flugzeugbau GmbH Technical 
Note No. 843/27, dated April 14, 2008, for related information.

Material Incorporated by Reference

    (i) You must use DG Flugzeugbau GmbH Technical Note No. 843/27, 
dated April 14, 2008, and DG Flugzeugbau GmbH Drawing 5M210, dated 
April 14, 2008, 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 DG 
Flugzeugbau GmbH, Im Schollengarten 20, D-76646 Bruchsal 4, Federal 
Republic of Germany.
    (3) You may review copies at the FAA, Central Region, Office of 
the Regional Counsel, 901 Locust, Room 506, Kansas City, Missouri 
64106; or 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: https://www.archives.gov/federal-
register/cfr/ibr-locations.html.

    Issued in Kansas City, Missouri, on August 8, 2008.
Kim Smith,
Manager, Small Airplane Directorate, Aircraft Certification Service.
 [FR Doc. E8-18809 Filed 8-18-08; 8:45 am]
BILLING CODE 4910-13-P
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