Airworthiness Directive · Amendment 39-17283 · Fuselage
Bombardier, Inc. Airplanes
Superseded. A later AD replaced this one: AD 2019-08-04. Comply with the one in force.
(1) This AD applies to Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category, serial numbers 7003 and subsequent.
(2) 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)(1) of this AD. The request should include a description of changes to the required inspections that will ensure the continued damage tolerance of the affected structure. The FAA has provided guidance for this determination in FAA Advisory Circular (AC) 25.1529-1A, dated November 20, 2007 (http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/list/AC%2025.1529-1A/$FILE/AC%2025.1529-1A.pdf).
We are superseding an existing airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. That AD currently requires revising the airworthiness limitations section (AWL) of the Instructions for Continued Airworthiness (ICA) of the Canadair Regional Jet Maintenance Requirements Manual (MRM) by incorporating new procedures for repetitive detailed and special detailed inspections for cracking of the aft pressure bulkhead. This new AD requires revising the maintenance program to incorporate a revised task specified in a certain temporary revision, which requires an improved non-destructive inspection procedure; and adds airplanes to the applicability. This AD was prompted by multiple reports of cracks on the forward face of the rear pressure bulkhead (RPB) web. We are issuing this AD to detect and correct cracking in the RPB, which could result in reduced structural integrity and rapid decompression of the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
This paragraph restates the requirements of paragraph (f) of AD 2005-23-01, Amendment 39-14359 (70 FR 69073, November 14, 2005). For airplanes having serial numbers 7003 through 8025 inclusive, 8030, and 8034: Within 30 days after November 29, 2005 (the effective date of AD 2005-23-01), revise the AWL section of the Instructions for Continued Airworthiness of the Canadair Regional Jet Maintenance Requirements Manual (MRM), Part 2, Appendix B, “Airworthiness Limitations,” by incorporating the information specified in AWL 53-61-153 of the Canadair Regional Jet Temporary Revision (TR) 2B-2109, dated October 13, 2005, into the AWL section. Perform the applicable detailed and special detailed inspections for cracking of the aft pressure bulkhead, as specified in that TR, at the applicable compliance time specified in table 1 to paragraph (g) of this AD. Repeat the detailed inspection thereafter at intervals not to exceed 1,085 flight cycles, and repeat the special detailed inspection thereafter at intervals not to exceed 4,360 flight cycles, in accordance with the procedures specified in AWL 53-61-153, as introduced by Canadair Regional Jet TR 2B-2109, dated October 13, 2005, to Appendix B, “Airworthiness Limitations, of Part 2 of the Canadair Regional Jet MRM. Accomplishing the revision required by paragraph (i) of this AD terminates the requirements of this paragraph.
| As of November 29, 2005 (the effective date of AD 2005-23-01, Amendment 39-14359 (70 FR 69073, November 14, 2005)): If the total flight cycles accumulated on the airplane are— | Inspect before the airplane accumulates— |
|---|---|
| 8,000 or fewer | 12,000 total flight cycles. |
| More than 8,000 but fewer than 12,000 | 15,000 total flight cycles or within 4,000 flight cycles after November 29, 2005 (the effective date of AD 2005-23-01, Amendment 39-14359 (70 FR 69073, November 14, 2005)), whichever is first. |
| 12,000 or more but fewer than 15,000 | 17,000 total flight cycles or within 3,000 flight cycles after November 29, 2005 (the effective date of AD 2005-23-01 Amendment 39-14359 (70 FR 69073, November 14, 2005)), whichever is first. |
| 15,000 or more but fewer than 17,000 | 18,500 total flight cycles or within 2,000 flight cycles after November 29, 2005 (the effective date of AD 2005-23-01 Amendment 39-14359 (70 FR 69073, November 14, 2005)), whichever is first. |
| 17,000 or more but fewer than 18,500 | 19,500 total flight cycles or within 1,500 flight cycles after November 29, 2005 (the effective date of AD 2005-23-01, Amendment 39-14359 (70 FR 69073, November 14, 2005)), whichever is first. |
| 18,500 or more but fewer than 19,500 | 20,000 total flight cycles or within 1,000 flight cycles after November 29, 2005 (the effective date of AD 2005-23-01, Amendment 39-14359 (70 FR 69073, November 14, 2005)), whichever is first. |
| 19,500 or more | 500 flight cycles after November 29, 2005 (the effective date of AD 2005-23-01, Amendment 39-14359 (70 FR 69073, November 14, 2005)). |
This paragraph restates the requirements of paragraph (g) of AD 2005-23-01, Amendment 39-14359 (70 FR 69073, November 14, 2005). For airplanes having serial numbers 7003 through 8025 inclusive, 8030, and 8034: When the information in AWL 53-61-153 of the Canadair Regional Jet TR 2B-2109, dated October 13, 2005, to Appendix B, “Airworthiness Limitations,” of Part 2 of the Canadair Regional Jet MRM, is included in the general revisions of the MRM, the general revisions may be inserted into the AWL section of the Instructions for Continued Airworthiness, and this information may be removed from the MRM.
Within 60 days after the effective date of this AD: Revise the maintenance program by incorporating the revised inspection requirements specified in AWL 53-61-153 of Bombardier TR 2B-2187, dated June 22, 2011, to Appendix B—Airworthiness Limitations, of Part 2 of the Bombardier CL-600-2B19 MRM. The initial compliance times for the task are at the applicable time specified in paragraph (i)(1) or (i)(2) of this AD. Doing the revision required by paragraph (i) of this AD terminates the requirements of paragraph (g) of this AD.
(1) For airplanes on which the special detailed inspection specified in AWL 53-61-153 of Bombardier TR 2B-2187, dated June 22, 2011; or Canadair Regional Jet TR 2B-2109, dated October 13, 2005; has not been done as of the effective date of this AD: The initial compliance time for AWL 53-61-153 is at the applicable time specified in paragraph (i)(1)(i) or (i)(1)(ii) of this AD.
(i) For airplanes that have accumulated 10,500 total flight cycles or less as of the effective date of this AD: Before the accumulation of 12,000 total flight cycles.
(ii) For airplanes that have accumulated more than 10,500 total flight cycles as of the effective date of this AD: Within 1,500 flight cycles after the effective date of this AD.
(2) For airplanes on which the special detailed inspection specified in AWL 53-61-153 of Bombardier TR 2B-2187, dated June 22, 2011; or Canadair Regional Jet TR 2B-2109, dated October 13, 2005; has been done as of the effective date of this AD: The initial compliance time for AWL 53-61-153 is within 4,360 flight cycles after accomplishing the most recent special detailed inspection, or within 1,500 flight cycles after accomplishing the most recent detailed inspection as specified in AWL 53-61-153 of Canadair Regional Jet TR 2B-2109, dated October 13, 2005, whichever occurs later.
After accomplishing the revisions required by paragraph (i) of this AD, no alternative actions (e.g., inspections) or intervals may be used other than those specified in Bombardier TR 2B-2187, dated June 22, 2011, to Appendix B—Airworthiness Limitations, of Part 2 of the Bombardier CL-600-2B19 MRM, unless the actions and intervals are approved as an AMOC in accordance with the procedures specified in paragraph (l)(1) of this AD.
The maintenance program revision required by paragraph (i) of this AD may be done by inserting a copy of Bombardier TR 2B-2187, dated June 22, 2011, into Appendix B—Airworthiness Limitations, of Part 2 of the Bombardier CL-600-2B19 MRM. When this TR has been included in general revisions of the MRM, the general revisions may be inserted in the MRM, provided the relevant information in the general revision is identical to that in this TR.
