Source: http://thefederalregister.com/2009/12/04/E9-28763.html
Timestamp: 2019-06-20 05:25:31
Document Index: 324387622

Matched Legal Cases: ['art 2', 'art 2', 'art 2', 'art 2', '§ 39', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 51']

Federal Register | Airworthiness Directives; Bombardier Model DHC-8-400, DHC-8-4
[Docket No. FAA-2009-1106; Directorate Identifier 2009-NM-171-AD; Amendment 39-16122; AD 2008-09-24 R1]
Airworthiness Directives; Bombardier Model DHC-8-400, DHC-8-401, and DHC-8-402 Airplanes
SUMMARY: Bombardier Aerospace has completed a system safety review of the aircraft fuel system against fuel tank safety standards introduced in Chapter 525 of the Airworthiness Manual through Notice of Proposed Amendment (NPA) 2002-043. The identified non-compliances were then assessed using Transport Canada Policy Letter No. 525-001, to determine if mandatory corrective action is required.
The assessment showed that it is necessary to introduce Critical Design Configuration Control Limitations (CDCCL), in order to preserve critical fuel tank system ignition source prevention features during configuration changes such as modifications and repairs, or during maintenance actions. Failure to preserve critical fuel tank system ignition source prevention features could result in a fuel tank explosion. * * *
DATES: The Director of the Federal Register approved the incorporation by reference of a certain publication listed in the AD as of December 21, 2009.
On June 6, 2008 (73 FR 24143, May 2, 2008), the Director of the Federal Register approved the incorporation by reference of certain other publications listed in the AD.
We must receive comments on this AD by January 19, 2010.
*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 Avenue, SE., Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays.
For service information identified in this AD, contact Bombardier, Inc., 400 Cote-Vertu Road West, Dorval, Quebec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-7401; e-mailthd.qseries@aero.bombardier.com;Internethttp://www.bombardier.com.
You may examine the AD docket on the Internet athttp://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 AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (telephone (800) 647-5527) is in theADDRESSESsection. Comments will be available in the AD docket shortly after receipt.
FOR FURTHER INFORMATION CONTACT: Richard Fiesel, 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) 228-7304; fax (516) 794-5531.
On April 24, 2008, we issued AD 2008-09-24, Amendment 39-15505 (73 FR 24143, May 2, 2008). That AD applied to all Bombardier Model DHC-8-400, DHC-8-401, and DHC-8-402 airplanes. That AD required revising the Airworthiness Limitations Section (ALS) of the Instructions for Continued Airworthiness to incorporate the CDCCLs specified in Dash 8 Q400 (Bombardier) Temporary Revisions (TRs) ALI-55, dated April 19, 2006; and ALI-56, dated April 19, 2006; to Part 2, “Airworthiness Limitations Items,” of the Bombardier Dash 8 Q400 Maintenance Requirements Manual (MRM) PSM 1-84-7.
AD 2008-09-24 cites Dash 8 Q400 (Bombardier) Temporary Revision (TR) ALI-55, dated April 19, 2006; and TR ALI-56, dated April 19, 2006; to Part 2, “Airworthiness Limitations Items,” of the Bombardier Dash 8 Q400 Maintenance Requirements Manual PSM 1-84-7. Since we issued that AD, Bombardier has revised the referenced service information. We have reviewed Dash 8 Q400 (Bombardier) TR ALI-76, dated January 24, 2008, to Part 2, “Airworthiness Limitations Items,” of the Bombardier Dash 8 Q400 MRM PSM1-84-7. The revised TR supersedes and cancels TR ALI-56 and updates applicability information, but adds no new procedures.
This product has been approved by the aviation authority of another country, and is approved for operation in the United States. This new AD retains the requirements of the existing AD, and adds a new note to clarify the intended effect of the AD on spare and on-airplane fuel tank system components.
AD 2008-09-24 allowed the use of alternative CDCCLs if they are part of a later revision of Part 2, Revision 4, dated October 30, 2003, of the Bombardier Dash 8 Q400 MRM PSM 1-84-7, Revision 4. That provision has been removed from this AD. Allowing the use of “a later revision” of a specific service document violates Office of the Federal Register regulations for approving materials that are incorporated by reference. Affected operators, however, may request approval to use an alternative CDCCL that is part of a later revision of the referenced service document as an alternative method of compliance, under the provisions of paragraph (g)(1) of this AD.
We estimate that this AD will affect about 45 products of U.S. registry. We also estimate that it will take about 1 work-hour per product to comply with the basic requirements of this AD. The average labor rate is $80 per work-hour. Based on these figures, we estimate the cost of this AD to the U.S. operators to be $3,600, or $80 per product.
This AD is a final rule that involves requirements affecting flight safety, and we did not precede it by notice and opportunity for public comment. We invite you to send any written relevant data, views, or arguments about this AD. Send your comments to an address listed under theADDRESSESsection. Include “Docket No. FAA-2009-1106; Directorate Identifier 2009-NM-171-AD” at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this AD. We will consider all comments received by the closing date and may amend this AD because of those comments.
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.
2. The FAA amends § 39.13 by removing amendment 39-15505 (73 FR 24143, May 2, 2008) and adding the following new AD: 2008-09-24 R1BOMBARDIER, INC. (Formerly de Havilland, Inc.):Amendment 39-16122. Docket No. FAA-2009-1106; Directorate Identifier 2009-NM-171-AD. Effective Date
(a) This airworthiness directive (AD) becomes effective December 21, 2009.
(b) This AD revises AD 2008-09-24, Amendment 39-15505.
“Bombardier Aerospace has completed a system safety review of the aircraft fuel system against fuel tank safety standards introduced in Chapter 525 of the Airworthiness Manual through Notice of Proposed Amendment (NPA) 2002-043. The identified non-compliances were then assessed using Transport Canada Policy Letter No. 525-001, to determine if mandatory corrective action is required.”
“The assessment showed that it is necessary to introduce Critical Design Configuration Control Limitations (CDCCL), in order to preserve critical fuel tank system ignition source prevention features during configuration changes such as modifications and repairs, or during maintenance actions. Failure to preserve critical fuel tank system ignition source prevention features could result in a fuel tank explosion. Revisions have been made to Part 2 “Airworthiness Limitations Items” of the Maintenance Requirements Manual of the affected models to introduce the required CDCCL.”
The corrective action is revising the Airworthiness Limitations Section (ALS) of the Instructions for Continued Airworthiness to include the CDCCL data.
Restatement of Requirements of AD 2008-09-24, With Updated Service Information Actions and Compliance
(1) For all airplanes: Within 60 days after June 6, 2008 (the effective date of AD 2008-09-24), revise the ALS of the Instructions for Continued Airworthiness to incorporate the CDCCLs specified in Dash 8 Q400 (Bombardier) Temporary Revisions (TRs) ALI-55, dated April 19, 2006; ALI-56, dated April 19, 2006; and TR ALI-76, dated January 24, 2008; to Part 2, “Airworthiness Limitations Items,” of the Bombardier Dash 8 Q400 Maintenance Requirements Manual (MRM) PSM 1-84-7.
The actions required by paragraph (f)(1) of this AD may be done by inserting a copy of the applicable TRs into the maintenance requirements manual. When the TRs have been included in the general revision of the maintenance program, the general revision may be inserted into the maintenance requirements manual, provided the relevant information in the general revision is identical to that in the applicable TRs, and the TRs may be removed.
(2) After accomplishing the actions specified in paragraph (f)(1) of this AD, no alternative CDCCLs may be used unless the CDCCLs are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (g)(1) of this AD.
New Information Explanation of CDCCL Requirements Note 2:
Notwithstanding any other maintenance or operational requirements, components that have been identified as airworthy or installed on the affected airplanes before the revision of the ALS, as required by paragraph (f)(1) of this AD, do not need to be reworked in accordance with the CDCCLs. However, once the ALS has been revised, future maintenance actions on these components must be done in accordance with the CDCCLs.
FAA AD Differences Note 3:
(1)Alternative Methods of Compliance (AMOCs):The Manager, New York Aircraft Certification Office, ANE-170, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Program Manager, Continuing Operational Safety, FAA, New York ACO, 1600 Stewart Avenue, Suite 410, Westbury, New York, 11590; telephone 516-228-7300; fax 516-794-5531. Before using any approved AMOC on any airplane to which the AMOC applies, notify your principal maintenance inspector (PMI) or principal avionics inspector (PAI), as appropriate, or lacking a principal inspector, your local Flight Standards District Office. The AMOC approval letter must specifically reference this AD.
(2)Airworthy Product:For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAA-approved if they are approved by the State of Design Authority (or their delegated agent). You are required to ensure the product is airworthy before it is returned to service.
(h) Refer to MCAI Canadian Airworthiness Directive CF-2008-06, dated January 15, 2008, and the service information specified in Table 1 of this AD, for related information.
Table 1—Related Service Information Dash 8 Q400
(Bombardier) TR—
Dated— ALI-55 April 19, 2006. ALI-56 April 19, 2006. ALI-76 January 24, 2008. Material Incorporated by Reference
(i) You must use the service information specified in Table 2 of this AD, as applicable, to do the actions required by this AD, unless the AD specifies otherwise.
Table 2—Service Information Incorporated by Reference Dash 8 Q400 (Bombardier) TR— Dated— ALI-55 to Part 2, “Airworthiness Limitations Items,” of the Bombardier Dash 8 Q400 Maintenance Requirements Manual (MRM) PSM 1-84-7 April 19, 2006. ALI-56 to Part 2, “Airworthiness Limitations Items,” of the Bombardier Dash 8 Q400 Maintenance Requirements Manual (MRM) PSM 1-84-7 April 19, 2006. ALI-76 to Part 2, “Airworthiness Limitations Items,” of the Bombardier Dash 8 Q400 Maintenance Requirements Manual (MRM) PSM 1-84-7 January 24, 2008.
(1) The Director of the Federal Register approved the incorporation by reference of Dash 8 Q400 (Bombardier) TR ALI-76, dated January 24, 2008, under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) The Director of the Federal Register previously approved the incorporation by reference of Dash 8 Q400 (Bombardier) TR ALI-55, dated April 19, 2006; and Dash 8 Q400 (Bombardier) TR ALI-56, dated April 19, 2006; on June 6, 2008 (73 FR 24143, May 2, 2008).
(3) For service information identified in this AD, contact Bombardier, Inc., 400 Côte-Vertu Road West, Dorval, Québec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-7401; e-mailthd.qseries@aero.bombardier.com;Internethttp://www.bombardier.com.
Issued in Renton, Washington, on November 19, 2009. Stephen P. Boyd, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service.