On May 31, 2024 the FAA issued an AMOC (Alternate Means of Compliance) based on Bombardier’s request to Transport Canada dated February 2024.

This AMOC was approved by the FAA to push compliance of the AD until June 30, 2028 subject to the following conditions:

1. This approval is applicable only to Bombardier, Inc. airplanes as specified under paragraph (c) of AD 2019-08-08.

2. Operators must order the repair kit referenced in the corresponding Service Bulletin (SB) by October 31, 2024.

3. This Global AMOC expires on June 30, 2028.

4. All provisions of AD 2019-08-08 that are not specifically referenced above remain fully applicable and must be complied with accordingly.

5. This global AMOC is transferable. A transferable global AMOC is a global AMOC that will continue to apply to a product after it has been transferred to a new owner/operator.

6. Before using this global AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office.

7. This global AMOC only applies to the FAA AD listed above. The FAA does not have the authority to approve this as a global AMOC to any AD issued by another civil aviation authority

The FAA released AD 2019-08-08 for CL601/CL604 (and subsequent variants) effective on June 27, 2019 prompted by reports of on-ground hydraulic accumulator screw/end cap failure that resulted in loss of the associated hydraulic system and high-energy impact damage down range of adjacent systems and structure.

The terminating action of this AD is accomplished by c/w SB 601-0637 for CL601 aircraft (s/n 3001 to 3066, 5001 to 5194), or by c/w SB 604-29-013 R2 for CL604 aircraft (s/n 5301 to 5665).

These Service Bulletins remove the existing hydraulic system #3 accumulator and its pressure gauge/valve from the main landing gear bay and relocate them to the LH side, rear wing-to-fuselage fairing area of CL604’s or to the LH side of the aft belly fairing on CL601’s.

Compliance was mandatory within 60 months or 2,400 flight cycles (whichever occurs first) from the AD effective date of June 2019.

If aircraft do not have the LH hydraulic door previously installed, this must be accomplished at the same time as the accumulator relocation but will entail additional parts and labor. Smart Parts Plus does not pay for these kits to accomplish this modification.