Airworthiness Directive · Amendment 39-18043 · Stabilizers
Bombardier, Inc. Airplanes
This AD applies to Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category, equipped with horizontal stabilizer trim actuator (HSTA) part number (P/N) 601R92305-7 (vendor P/N 8396-5).
We are 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 issuance of revised certification maintenance requirements for the horizontal stabilizer trim actuator (HSTA). This AD requires revising the maintenance or inspection program. We are issuing this AD to detect and correct premature wear and cracking of the HSTAs, which could result in reduced structural integrity and reduced control of the airplane due to the failure of system components.
Within 30 days after the effective date of this AD, revise the maintenance or inspection program, as applicable, to incorporate the information specified in Task C27-40-103-05, “Restoration (Overhaul) of the HSTA,” of Bombardier Temporary Revision (TR) 2A-58, dated January 31, 2014, into Appendix A—Certification Maintenance Requirements (CMR), of Part 2, of the Bombardier CL-600-2B19 Maintenance Requirements Manual (MRM). The initial compliance time for accomplishing Task C27-40-103-05, “Restoration (Overhaul) of the HSTA,” of Bombardier Temporary Revision (TR) 2A-58, dated January 31, 2014, is at the applicable phase-in time specified in Bombardier TR 2A-58, dated January 31, 2014, or within 30 days after the effective date of this AD, whichever occurs later. The revision required by paragraph (g) of this AD may be done by inserting a copy of Bombardier TR 2A-58, dated January 31, 2014, into Appendix A—CMR, of Part 2 of the Bombardier CL-600-2B19 MRM. When Bombardier TR 2A-58, dated January 31, 2014, has been included in the general revisions of the Bombardier CL-600-2B19 MRM, the general revisions may be inserted into the MRM, provided the relevant information in the general revision is identical to that in Bombardier TR 2A-58, dated January 31, 2014.
After accomplishing the revision required by paragraph (g) 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 (i)(1) of this AD.
