Airworthiness directives › 2020-02-19
AD 2020-02-19 Airworthiness Directives; Bombardier, Inc., Airplanes
Applicability*9
This AD applies to Bombardier, Inc., Model CL-600-2B19 (Regional Jet series 100 & 440) airplanes, certificated in any category, serial numbers 7003 through 8999 inclusive.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
For airplane serial numbers 7003 through 8079 inclusive: Within 30 days from the effective date this AD, revise the existing maintenance or inspection program, as applicable, by incorporating the information specified in Airworthiness Limitations (AWL) task number 53-41-149 specified in Bombardier CL-600-2B19 Airworthiness Requirements Temporary Revision 2B-2265, dated July 19, 2018, to Appendix B—Airworthiness Limitations, of Part 2 of the Bombardier Maintenance Requirements Manual. (1) The initial compliance time for doing the task is at the time specified in figure 1 to paragraph (g)(1) of this AD, or within 90 days after the effective date of this AD, whichever occurs later. ER26FE20.010 (2) For airplanes on which Bombardier Service Bulletin 601R-53-067, Bombardier Service Bulletin 601R-53-077, and AWL task number 53-41-194 have been done, the inspections in AWL task number 53-41-149 are not required in the areas covered by doublers at FS460 and FS513. (3) For airplanes on which the initial inspection has been accomplished at 18,325 or more total flight cycles, and no cracks were found, as of October 7, 2003 (the effective date of AD 2003-09-04), the repetitive interval of 10,000 flight cycles starts from the completion date of the initial inspection. (4) For airplanes that were previously inspected using AWL task number 53-41-193, perform an inspection using the information specified in AWL task number 53-41-149, provided in Bombardier CL-600-2B19 Airworthiness Requirements Temporary Revision 2B-2265, dated July 19, 2018, to Appendix B—Airworthiness Limitations, of Part 2 of the Bombardier Maintenance Requirements Manual, within 10,000 flight cycles from the previously accomplished inspection.
Unsafe condition
This AD was prompted by a report of fatigue cracks occurring on the pressure floor skin at fuselage stations (FS) 460 and 513. The FAA is issuing this AD to address such fatigue cracks, which could result in failure of the pressure floor skin and consequent rapid decompression of the airplane during flight.
Affected ADs
This AD replaces AD 2003-09-04 R1, Amendment 39-13305 (68 FR 54985, September 22, 2003) (“AD 2003-09-04 R1”).
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1