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Attention Challenger 604 and 604 Variant Operators: AD2024-03-06

Challenger 604
Challenger 604

The FAA is superseding Airworthiness Directive (AD) 2021–20–13, which applied to certain Bombardier, Inc., Model CL–600–2B16 (604 Variant) airplanes.

AD 2021–20–13 required repetitive lubrication and repetitive detailed visual inspections (DVI) and non-destructive test (NDT) inspections of the main landing gear (MLG) shock strut lower pins and replacement if necessary.

The new AD2024-03-06  continues to require the lubrication and inspections specified in AD 2021–20–13 until the MLG shock strut assembly is modified by replacing the trailing arm bushing and installing new dynamic joint components. This AD was prompted by a new design solution for this potential failure of the shock strut lower pin. The FAA is issuing this AD to address the unsafe condition on these products.

Action Needed

Within 60 months from the effective date of this AD, modify the LH and RH MLG assembly in accordance with paragraph 2.B. of the Accomplishment Instructions of the applicable service bulletin, as specified in paragraphs (k)(1) through (3) of this AD.

(1) For airplanes having S/N 5301 through 5665 inclusive: Bombardier Service Bulletin

604–32–031, Revision 01, dated March 17, 2023.

(2) For airplanes having S/N 5701 through 5988 inclusive: Bombardier Service Bulletin 605–32–008, Revision 01, dated March 17, 2023.

(3) For airplanes having S/N 6050 through 6188 inclusive: Bombardier Service Bulletin

650–32–005, Revision 01, dated March 17, 2023.

Modifying and testing an airplane as required by paragraphs (k) and (l) of this AD terminates the initial and repetitive lubrication and inspections required by paragraphs (g), (h), and (i) of this AD for that airplane.

This paragraph provides credit for actions required by paragraphs (k) and (l) of this AD, if those actions were performed before the effective date of this AD using Bombardier Service Bulletin 604–32–031, dated December 29, 2022; Bombardier Service Bulletin 605–32–008, dated December 29, 2022; or Bombardier Service Bulletin 650–32–005, dated December 29, 2022.

For more information on this change or any other Challenger capabilities,
please contact any of the Challenger Specialists listed below:

Robert Peyman

Robert Peyman

Technical Sales Manager
Challenger & Global
Tel 618.258.8090

Randy Miller

Randy Miller

Technical Sales Manager Challenger & Global
Tel 970.248.5270

Connor Mottice

Connor Mottice

Technician Sales Manager
Office 423.320.6156

Jeff Messmer

Jeff Messmer

Technical Sales Manager
Cell 314.607.4069

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Mark White

RSM, California

Dave Godo

RSM, Ohio Valley

Mark Daniels
Tim Cane
Robbie Johnson

RSM, Mid Atlantic

Santiago Carol

RSM, Latin America

Steve Fleeman

RSM, Landing Gear

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