![birdclump :) on X: "cannot stop thinking about the D.B. Cooper device, a mechanical part invented in 1972 for the sole purpose of thwarting D.B. Cooper https://t.co/vATyTOy6Dq" / X birdclump :) on X: "cannot stop thinking about the D.B. Cooper device, a mechanical part invented in 1972 for the sole purpose of thwarting D.B. Cooper https://t.co/vATyTOy6Dq" / X](https://pbs.twimg.com/media/GDOmXIhaEAAevu-.jpg)
birdclump :) on X: "cannot stop thinking about the D.B. Cooper device, a mechanical part invented in 1972 for the sole purpose of thwarting D.B. Cooper https://t.co/vATyTOy6Dq" / X
![TIL about the Cooper vane, named after DB Cooper, which is a paddle fixed to the outside of aft staircases on Boeing 727-100s that must be removed from the outside of the TIL about the Cooper vane, named after DB Cooper, which is a paddle fixed to the outside of aft staircases on Boeing 727-100s that must be removed from the outside of the](https://external-preview.redd.it/bH_ipYbnwYGgNFqAaRrIupnpImJU-Lah7dpSSBnLpZs.jpg?auto=webp&s=63d7cee6e370cda34cbf1bd59fcff2983de82042)
TIL about the Cooper vane, named after DB Cooper, which is a paddle fixed to the outside of aft staircases on Boeing 727-100s that must be removed from the outside of the
![Air Safety #OTD by Francisco Cunha on X: "#thread As “DB Cooper” (and at least 1 more copycat heist) jumped from the B-727´s rear airstairs, a device was installed to prevent similar Air Safety #OTD by Francisco Cunha on X: "#thread As “DB Cooper” (and at least 1 more copycat heist) jumped from the B-727´s rear airstairs, a device was installed to prevent similar](https://pbs.twimg.com/media/F_sQD4CWoAAwvQy.jpg)
Air Safety #OTD by Francisco Cunha on X: "#thread As “DB Cooper” (and at least 1 more copycat heist) jumped from the B-727´s rear airstairs, a device was installed to prevent similar
![What is the Cooper Vane? The secret tool designed to stop a plane hijacking | Travel News | Travel | Express.co.uk What is the Cooper Vane? The secret tool designed to stop a plane hijacking | Travel News | Travel | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/25/590x/plane-hijacking-DB-Cooper-Vane-flight-secrets-866036.jpg?r=1686998680160)
What is the Cooper Vane? The secret tool designed to stop a plane hijacking | Travel News | Travel | Express.co.uk
![Air Safety #OTD by Francisco Cunha on X: "#thread As “DB Cooper” (and at least 1 more copycat heist) jumped from the B-727´s rear airstairs, a device was installed to prevent similar Air Safety #OTD by Francisco Cunha on X: "#thread As “DB Cooper” (and at least 1 more copycat heist) jumped from the B-727´s rear airstairs, a device was installed to prevent similar](https://pbs.twimg.com/media/F_vjYSIWoAAkUb2.png)