Oxygen - Chemical Oxygen Generators - Replacements
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Boeing 737, 757, and 767 series airplanes must inspect chemical oxygen generator part numbers within 30 days of the directive's effective date and repetitively replace affected units before they exceed 10 years from the date of manufacture. Installation of non-serviceable or affected parts is prohibited. Compliance with these requirements is mandatory by September 5, 2023, with provisions for alternative methods of compliance if justified.
Summary
The Federal Aviation Administration's Airworthiness Directive 2023-13-12 addresses premature aging of certain passenger chemical oxygen generators installed on various Boeing aircraft models including the 737 series (100 through 900ER), 757 series, and 767 series airplanes. This final rule mandates repetitive replacement of affected chemical oxygen generators and restricts installation of certain parts to ensure safety during emergencies. The directive aims to prevent failure of oxygen generators to activate, which could jeopardize occupant safety.
What changed
This new airworthiness directive introduces mandatory repetitive replacement requirements for specific chemical oxygen generators identified as prematurely aging. It also limits the installation of affected parts and clarifies compliance procedures, including inspection timelines and acceptable replacement parts. The directive responds to safety concerns by establishing clear maintenance and replacement protocols for affected Boeing aircraft.
Why it matters
This directive is critical for operators, maintenance organizations, and compliance teams to ensure the reliability of emergency oxygen systems on affected Boeing aircraft. Failure to comply could result in oxygen generators not activating during emergencies, posing serious risks to passenger and crew safety. Timely adherence to replacement and inspection requirements helps maintain airworthiness and regulatory compliance.
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