2010-20-17 Bombardier, Inc.: Amendment 39-16452. Docket No. FAA- 2010-0276; Directorate Identifier 2009-NM-144-AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective November 9, 2010.
Affected ADs
(b) This AD supersedes AD 2004-22-08, Amendment 39-13836.
Applicability
(c) This AD applies to all Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, serial numbers 7003 and subsequent, certificated in any category.
Note 1: 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 (l) 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.
Subject
(d) Air Transport Association (ATA) of America Code 21: Air conditioning.
Reason
(e) The mandatory continuing airworthiness information (MCAI) states:
Three cases of in-flight loss of cabin pressurization have been reported, resulting from failure of a bulkhead check valve in combination with failure of an air supply duct.
In addition to mandating inspection, rework and/or replacement of the air supply ducts, Airworthiness Directive (AD) CF-2003-05 (subsequently revised to CF-2003-05R1) [which corresponds to FAA AD 2004-22-08] mandated the incorporation of a 4 000 flight-hour repetitive inspection task for bulkhead check valves, Part Numbers (P/N) 92E20-3 and 92E20-4, into the approved maintenance schedule. However, this repetitive inspection task has since been supersededby a 3000 flight-hour periodic discard task for these bulkhead check valves.
This directive mandates revision of the approved maintenance schedule to incorporate the discard task for bulkhead check valves, P/N 92E20-3 and 92E20-4, and supersedes the instructions in Corrective Actions, Part A, of AD CF-2003-05R1, dated 7 February 2006.
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.
Restatement of Requirements of AD 2004-22-08, Amendment 39-13836:
Service Information Clarifications
(g) Paragraphs (g)(1), (g)(2), and (g)(3) of this AD pertain to the service information referenced in this AD.
(1) Although Bombardier Alert Service Bulletin A601R-21-053, Revision `A,' dated January 28, 2003; and Bombardier Alert Service Bulletin A601R-21-054, dated November 8, 2001; specify to submit certain information to the manufacturer, this AD does not include such a requirement.
(2) Bombardier Alert Service Bulletin A601R-21-054, dated November 8, 2001, recommends sending all damaged check valves to the manufacturer for analysis; however, this AD does not include that requirement.
(3) Accomplishment of the actions specified in Bombardier Alert Service Bulletin A601R-21-053, dated November 8, 2001, before December 2, 2004 (the effective date of AD 2004-22-08), is considered acceptable for compliance with the applicable actions specified in this AD.
Repetitive Inspections/Related Corrective Actions
(h) Within 500 flight hours after December 2, 2004: Do the detailed inspections and related corrective actions required by paragraphs (h)(1) and (h)(2) of this AD, per the Accomplishment Instructions of Bombardier Alert Service Bulletin A601R-21-053, Revision `A,' dated January 28, 2003; and Bombardier Alert Service Bulletin A601R-21-054, dated November 8, 2001; as applicable.
(1) For airplanes having bulkhead check valves with part number (P/N) 92E20-3/-4, as identified in Bombardier Alert Service Bulletin A601R-21-054, dated November 8, 2001: Inspect the left- and right- hand bulkhead check valves for damage (cracking, breakage). If any damage is found, before further flight, replace the damaged valve. Repeat the inspection at intervals not to exceed 4,000 flight hours until the replacement required by paragraph (j) of this AD is done.
(2) For airplanes having serial numbers 7003 through 7067 inclusive, and 7069 through 7477 inclusive: Inspect the left- and right-hand air supply ducts of the rear bulkhead for damage (tearing, delamination, or cracking). If any damage is found, before further flight, either rework or replace the damaged air supply duct, which ends the inspections for that air supply duct only. If no damage is found, repeat the inspection thereafter at intervals not to exceed 500 flight hours until accomplishment of paragraph (i) of this AD.
Note 2: For the purposes ofthis AD, a detailed inspection is defined as: "An intensive visual examination of a specific structural area, system, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at intensity deemed appropriate by the inspector. Inspection aids such as mirror, magnifying lenses, etc., may be used. Surface cleaning and elaborate access procedures may be required.''
Terminating Action for Repetitive Inspections of Air Supply Ducts
(i) Except as required by paragraph (h)(2) of this AD, for airplanes having serial numbers 7003 through 7067 inclusive, and 7069 through 7477 inclusive: Within 5,000 flight hours after December 2, 2004, either rework or replace the left- and right-hand air ducts, as applicable, per the Accomplishment Instructions of Bombardier Alert Service Bulletin A601R-21-053, Revision `A,' dated January 28, 2003; and Bombardier Alert Service Bulletin A601R-21- 054, dated November 8, 2001; as applicable. Accomplishment of this paragraph ends the repetitive inspections required by paragraph (h)(2) of this AD.
New Requirements of This AD:
Actions and Compliance
(j) For airplanes having serial numbers 7003 and subsequent: Within 60 days after the effective date of this AD, revise the Airworthiness Limitations section of the Instructions for Continued Airworthiness to include the information in Bombardier Temporary Revision (TR) 1-2-39, dated December 12, 2008, to Section 2--Systems and Powerplant Program, of Part 1 of the Bombardier CL-600-2B19 Maintenance Requirement Manual (MRM). This task requires replacement of the bulkhead check valves having P/N 92E20-3 or 92E20-4 at intervals not to exceed 3,000 flight hours. Operate the airplane thereafter according to the limitations and procedures in the TR.
(k) Thereafter, except as provided in paragraph (j) of this AD, no alternative replacement times or structural inspection intervals may be approved for this bulkhead check valve.
Note 3: The actions required by paragraph (j) of this AD may be done by inserting a copy of Bombardier TR 1-2-39, dated December 12, 2008, into the MRM, which introduces Task 21-51-21-13. When Bombardier Task 21-51-21-13 has been included in general revisions of the MRM, the general revisions may be inserted into Part 2 of the Airworthiness Limitations section of the MRM, provided the relevant information in the general revision is identical to that in the TR.
FAA AD Differences
Note 4: This AD differs from the MCAI and/or service information as follows: No differences.
Other FAA AD Provisions
(l) 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. 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. Two AMOCs approved previously in accordance with AD 2004-22-08, Amendment 39-13836, are approved as AMOCs for the corresponding provisions of this AD. These two approved AMOCs are identified in paragraphs (l)(1)(i) and (l)(1)(ii) of this AD. All other AMOCs approved previously in accordance with AD 2004-22-08, Amendment 39-13836, are not approved as AMOCs with this AD.
(i) An AMOC approved by the New York ACO on November 17, 2004, in response to Comair AMOC request memo, dated November 10, 2004.
(ii) An AMOC approved by the NewYork ACO on October 13, 2006, in response to Comair AMOC request memo, dated September 19, 2006.
(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
(m) Refer to MCAI Canadian Airworthiness Directive CF-2009-31, dated July 8, 2009; and the service information specified in Table 1 of this AD for related information.
Table 1--Related Information
Document
Revision
Date
Bombardier TR 1-2-39 to Section 2 Systems and Powerplant Program, of Part 1 of the Bombardier CL-600-2B19 MRM
Original
December 12, 2008
Bombardier Alert Service Bulletin A601R-21-053
A
January 28, 2003
Bombardier Alert Service Bulletin A601R-21-054
Original
November 8, 2001
Material Incorporated by Reference
(n) 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--Material Incorporated by Reference
Document
Revision
Date
Bombardier Temporary Revision (TR) 1-2-39 to Section 2 Systems and Powerplant Program, of Part 1 of the Bombardier CL-600-2B19 Maintenance Requirement Manual (MRM)
Original
December 12, 2008
Bombardier Alert Service Bulletin A601R-21-053
A
January 28, 2003
Bombardier Alert Service Bulletin A601R-21-054
Original
November 8, 2001
(1) The Director of the Federal Register approved the incorporation by reference of Bombardier TR 1-2-39, dated December 12, 2008, to Section 2--Systems and Powerplant Program, of Part 1 of the Bombardier CL-600-2B19 MRM, 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 Bombardier Alert Service Bulletin A601R-21-053, Revision `A,' dated January 28, 2003; and Bombardier Alert Service Bulletin A601R-21-054, dated November 8, 2001; on December 2, 2004 (69 FR 62807, October 28, 2004).
(3) For service information identified in this AD, contact Bombardier, Inc., 400 C te-Vertu Road West, Dorval, Qu bec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855- 7401; e-mail thd.crj@aero.bombardier.com; Internet http://www.bombardier.com.
(4) You may review copies of the 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.
(5) You may also review copies of the service information that is incorporated by reference 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: http:// www.archives.gov/federal_register/code_of_federal_regulations/ ibr_locations.html.