Source: https://www.federalregister.gov/documents/2008/01/04/E7-25617/airworthiness-directives-bombardier-model-cl-600-2b19-regional-jet-series-100-and-440-airplanes
Timestamp: 2017-08-21 09:08:54
Document Index: 688266643

Matched Legal Cases: ['art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2']

A Proposed Rule by the Federal Aviation Administration on 01/04/2008
We must receive comments on this proposed AD by February 4, 2008.
73 FR 833
833-836 (4 pages)
Docket No. FAA-2008-0413
Directorate Identifier 2007-NM-341-AD
E7-25617
https://www.federalregister.gov/d/E7-25617 https://www.federalregister.gov/d/E7-25617
[A]ssessment showed that supplemental maintenance tasks [for certain bonding jumpers, wiring harnesses, and hydraulic systems, among other items] are required to prevent potential ignition sources inside the fuel system, which could result in a fuel tank explosion. * * *
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-2008-0413; Directorate Identifier 2007-NM-341-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.
Transport Canada Civil Aviation (TCCA), which is the aviation authority for Canada, has issued Canadian Airworthiness Directive CF-2007-29, dated November 22, 2007 (referred to after this as “the MCAI”), to correct an unsafe condition for the specified products. The MCAI states:
The assessment showed that supplemental maintenance tasks [for certain bonding jumpers, wiring harnesses, and hydraulic systems, among other items] are required to prevent potential ignition sources inside the fuel system, which could result in a fuel tank explosion. Revision has been made to Canadair Regional Jet Model CL-600-2B19 Start Printed Page 834Maintenance Requirements Manual, CSP A-053, Part 2, Appendix D, “Fuel System Limitations” to introduce the required maintenance tasks.
Bombardier has issued a revision to Canadair Regional Jet Model CL-600-2B19, Airworthiness Requirements in the Maintenance Requirements Manual, CSP A-053, Part 2, Appendix D, “Fuel System Limitations,” Revision 7, dated May 10, 2007. The actions described in this service information are intended to correct the unsafe condition identified in the MCAI.
This proposed AD would also allow accomplishing the AWL revision in accordance with later revisions of the MPD as an acceptable method of compliance if the limit or interval is part of a later approved Maintenance Requirements Manual revision or the limit or interval is approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (g) of this proposed AD.
Based on the service information, we estimate that this proposed AD would affect about 689 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 $80 per work-hour. Based on these figures, we estimate the cost of the proposed AD on U.S. operators to be $55,120, or $80 per product.
2. Is not a “significant rule” under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and Start Printed Page 835
Bombardier, Inc. (Formerly Canadair): Docket No. FAA-2008-0413; Directorate Identifier 2007-NM-341-AD.
(a) We must receive comments by February 4, 2008.
(c) This AD applies to all Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category, all serial numbers.
This AD requires revisions to certain operator maintenance documents to include new inspections. Compliance with these inspections is required by 14 CFR 91.403(c). For airplanes that have been previously modified, altered, or repaired in the areas addressed by these inspections, the operator may not be able to accomplish the inspections described in the revisions. In this situation, to comply with 14 CFR 91.403(c), the operator must request approval for an alternative method of compliance according to paragraph (g) of this AD. The request should include a description of changes to the required inspections that will ensure the continued operational safety of the airplane. The FAA has provided guidance for this determination in Advisory Circular (AC) 25-1529-1.
The assessment showed that supplemental maintenance tasks [for certain bonding jumpers, wiring harnesses, and hydraulic systems, among other items] are required to prevent potential ignition sources inside the fuel system, which could result in a fuel tank explosion. Revision has been made to Canadair Regional Jet Model CL-600-2B19 Maintenance Requirements Manual, CSP A-053, Part 2, Appendix D, “Fuel System Limitations” to introduce the required maintenance tasks.
The corrective action is revising the Airworthiness Limitations Section of the Instructions for Continued Airworthiness to incorporate new limitations for fuel tank systems.
(1) Within 60 days after the effective date of this AD, or on or before December 16, 2008, whichever occurs first, revise the Airworthiness Limitations Section (ALS) of the Instructions for Continued Airworthiness to incorporate the inspection and maintenance requirements, as applicable, Canadair Regional Jet Model CL-600-2B19 Airworthiness Requirements in the Maintenance Requirements Manual, CSP A-053, Part 2, Appendix D, “Fuel System Limitations,” Revision 7, dated May 10, 2007 (“the MRM”), task numbers 28-11-00-601, 28-11-00-602, 28-11-00-603, 28-11-00-604, 29-33-01-601, and 29-33-01-602. For those task numbers, the initial compliance times start from the later of the times specified in paragraphs (f)(1)(i) and (f)(1)(ii) of this AD, and the repetitive inspections must be accomplished thereafter at the interval specified in the MRM, except as provided by paragraphs (f)(2), (f)(3), (f)(4), and (g) of this AD. Accomplishing the revision in accordance with a later revision of the MRM is an acceptable method of compliance if the revision is approved by the Manager, New York Aircraft Certification Office (ACO), FAA.
(i) The effective date of this AD.
(ii) The date of issuance of the original Canadian standard airworthiness certificate or the date of issuance of the original Canadian export certificate of airworthiness.
(2) For airplanes having more than 15,000 flight hours as of the effective date of this AD, the initial compliance time for Tasks 28-11-00-601, 28-11-00-602, 28-11-00-603, and 28-11-00-604 is within 5,000 flight hours after the effective date of this AD. Thereafter, these tasks must be accomplished within the repetitive interval specified in Canadair Regional Jet Model CL-600-2B19, Airworthiness Requirements in the Maintenance Requirements Manual, CSP A-053, Part 2, Appendix D, “Fuel System Limitations,” Revision 7, dated May 10, 2007.
(3) For Task 29-33-01-601, the initial compliance time is within 5,000 flight hours after the effective date of this AD. Thereafter, task 29-33-01-601 must be accomplished within the repetitive interval specified in Canadair Regional Jet Model CL-600-2B19, Airworthiness Requirements in the Maintenance Requirements Manual, CSP A-053, Part 2, Appendix D, “Fuel System Limitations,” Revision 7, dated May 10, 2007.
(4) For airplanes having more than 27,500 flight hours as of the effective date of this AD, the initial compliance time for Task 29-33-01-602 is within 2,500 flight hours after the effective date of this AD. Thereafter, this task must be accomplished within the repetitive interval specified in Canadair Regional Jet Model CL-600-2B19, Airworthiness Requirements in the Maintenance Requirements Manual, CSP A-053, Part 2, Appendix D, “Fuel System Limitations,” Revision 7, dated May 10, 2007.
(5) Except as provided by paragraph (g) of this AD: After accomplishing the actions specified in paragraphs (f)(1), (f)(2), (f)(3), and (f)(4) of this AD, no alternative inspections or inspection intervals may be used unless the limit or interval is part of a later approved revision of Canadair Regional Jet Model CL-600-2B19, Airworthiness Requirements in the Maintenance Requirements Manual, CSP A-053, Part 2, Appendix D, “Fuel System Limitations,” Revision 7, dated May 10, 2007, or the limit or interval is approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (g) of this AD.
(1) Alternative Methods of Compliance (AMOCs): The Manager, New York Aircraft Certification Office (ACO), 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: Rocco Viselli, Aerospace Engineer, Airframe and Propulsion Branch, ANE-171, FAA, New York Aircraft Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New York 11590; telephone (516) 228-7331; fax (516) 794-5531. 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. Start Printed Page 836
(h) Refer to MCAI Canadian Airworthiness Directive CF-2007-29, dated November 22, 2007, and Canadair Regional Jet Model CL-600-2B19, Airworthiness Requirements in the Maintenance Requirements Manual, CSP A-053, Part 2, Appendix D, “Fuel System Limitations,” Revision 7, dated May 10, 2007.
Issued in Renton, Washington, on December 26, 2007.
[FR Doc. E7-25617 Filed 1-3-08; 8:45 am]