Doors - Cargo Door Control Switches - Replacement / Installation
- Published
- Effective
- Deadline
- Replaces
- 2013-01-02
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must replace the specified cargo door control switches with the improved versions and install arm switches where required by November 7, 2018. They must also perform operational and functional tests and carry out any necessary on-condition actions. Compliance with the updated Boeing Special Attention Service Bulletins is mandatory, and alternative compliance times may be requested with sufficient justification.
Summary
Airworthiness Directive 2018-19-23 is a final rule issued by the Federal Aviation Administration addressing certain Boeing 747 and 757 series airplanes. It mandates replacement of specific cargo door control switches with improved versions, installation of an arm switch on certain cargo doors, and requires operational and functional testing. This directive aims to prevent uncommanded cargo door operations that could cause injury or damage.
What changed
This directive supersedes AD 2013-01-02 by expanding the applicability to additional Boeing 747 and 757 models and requiring new, improved cargo door control switches and arm switch installations. It also updates service bulletin references to the latest revisions and removes some previously proposed provisions. The compliance times and inspection requirements have been revised based on new risk assessments.
Why it matters
This AD addresses a critical safety issue involving uncommanded cargo door movements, which pose risks to personnel and aircraft integrity. Operators, maintenance organizations, and compliance teams must ensure timely replacement and testing of cargo door control switches to maintain airworthiness and regulatory compliance. Failure to comply could result in unsafe conditions and potential operational disruptions.
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