FAA Proposes Safety Check for Diamond DA 40 Passenger Doors
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The Federal Aviation Administration is proposing a new rule to address reports of passenger doors separating on Diamond DA 40 airplanes. The proposal follows findings from Transport Canada that some doors came loose because they were not latched correctly or were attempted to be latched while the plane was in flight. If a door separates, it could damage the airplane or injure people on the ground.
Why it matters: This proposal targets a specific mechanical risk that could compromise the integrity of the aircraft or create a hazard on the ground. The FAA considers this an interim action while the manufacturer continues to investigate the root cause, so additional rulemaking may follow depending on the results.
Who it affects
- Owners and operators of Diamond DA 40, DA 40 F, and DA 40 NG airplanes registered in the U.S.
The Federal Aviation Administration published this proposed rule in the Federal Register under Docket No. FAA-2026-4633; check the original document for comment deadlines and full technical details before relying on this summary.
Agency: Transportation Department, Federal Aviation Administration
Source: Federal Register — read the official document