EASA AD CF-2023-75
Oxygen — Crew Oxygen System — Oxygen Fitting Production Installation Deficiency
Canadian Airworthiness Directive CF-2023-75 addresses a production installation deficiency in the crew oxygen system fittings on MHI RJ Aviation ULC model CL-600-2D15 and CL-600-2D24 aircraft, serial numbers 15476 through 15499. The directive mandates replacement of certain oxygen line bulkhead fittings and fitting adapters due to over-torque installation during production. This ensures the integrity of the oxygen system and prevents potential oxygen leakage affecting flight crew safety.