A cockpit door comprises a hinge 20 provided to one surface and a latch device provided to the other side that can be operated only from the cockpit side. To the inside of a door panel is disposed a reinforcement member 110 formed by laminating multiple layers of sheets with thermoplastic adhesives, the sheets formed by laminating aromatic polyamide fiber onto a honeycomb panel and processing the same into sheet form. A titanium alloy reinforcement plate 400 is disposed to cover the gap G1 between the door body and flap 60. Mounting portions 150 and 160 are provided to the rim of the reinforcement member body 110, and rivet holes 180 are provided thereto. The mounting portion is bent 90 degrees and fixed to the frame by rivets.

 
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