Aeroplane Flight Manual — Amendment; Oxygen — Crew Oxygen System / O2 Saver Function — Deactivation
- Published
- Effective
- Deadline
- Replaces
- 2021-0202R1
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Falcon 7X and Falcon 8X aeroplanes with affected SAFRAN oxygen masks must amend the Aeroplane Flight Manual before the next flight after 13 September 2021 and mechanically deactivate the oxygen saver function within three months of 20 December 2021. Installation of affected parts is only allowed if the oxygen saver function is deactivated and the AFM is updated accordingly.
Summary
EASA Airworthiness Directive 2021-0272 is an amendment addressing the oxygen crew system on Dassault Aviation Falcon 7X aeroplanes, including those modified to Falcon 8X standard. It targets specific SAFRAN crew oxygen masks with part number MLD40-45-005 that have manufacturing defects affecting the oxygen saver function. The directive mandates changes to the Aeroplane Flight Manual and mechanical deactivation of the oxygen saver function to ensure safe oxygen supply to flight crew.
What changed
This directive supersedes EASA AD 2021-0202R1 and requires physical deactivation of the oxygen saver function on affected SAFRAN crew oxygen masks. It introduces installation restrictions for these parts and mandates amendments to the applicable Aeroplane Flight Manual to incorporate specific change projects. The update moves beyond previous procedural mitigations to a mechanical solution for long-term safety.
Why it matters
The oxygen saver function defect could cause blocked or erratic oxygen supply during decompression or cockpit smoke/fire emergencies, posing a serious safety risk. Operators and maintenance organizations must comply to maintain airworthiness and ensure crew safety. Compliance with this AD is essential to avoid operational restrictions and regulatory non-compliance.
More for Dassault Falcon 7X
All 42- EASA AD 2026-0171Time Limits / Maintenance Checks – Airworthiness Limitations Section – AmendmentSep 4, 2026
- EASA AD 2026-0145R1Flight Controls – Maintenance and Avionics Interface Computer Software – ModificationAug 11, 2026
- EASA AD 2026-0145Flight Controls – Maintenance and Avionics Interface Computer Software – Modification; Airplane Flight Manual – AmendmentJul 23, 2026
- EASA PAD 26-076Flight Controls – Maintenance and Avionics Interface Computer Software – Modification; Airplane Flight Manual – AmendmentJun 18, 2026
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