Airworthiness Directive · Amendment 39-16977 · Equipment/furnishings
Bombardier, Inc. Airplanes
This AD applies to Bombardier, Inc. Model CL-215-1A10 airplanes, serial numbers 1051 through 1125 inclusive; Model CL-215-6B11 (CL-215T Variant) airplanes, serial numbers 1056 through 1125 inclusive; and Model CL-215-6B11 (CL-415 Variant) airplanes; serial numbers 2001 through 2085 inclusive; certificated in any category.
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-215-1A10, CL-215-6B11 (CL-215T Variant), and CL-215-6B11 (CL-415 Variant) airplanes. This AD was prompted by reports of cracked or broken support bracket assemblies of the emergency water dump pulley. This AD requires inspecting the bracket assembly of the emergency water dump pulley to determine if certain rivets are installed; replacing rivets and installing new stiffeners on the bracket assembly, if necessary; inspecting the stiffeners for the bracket assembly for cracks, deformation, or corrosion, and replacement if necessary; and re-installing the bracket assembly with radius packers. We are issuing this AD to detect and correct failure of the support bracket assembly of the emergency water dump pulley, and in combination with other system failures, such as an engine failure during take off or a pitch control system jam, may result in loss of controllability 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.
Within 50 flight cycles or 30 days after the effective date of this AD, whichever occurs first, do a general visual inspection to determine if either universal solid (round head) rivets or flush rivets of the bracket assembly of the emergency water dump pulley are installed, in accordance with the Accomplishment Instruction of Bombardier Alert Service Bulletin 215-A543, Revision 1, dated June 23, 2010 (for Model CL-215-1A10 and CL-215-6B11 (CL-215T Variant) airplanes); or Bombardier Alert Service Bulletin 215-A4424, Revision 2, dated June 23, 2010 (for Model CL-215-6B11 (CL-415 Variant) airplanes).
If, during the inspection required by paragraph (g) of this AD, universal solid rivets are determined to be installed: Within 50 flight cycles or 30 days after the effective date of this AD, whichever occurs first, replace the solid rivets with flush rivets, and install new stiffeners on the bracket assembly of the emergency water dump pulley, in accordance with the Accomplishment Instructions of Bombardier Alert Service Bulletin 215-A543, Revision 1, dated June 23, 2010 (for Model CL-215-1A10 and CL-215-6B11 (CL-215T Variant) airplanes); or Bombardier Alert Service Bulletin 215-A4424, Revision 2, dated June 23, 2010 (for Model CL-215-6B11 (CL-415 Variant) airplanes).
If, during the inspection required by paragraph (g) of this AD, flush rivets are determined to be installed; and for airplanes on which flush rivets are installed in accordance with paragraph (h) of this AD: Within 100 flight cycles or 60 days after the effective date of this AD, whichever occurs first, do a detailed inspection of the stiffeners for cracks, deformation, and signs of corrosion, in accordance with the Accomplishment Instructions of Bombardier Alert Service Bulletin 215-A543, Revision 1, dated June 23, 2010 (for Model CL-215-1A10 and CL-215-6B11 (CL-215T Variant) airplanes); or Bombardier Alert Service Bulletin 215-A4424, Revision 2, dated June 23, 2010 (for Model CL-215-6B11 (CL-415 Variant) airplanes). Thereafter, at intervals not to exceed 100 flight cycles, repeat the detailed inspections of the stiffeners. If any crack, deformation, or signs of corrosion are found, before further flight, replace the stiffeners with new stiffeners, in accordance with the Accomplishment Instructions of Bombardier Alert Service Bulletin 215-A543, Revision 1, dated June 23, 2010 (for Model CL-215-1A10 and CL-215-6B11 (CL-215T Variant) airplanes); or Bombardier Alert Service Bulletin 215-A4424, Revision 2, dated June 23, 2010 (for Model CL-215-6B11 (CL-415 Variant) airplanes).
Within 100 flight cycles or 60 days after the effective date of this AD, whichever occurs first, do the actions specified in paragraphs (j)(1) and (j)(2) of this AD. Installation of the radius packers terminates the repetitive detailed inspections of the support bracket assembly of the emergency water dump pulley required by paragraph (i) of this AD.
(1) Do a liquid penetrant inspection of the stiffeners having P/N 215-94711-6 and P/N 215-94711-8 for cracks, deformation, or signs of corrosion, in accordance with the Accomplishment Instructions of Bombardier Alert Service Bulletin 215-A543, Revision 1, dated June 23, 2010 (for Model CL-215-1A10 and CL-215-6B11 (CL-215T Variant) airplanes); or Bombardier Alert Service Bulletin 215-A4424, Revision 2, dated June 23, 2010 (for Model CL-215-6B11 (CL-415 Variant) airplanes). If any crack, deformation, or sign of corrosion is found, before further flight, replace damaged stiffeners with new stiffeners, in accordance with the Accomplishment Instructions of Bombardier Alert Service Bulletin 215-A543, Revision 1, dated June 23, 2010 (for Model CL-215-1A10 and CL-215-6B11 (CL-215T Variant) airplanes); or Bombardier Alert Service Bulletin 215-A4424, Revision 2, dated June 23, 2010 (for Model CL-215-6B11 (CL-415 Variant) airplanes).
(2) Re-install the bracket assembly of the emergency water dump pulley using radius packers, in accordance with the Accomplishment Instructions of Bombardier Alert Service Bulletin 215-A543, Revision 1, dated June 23, 2010 (for Model CL-215-1A10 and CL-215-6B11 (CL-215T Variant) airplanes); or Bombardier Alert Service Bulletin 215-A4424, Revision 2, dated June 23, 2010 (for Model CL-215-6B11 (CL-415 Variant) airplanes).
This paragraph provides credit for the actions required by paragraphs (g), (h), (i), and (j) of this AD, if the actions were performed before the effective date of this AD using the service information specified in paragraphs (k)(1), (k)(2), and (k)(3) of this AD.
(1) Bombardier Service Bulletin 215-4424, dated January 25, 2010.
(2) Bombardier Alert Service Bulletin 215-A4424, Revision 1, dated May 18, 2010.
(3) Bombardier Alert Service Bulletin 215-A543, dated May 19, 2010.
