EASA AD 26-119
Oxygen – Oxygen Pressure Regulator – Inspection
Summary
EASA Airworthiness Directive Proposal PAD No. 26-119 addresses an inspection requirement for the oxygen pressure regulators installed on ATR 42 and ATR 72 aeroplanes. This directive targets passenger oxygen regulators with Part Number 112054-01, affecting various ATR 42-500 and ATR 72 series models. The directive aims to ensure proper oxygen flow by inspecting and correcting any improperly assembled regulators.
What Changed
This new proposed Airworthiness Directive introduces a mandatory detailed inspection of the affected oxygen pressure regulators due to a quality escape from supplier assembly. It requires operators to inspect the regulators within 6 months or 750 flight hours and to perform corrective actions if any installation issues are found. Additionally, it mandates the use of updated maintenance procedures dated 01 July 2026 or later.
Why It Matters
This directive is critical for aviation professionals because it addresses a potential safety risk where oxygen flow to passengers could be compromised during an emergency. Operators and maintenance organizations must ensure compliance to prevent reduced oxygen availability, which could impact passenger safety. The directive also updates maintenance practices, requiring adherence to revised procedures to avoid recurrence of the issue.
What To Do
Operators of ATR 42-500 and ATR 72 series aeroplanes must perform a detailed inspection of each affected oxygen pressure regulator within 6 months or 750 flight hours after the directive's effective date. If any regulator is found incorrectly installed, corrective actions must be completed before the next flight. Maintenance teams must use the updated ATR maintenance procedure for oxygen pressure regulator installation dated 01 July 2026 or later for all future maintenance.
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