Airworthiness Directive · Amendment 39-19922 · Wings
Bombardier, Inc., Airplanes
This AD applies to Bombardier, Inc., Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category, serial number 7003 and subsequent.
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This AD was prompted by reports that during airplane wing fatigue testing, fatigue cracks were found on the lower right- hand-side wing plank at the end of the integrally machined stringers, which led to a determination that new or more restrictive airworthiness limitations are necessary. This AD requires, for certain airplanes, revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA is issuing this AD to address the unsafe condition on these products.
For airplanes on which Bombardier Service Bulletin 601R-57-044 has not been done: Within 30 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to incorporate the information in airworthiness limitations (AWL) task 57-21-112, as specified in Part 6—Eddy Current, of Bombardier Canadair Regional Jet CRJ200 Nondestructive Testing Manual, CSP A-010, Revision 40, dated November 10, 2018. The initial compliance time for doing the task is at the next scheduled inspection as specified in AWL task 57-21-112, or within 30 days after the effective date of this AD, whichever occurs later.
For airplanes on which Bombardier Service Bulletin 601R-57-044 has been done: Within 30 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to incorporate the information in AWL task 57-21-169, as specified in Bombardier CL-600-2B19 Temporary Revision 2B-2273, dated October 31, 2019, to Appendix B—Airworthiness Limitations, of Part 2 of the Bombardier CL-600-2B19 Maintenance Requirements Manual. The initial compliance time for doing the task is at the time specified in Bombardier CL-600-2B19 Temporary Revision 2B-2273, dated October 31, 2019, to Appendix B—Airworthiness Limitations, of Part 2 of the Bombardier CL-600-2B19 Maintenance Requirements Manual, or within 30 days after the effective date of this AD, whichever occurs later.
After the existing maintenance or inspection program has been revised as required by paragraphs (g) and (h) of this AD, no alternative actions (e.g., inspections) or intervals may be used unless the actions or intervals are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (k)(1) of this AD.
Accomplishing the revision required by paragraph (g) of this AD terminates the requirement to incorporate AWL 57-21-112 as specified in paragraph (g)(12) of AD 2016-17-15.
