Airworthiness Directive · Amendment 39-17861 · Flight controls
Bombardier, Inc. Airplanes
This AD applies to Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category, serial numbers (S/Ns) 7003 through 8110 inclusive.
We are superseding Airworthiness Directive (AD) 2008-08-09 for certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. AD 2008-08-09 required revising the airworthiness limitations (AWL) section of the Instructions for Continued Airworthiness by incorporating procedures for repetitive functional tests of the pilot input lever of the pitch feel simulator (PFS) units and corrective actions if necessary. This new AD requires replacing certain PFS units with new redesigned PFS units, which would terminate the repetitive functional tests; and both adding and removing certain airplanes from the applicability. This AD was prompted by reports that the shear pin in the input lever of several PFS units failed due to fatigue; and by the development of a re-designed PFS unit, which eliminates the need for repetitive functional tests. We are issuing this AD to prevent undetected failure of the shear pins of both PFS units simultaneously, which could result in loss of pitch feel forces and consequent reduced control of the airplane.
This paragraph restates the requirements of paragraph (g) of AD 2008-08-09, Amendment 39-15461 (73 FR 19979, April 14, 2008), with revised service information. For airplanes having S/Ns 7003 through 7990 inclusive, and S/Ns 8000 through 8110 inclusive: Before the accumulation of 4,000 total flight hours, or within 100 flight hours after March 27, 2006 (the effective date of AD 2006-05-11 R1, Amendment 39-14528 (71 FR 15323, March 28, 2006), whichever occurs later, do a functional test of the pilot input lever of the PFS units to determine if the lever is disconnected, in accordance with the Accomplishment Instructions of a service bulletin specified in paragraph (g)(1), (g)(2), or (g)(3) of this AD. Repeat the test at intervals not to exceed 100 flight hours. As of the effective date of this AD, only Bombardier Alert Service Bulletin A601R-27-144, Revision E, dated October 2, 2012, including Appendix A, Revision A, dated December 20, 2006, may be used to accomplish the actions required by this paragraph.
(1) Bombardier Alert Service Bulletin A601R-27-144, Revision A, dated February 14, 2006, including Appendix A, dated September 15, 2005.
(2) Bombardier Alert Service Bulletin A601R-27-144, Revision B, dated December 20, 2006, including Appendix A, Revision A, dated December 20, 2006.
(3) Bombardier Alert Service Bulletin A601R-27-144, Revision E, dated October 2, 2012, including Appendix A, Revision A, dated December 20, 2006.
This paragraph restates the requirements of paragraph (h) of AD 2008-08-09, Amendment 39-15461 (73 FR 19979, April 14, 2008), with revised service information. If any lever is found to be disconnected during any functional test required by paragraph (g) of this AD: Before further flight, replace the defective PFS unit with a serviceable PFS unit, in accordance with the Accomplishment Instructions of a service bulletin specified in paragraph (h)(1), (h)(2), or (h)(3) of this AD. As of the effective date of this AD, only Bombardier Alert Service Bulletin A601R-27-144, Revision E, dated October 2, 2012, including Appendix A, Revision A, dated December 20, 2006, may be used to accomplish the actions required by this paragraph.
(1) Bombardier Alert Service Bulletin A601R-27-144, Revision A, dated February 14, 2006, including Appendix A, dated September 15, 2005.
(2) Bombardier Alert Service Bulletin A601R-27-144, Revision B, dated December 20, 2006, including Appendix A, Revision A, dated December 20, 2006.
(3) Bombardier Alert Service Bulletin A601R-27-144, Revision E, dated October 2, 2012, including Appendix A, Revision A, dated December 20, 2006.
For airplanes having S/Ns 7991 through 7999 inclusive: At the later of the times specified in paragraphs (i)(1) and (i)(2) of this AD, do a functional test of the pilot input lever of the PFS units to determine if the lever is defective, in accordance with the Accomplishment Instructions of Bombardier Alert Service Bulletin A601R-27-144, Revision E, dated October 2, 2012, including Appendix A, Revision A, dated December 20, 2006. Repeat the test thereafter at intervals not to exceed 100 flight hours.
(1) Before the accumulation of 4,000 total flight hours.
(2) Within 100 flight hours from the effective date of this AD.
For airplanes having S/Ns 7991 through 7999 inclusive: If any defective lever is found during any functional test required by paragraph (i) of this AD, before further flight, replace the defective PFS unit with a serviceable PFS unit, in accordance with the Accomplishment Instructions of Bombardier Alert Service Bulletin A601R-27-144, Revision E, dated October 2, 2012, including Appendix A, Revision A, dated December 20, 2006.
At the applicable time specified in paragraph (k)(1), (k)(2), (k)(3), or (k)(4) of this AD: Replace PFS units having part number (P/N) 601R92300-3 (vendor P/N TY1910-50A) or 601R92300-5 (vendor P/N TY1910-51A), with PFS units having P/N 601R92300-7 (vendor P/N TY1910-54A), in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 601R-27-139, Revision A, dated May 28, 2012. Accomplishment of the replacement required by this paragraph terminates the requirements of paragraphs (g), (h), (i), and (j) of this AD, and does not alter the approved maintenance program for the new redesigned PFS unit P/N 601R92300-7 (vendor P/N TY1910-54A).
(1) For PFS units having P/N 601R92300-3 (vendor P/N TY1910-50A) or 601R92300-5 (vendor P/N TY1910-51A), that have accumulated less than 18,000 total flight hours as of the effective date of this AD: Within 6,000 flight hours after the effective date of this AD, but not to exceed 23,000 total flight hours on the PFS unit, or within 36 months after the effective date of this AD, whichever occurs first.
(2) For PFS units having P/N 601R92300-3 (vendor P/N TY1910-50A) or 601R92300-5 (vendor P/N TY1910-51A), that have accumulated more than or equal to 18,000 total flight hours, but less than 19,000 total flight hours as of the effective date of this AD: Within 5,000 flight hours after the effective date of this AD, but not to exceed 23,000 total flight hours on the PFS unit, or within 30 months after the effective date of this AD, whichever occurs first.
(3) For PFS units having P/N 601R92300-3 (vendor P/N TY1910-50A) or 601R92300-5 (vendor P/N TY1910-51A), that have accumulated more than or equal to 19,000 total flight hours, but less than 20,000 total flight hours as of the effective date of this AD: Within 4,000 flight hours after the effective date of this AD, but not to exceed 23,000 total flight hours on the PFS unit, or within 24 months after the effective date of this AD, whichever occurs first.
(4) For PFS units having P/N 601R92300-3 (vendor P/N TY1910-50A) or 601R92300-5 (vendor P/N TY1910-51A) that have accumulated more than or equal to 20,000 total flight hours as of the effective date of this AD, or for which the total flight hours are unknown or cannot be determined: Within 3,000 flight hours or 18 months after the effective date of this AD, whichever occurs first.
