Airworthiness directives › 2023-23-02
AD 2023-23-02 Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
Applicability*9
This AD applies to all MHI RJ Aviation ULC (Type Certificate previously held by Bombardier, Inc.) airplanes identified in paragraphs (c)(1) through (6) of this AD, certificated in any category. (1) Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. (2) Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes. (3) Model CL-600-2C11 (Regional Jet Series 550) airplanes. (4) Model CL-600-2D15 (Regional Jet Series 705) airplanes. (5) Model CL-600-2D24 (Regional Jet Series 900) airplanes. (6) Model CL-600-2E25 (Regional Jet Series 1000) airplanes.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
For Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes: Within 60 days after the effective date of this AD, when returning an airplane from long-term storage (storage lasting more than 28 days), do the actions specified in paragraphs (g)(1) through (4) of this AD. Do all applicable corrective actions before further flight. (1) Accomplish an operational test and applicable corrective actions, in accordance with Task 27-21-00-710-805, Operational Test of the Rudder Control System, Subject 27-21-00, Rudder Control System, Chapter 27, Flight Controls, of MHI RJ CRJ200 Aircraft Maintenance Manual, CSP A-001, Revision 66, dated October 10, 2022. (2) Accomplish an operational test and applicable corrective actions, in accordance with Task 27-31-00-710-803, Operational Test of the Elevator Control System, Subject 27-31-00, Elevator Control System, Chapter 27, Flight Controls, of MHI RJ CRJ200 Aircraft Maintenance Manual, CSP A-001, Revision 66, dated October 10, 2022. (3) Accomplish a detailed inspection and applicable corrective actions, in accordance with Task 27-23-01-220-801, Detailed Inspection of the Rudder PCU Rod End Spherical Ball, Subject 27-23-01, Power Control Unit (PCU), Rudder, Chapter 27, Flight Controls, of MHI RJ CRJ200 Aircraft Maintenance Manual, CSP A-001, Revision 66, dated October 10, 2022. (4) Accomplish a detailed inspection and applicable corrective actions in accordance with Task 27-33-01-220-801, Detailed Inspection of the Elevator PCU Rod End Spherical Ball, Subject 27-33-01, Power Control Unit (PCU), Elevator, Chapter 27, Flight Controls, of MHI RJ CRJ200 Aircraft Maintenance Manual, CSP A-001, Revision 66, dated October 10, 2022.
Unsafe condition
This AD was prompted by reports of power control unit (PCU) rod end fractures due to pitting corrosion and a determination that new or more restrictive airworthiness limitations are necessary. The FAA is issuing this AD to address fractured PCU rod ends. This condition, if not addressed, could lead to a disconnect between the PCU and the elevator or rudder control surface, resulting in potential loss of the control surface function or inadequate flutter suppression.
Affected ADs
None.
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