Airworthiness Directives; Bombardier Inc. Model DHC-8-400 Series Airplanes, 45713-45715 [2011-19330]

Download as PDF Federal Register / Vol. 76, No. 147 / Monday, August 1, 2011 / Proposed Rules 3. In § 530.306— a. Remove ‘‘and’’ at the end of paragraph (a)(8); b. Remove the period at the end of paragraph (a)(9) and add ‘‘; or’’ in its place; and c. Add a new paragraph (a)(10) to read as follows: § 530.306 Evaluating agency requests for new or increased special rates. (a) * * * (10) The level of any locality pay authorized under 5 U.S.C. 5304 and any nonforeign area cost-of-living allowance authorized under 5 U.S.C. 5941(a)(1) for the area involved. * * * * * 4. In § 530.308— a. Revise paragraph (a); b. Remove paragraph (b); and c. Redesignate paragraphs (c) and (d) as (b) and (c), respectively. The revision reads as follows: § 530.308 Treatment of special rate as basic pay. * * * * * (a) The purposes for which a locality rate is considered to be a rate of basic pay in computing other payments or benefits to the extent provided by 5 CFR 531.610, except as otherwise provided in paragraphs (b) and (c) of this section; * * * * * PART 531—PAY UNDER THE GENERAL SCHEDULE 5. Revise the authority citation for part 531 to read as follows: Authority: 5 U.S.C. 5115, 5307, and 5338; sec. 4 of Public Law 103–89, 107 Stat. 981; and E.O. 12748, 56 FR 4521, 3 CFR, 1991 Comp., p. 316; Subpart B also issued under 5 U.S.C. 5303(g), 5305, 5333, 5334(a) and (b), and 7701(b)(2); Subpart D also issued under 5 U.S.C. 5335 and 7701(b)(2); Subpart E also issued under 5 U.S.C. 5336; Subpart F also issued under 5 U.S.C. 5304, 5305, and 5941(a); E.O. 12883, 58 FR 63281, 3 CFR, 1993 Comp., p. 682; and E.O. 13106, 63 FR 68151, 3 CFR, 1998 Comp., p. 224. Subpart F—Locality-Based Comparability Payment emcdonald on DSK2BSOYB1PROD with PROPOSALS 6. In § 531.610, revise paragraph (g) to read as follows: § 531.610 Treatment of locality rate as basic pay. * * * * * (g) Nonforeign area cost-of-living allowances and post differentials under 5 U.S.C. 5941 and 5 CFR part 591, subpart B; * * * * * VerDate Mar<15>2010 16:33 Jul 29, 2011 Jkt 223001 PART 536—GRADE AND PAY RETENTION 7. Revise the authority citation for part 536 to read as follows: Authority: 5 U.S.C. 5361–5366; sec. 4 of the Performance Management and Recognition System Termination Act of 1993 (Pub. L. 103–89), 107 Stat. 981; § 536.301(b) also issued under 5 U.S.C. 5334(b); § 536.308 also issued under sec. 301(d)(2) of the Federal Workforce Flexibility Act of 2004 (Pub. L. 108–411), 118 Stat. 2305; § 536.310 also issued under sections 1913 and 1918 of the Non-Foreign Area Retirement Equity Assurance Act of 2009 (subtitle B of title XIX of Pub. L. 111–84), 123 Stat. 2619; § 536.405 also issued under 5 U.S.C. 552, Freedom of Information Act, Public Law 92–502. Subpart C—Pay Retention 8. Add a new § 536.310 to read as follows: § 536.310 Exceptions for certain employees in nonforeign areas. (a) Notwithstanding §§ 536.304(b)(3) and 536.306(a), an employee may receive a retained rate higher than Executive Schedule level IV if such employee is receiving a special rate in excess of Executive Schedule level IV on January 1, 2012, that is converted to a retained rate, consistent with section 1913 of the Non-Foreign Retirement Equity Assurance Act of 2009 (subtitle B of title XIX of Pub. L. 111–84). This paragraph ceases to apply when the retained rate becomes equal to or falls below Executive Schedule level IV or when the employee ceases to be entitled to pay retention under § 536.308. (b) Notwithstanding 5 U.S.C. 5361(1) and § 536.102(b)(2), an employee who is employed on a temporary or term basis is not barred from receiving a retained rate if such employee— (1) Is receiving a special rate above Executive Schedule level IV on January 1, 2012, and is covered by paragraph (a) of this section; or (2) Is receiving a special rate incorporating an additional adjustment under section 1915(b)(1) of the NonForeign Retirement Equity Assurance Act (subtitle B of title XIX of Pub. L. 111–84) at the time the employee’s special rate schedule is reduced or terminated. [FR Doc. 2011–19361 Filed 7–29–11; 8:45 am] BILLING CODE 6325–39–P PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 45713 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2011–0720; Directorate Identifier 2010–NM–252–AD] RIN 2120–AA64 Airworthiness Directives; Bombardier Inc. Model DHC–8–400 Series Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: 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: SUMMARY: There has been one reported incident where the main landing gear (MLG) failed to extend during testing of the MLG alternate release system. Investigation revealed that the door release lever bushing was worn, causing an increase in the lateral movement of the release cable system. An increase in free-play within the release cable system would cause additional wear to the door release lever bushing and may lead to the turnbuckle fouling against the nacelle frame. The bushing wear at the door release lever and turnbuckle fouling could cause a failure in the alternate release system, preventing the landing gear from extending in the case of a failure of the normal MLG extension/ retraction system. * * * * * The unsafe condition is loss of control during landing. 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 September 15, 2011. 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 W12–40, 1200 New Jersey ADDRESSES: E:\FR\FM\01AUP1.SGM 01AUP1 45714 Federal Register / Vol. 76, No. 147 / Monday, August 1, 2011 / Proposed Rules Avenue, SE., Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this proposed AD, contact Bombardier Inc., Q–Series Technical Help Desk, 123 Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416–375– 4000; fax 416–375–4539; e-mail thd.qseries@aero.bombardier.com; Internet https://www.bombardier.com. 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 Operations office 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 Operations 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: Fabio Buttitta, Aerospace Engineer, Airframe and Mechanical Systems Branch, ANE–171, FAA, New York Aircraft Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New York 11590; telephone (516) 228– 7303; fax (516) 794–5531. SUPPLEMENTARY INFORMATION: emcdonald on DSK2BSOYB1PROD with PROPOSALS 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–2011–0720; Directorate Identifier 2010–NM–252–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 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. VerDate Mar<15>2010 18:53 Jul 29, 2011 Jkt 223001 Discussion Transport Canada Civil Aviation (TCCA), which is the aviation authority for Canada, has issued Canadian Airworthiness Directive CF–2010–26, dated August 17, 2010 (referred to after this as ‘‘the MCAI’’), to correct an unsafe condition for the specified products. The MCAI states: There has been one reported incident where the main landing gear (MLG) failed to extend during testing of the MLG alternate release system. Investigation revealed that the door release lever bushing was worn, causing an increase in the lateral movement of the release cable system. An increase in free-play within the release cable system would cause additional wear to the door release lever bushing and may lead to the turnbuckle fouling against the nacelle frame. The bushing wear at the door release lever and turnbuckle fouling could cause a failure in the alternate release system, preventing the landing gear from extending in the case of a failure of the normal MLG extension/ retraction system. This directive is to mandate the incorporation of a new maintenance task to prevent excessive free-play of the turnbuckle and cable within the alternate release system. The unsafe condition is loss of control during landing. You may obtain further information by examining the MCAI in the AD docket. Relevant Service Information Bombardier has issued Temporary Revision (TR) MRB–46, dated February 4, 2010, to Section 1–32, Systems/ Powerplant Maintenance Program, of the Maintenance Review Board (MRB) Report Part 1, of the Bombardier Q400 Dash 8 Maintenance Requirements Manual, PSM 1–84–7. 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 the 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 PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 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 highlighted in a NOTE within the proposed AD. Costs of Compliance Based on the service information, we estimate that this proposed AD would affect about 65 products of U.S. registry. We also estimate that it would take about 1 work-hour per product to comply with the basic requirements of this proposed AD. The average labor rate is $85 per work-hour. Based on these figures, we estimate the cost of the proposed AD on U.S. operators to be $5,525, or $85 per product. Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. ‘‘Subtitle VII: Aviation Programs,’’ describes in more detail the scope of the Agency’s authority. We are issuing this rulemaking under the authority described in ‘‘Subtitle VII, Part A, Subpart III, Section 44701: General requirements.’’ Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. Regulatory Findings We determined that this 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; E:\FR\FM\01AUP1.SGM 01AUP1 Federal Register / Vol. 76, No. 147 / Monday, August 1, 2011 / Proposed Rules 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, 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: Bombardier Inc.: Docket No. FAA–2011– 0720; Directorate Identifier 2010–NM– 252–AD. Comments Due Date (a) We must receive comments by September 15, 2011. * * * * The unsafe condition is loss of control during landing. Compliance (f) You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Actions (g) Within 30 days after the effective date of this AD, revise the maintenance program by incorporating Task 323400–203 specified in Bombardier Temporary Revision (TR) MRB–46, dated February 4, 2010, to Section 1–32, Systems/Powerplant Maintenance Program, of the Maintenance Review Board (MRB) Report Part 1, of the Bombardier Q400 Dash 8 Maintenance Requirements Manual, PSM 1–84–7. The initial compliance time for the actions specified in Bombardier TR MRB–46, dated February 4, 2010, is within 6,000 flight hours after the effective date of this AD. Thereafter, operate the airplane according to the procedures and compliance times in Bombardier TR MRB–46, dated February 4, 2010. No Alternative Actions, Intervals, and/or Critical Design Configuration Control Limitations (CDCCLs) (h) After accomplishing the revision required by paragraph (g) of this AD, no alternative actions (e.g., inspections), intervals, and/or CDCCLs may be used unless the actions, intervals, and/or CDCCLs are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (i) of this AD. Note 1: This AD differs from the MCAI and/or service information as follows: No differences. Applicability (c) This AD applies to Bombardier Inc. Model DHC–8–400, –401, and –402 airplanes, certificated in any category, having serial numbers 4001 and subsequent. Subject (d) Air Transport Association (ATA) of America Code 32: Landing Gear. emcdonald on DSK2BSOYB1PROD with PROPOSALS * FAA AD Differences Affected ADs (b) None. Reason (e) The mandatory continuing airworthiness information (MCAI) states: There has been one reported incident where the main landing gear (MLG) failed to extend during testing of the MLG alternate release system. Investigation revealed that the door release lever bushing was worn, causing an increase in the lateral movement of the release cable system. An increase in free-play within the release cable system would cause additional wear to the door release lever bushing and may lead to the turnbuckle fouling against the nacelle frame. The bushing wear at the door release lever and turnbuckle fouling could cause a failure in the alternate release system, preventing the landing gear from extending in the case VerDate Mar<15>2010 of a failure of the normal MLG extension/ retraction system. 18:53 Jul 29, 2011 Jkt 223001 Other FAA AD Provisions (i) 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. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the New York ACO, Send it to ATTN: Program Manager, Continuing Operational Safety, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516–228–7300; fax 516–794–5531. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. The AMOC approval letter must specifically reference this AD. (2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective PO 00000 Frm 00006 Fmt 4702 Sfmt 4702 45715 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. Related Information (j) Refer to MCAI Canadian Airworthiness Directive CF–2010–26, dated August 17, 2010; and Bombardier Temporary Revision MRB–46, dated February 4, 2010, to Section 1–32, Systems/Powerplant Maintenance Program, of the Maintenance Review Board Report Part 1, of the Bombardier Q400 Dash 8 Maintenance Requirements Manual, PSM 1–84–7; for related information. Issued in Renton, Washington, on July 22, 2011. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2011–19330 Filed 7–29–11; 8:45 am] BILLING CODE 4910–13–P FEDERAL TRADE COMMISSION 16 CFR Part 305 [RIN 3084–AB03] Appliance Labeling Rule Federal Trade Commission (FTC or Commission). ACTION: Proposed rule. AGENCY: The Commission proposes to expand coverage of the Lighting Facts label to include all screw-based and GU–10 and GU–24 pin-based light bulbs. Under this proposal, manufacturers would have 21⁄2 years to conform their products and packaging to the labeling requirements. The Commission also proposes to require a specific test procedure (LM–79) for measuring light output for all light emitting diode (LED) bulbs covered by the Rule. Finally, the Commission is not proposing amendments for several other issues such as watt-equivalent standards, directional light disclosures, and lead content disclosures. DATES: Written comments must be received on or before September 22, 2011. SUMMARY: Interested parties may file a comment online or on paper, by following the instructions in the Request for Comment part of the SUPPLEMENTARY INFORMATION section below. Write ‘‘Notice of Proposed Rulemaking on Expanded Bulb Coverage for the Lighting Facts Label (16 CFR part 305) (Project No. P084206)’’ on your comment, and file your comment online at https:// ftcpublic.commentworks.com/ftc/ lampcoveragenprm, by following the ADDRESSES: E:\FR\FM\01AUP1.SGM 01AUP1

Agencies

[Federal Register Volume 76, Number 147 (Monday, August 1, 2011)]
[Proposed Rules]
[Pages 45713-45715]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-19330]


=======================================================================
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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2011-0720; Directorate Identifier 2010-NM-252-AD]
RIN 2120-AA64


Airworthiness Directives; Bombardier Inc. Model DHC-8-400 Series 
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:

    There has been one reported incident where the main landing gear 
(MLG) failed to extend during testing of the MLG alternate release 
system. Investigation revealed that the door release lever bushing 
was worn, causing an increase in the lateral movement of the release 
cable system. An increase in free-play within the release cable 
system would cause additional wear to the door release lever bushing 
and may lead to the turnbuckle fouling against the nacelle frame. 
The bushing wear at the door release lever and turnbuckle fouling 
could cause a failure in the alternate release system, preventing 
the landing gear from extending in the case of a failure of the 
normal MLG extension/retraction system.
* * * * *
The unsafe condition is loss of control during landing. 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 September 15, 
2011.

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 W12-40, 1200 New 
Jersey

[[Page 45714]]

Avenue, SE., Washington, DC, between 9 a.m. and 5 p.m., Monday through 
Friday, except Federal holidays.
    For service information identified in this proposed AD, contact 
Bombardier Inc., Q-Series Technical Help Desk, 123 Garratt Boulevard, 
Toronto, Ontario M3K 1Y5, Canada; telephone 416-375-4000; fax 416-375-
4539; e-mail thd.qseries@aero.bombardier.com; Internet https://www.bombardier.com. 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 Operations office 
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 Operations 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: Fabio Buttitta, Aerospace Engineer, 
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft 
Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New 
York 11590; telephone (516) 228-7303; fax (516) 794-5531.

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-2011-0720; 
Directorate Identifier 2010-NM-252-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 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

    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive CF-
2010-26, dated August 17, 2010 (referred to after this as ``the 
MCAI''), to correct an unsafe condition for the specified products. The 
MCAI states:

    There has been one reported incident where the main landing gear 
(MLG) failed to extend during testing of the MLG alternate release 
system. Investigation revealed that the door release lever bushing 
was worn, causing an increase in the lateral movement of the release 
cable system. An increase in free-play within the release cable 
system would cause additional wear to the door release lever bushing 
and may lead to the turnbuckle fouling against the nacelle frame. 
The bushing wear at the door release lever and turnbuckle fouling 
could cause a failure in the alternate release system, preventing 
the landing gear from extending in the case of a failure of the 
normal MLG extension/retraction system.
    This directive is to mandate the incorporation of a new 
maintenance task to prevent excessive free-play of the turnbuckle 
and cable within the alternate release system.

The unsafe condition is loss of control during landing. You may obtain 
further information by examining the MCAI in the AD docket.

Relevant Service Information

    Bombardier has issued Temporary Revision (TR) MRB-46, dated 
February 4, 2010, to Section 1-32, Systems/Powerplant Maintenance 
Program, of the Maintenance Review Board (MRB) Report Part 1, of the 
Bombardier Q400 Dash 8 Maintenance Requirements Manual, PSM 1-84-7. 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 the 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 
highlighted in a NOTE within the proposed AD.

Costs of Compliance

    Based on the service information, we estimate that this proposed AD 
would affect about 65 products of U.S. registry. We also estimate that 
it would take about 1 work-hour per product to comply with the basic 
requirements of this proposed AD. The average labor rate is $85 per 
work-hour. Based on these figures, we estimate the cost of the proposed 
AD on U.S. operators to be $5,525, or $85 per product.

Authority for This Rulemaking

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

Regulatory Findings

    We determined that this 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;

[[Page 45715]]

    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, 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:

Bombardier Inc.: Docket No. FAA-2011-0720; Directorate Identifier 
2010-NM-252-AD.

Comments Due Date

    (a) We must receive comments by September 15, 2011.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Bombardier Inc. Model DHC-8-400, -401, 
and -402 airplanes, certificated in any category, having serial 
numbers 4001 and subsequent.

Subject

    (d) Air Transport Association (ATA) of America Code 32: Landing 
Gear.

Reason

    (e) The mandatory continuing airworthiness information (MCAI) 
states:
    There has been one reported incident where the main landing gear 
(MLG) failed to extend during testing of the MLG alternate release 
system. Investigation revealed that the door release lever bushing 
was worn, causing an increase in the lateral movement of the release 
cable system. An increase in free-play within the release cable 
system would cause additional wear to the door release lever bushing 
and may lead to the turnbuckle fouling against the nacelle frame. 
The bushing wear at the door release lever and turnbuckle fouling 
could cause a failure in the alternate release system, preventing 
the landing gear from extending in the case of a failure of the 
normal MLG extension/retraction system.
* * * * *
The unsafe condition is loss of control during landing.

Compliance

    (f) You are responsible for having the actions required by this 
AD performed within the compliance times specified, unless the 
actions have already been done.

Actions

    (g) Within 30 days after the effective date of this AD, revise 
the maintenance program by incorporating Task 323400-203 specified 
in Bombardier Temporary Revision (TR) MRB-46, dated February 4, 
2010, to Section 1-32, Systems/Powerplant Maintenance Program, of 
the Maintenance Review Board (MRB) Report Part 1, of the Bombardier 
Q400 Dash 8 Maintenance Requirements Manual, PSM 1-84-7. The initial 
compliance time for the actions specified in Bombardier TR MRB-46, 
dated February 4, 2010, is within 6,000 flight hours after the 
effective date of this AD. Thereafter, operate the airplane 
according to the procedures and compliance times in Bombardier TR 
MRB-46, dated February 4, 2010.

No Alternative Actions, Intervals, and/or Critical Design Configuration 
Control Limitations (CDCCLs)

    (h) After accomplishing the revision required by paragraph (g) 
of this AD, no alternative actions (e.g., inspections), intervals, 
and/or CDCCLs may be used unless the actions, intervals, and/or 
CDCCLs are approved as an alternative method of compliance (AMOC) in 
accordance with the procedures specified in paragraph (i) of this 
AD.

FAA AD Differences

    Note 1: This AD differs from the MCAI and/or service information 
as follows: No differences.

Other FAA AD Provisions

    (i) 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. In accordance with 14 CFR 39.19, 
send your request to your principal inspector or local Flight 
Standards District Office, as appropriate. If sending information 
directly to the New York ACO, Send it to ATTN: Program Manager, 
Continuing Operational Safety, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; telephone 516-228-7300; fax 516-794-5531. Before 
using any approved AMOC, notify your appropriate principal 
inspector, or lacking a principal inspector, the manager of the 
local flight standards district office/certificate holding district 
office. The AMOC approval letter must specifically reference this 
AD.
    (2) Airworthy Product: For any requirement in this AD to obtain 
corrective actions from a manufacturer or other source, use these 
actions if they are FAA-approved. Corrective actions are considered 
FAA-approved if they are approved by the State of Design Authority 
(or their delegated agent). You are required to assure the product 
is airworthy before it is returned to service.

Related Information

    (j) Refer to MCAI Canadian Airworthiness Directive CF-2010-26, 
dated August 17, 2010; and Bombardier Temporary Revision MRB-46, 
dated February 4, 2010, to Section 1-32, Systems/Powerplant 
Maintenance Program, of the Maintenance Review Board Report Part 1, 
of the Bombardier Q400 Dash 8 Maintenance Requirements Manual, PSM 
1-84-7; for related information.

    Issued in Renton, Washington, on July 22, 2011.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2011-19330 Filed 7-29-11; 8:45 am]
BILLING CODE 4910-13-P
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