The device consists of a passive imaging part and an evasion action part. The imaging part recognizes the fingerprints of runways, skylines, domes of reactors, dams and other landmarks as The Pentagon, The White House,.... Runways are short straight pavements stream-lined with landing aircraft. The evasive part effects a calculated none-stressful left turn at appropriate distance from intended target and overrides the terrorist attempt to use the plane as a weapon.

How It Works
Unless landing at an airport runway, as an airplane descends towards a target, the device recognizes the target and safely diverts the plane away from it.

How Does The Device Work?
Signs of danger include domes of an atomic reactor, skylines of high rise buildings, wall and body of water of dams and bridges, and SuperIR-3D sensor of landmark fingerprints. The device recognizes runways and allows landings.

Hidden Device On The Plane
The device is encased in a metal box measuring 2"x2"x1/2" and is hidden inside the tips of the wings, nose, and tail. The software is embedded in a chip measuring 1/3"x1/3"x1/16" with four redundancies. The device acts independently for fail-safety or integrates with the plane's avionics, FBW.

The device drives a solenoid that pulls the tail rudder left, over-powering the FBW as well as a would-be saboteur. As the plane descends to 3,000 feet and the hijacked plane fitted with the device approaches within a few miles of a potential ground target, the device automatically diverts the plane away from the target.

A few seconds later, the device is automatically de-activated, returning full control of the plane to the hijacker.

If the maneuver is attempted again by the terrorist, the automatic diversion is repeated. 

Recognizing Danger
The device installation includes recognizable patterns of potential targets like domes of atomic reactors, skylines of high-rise buildings, walls and bodies of water - dams and bridges, and SuperIR-3D DNA-like fingerprints of stadiums, seaports, cities, the White House, the Pentagon, embassies, federal buildings, parliaments...

Recognizing Runways
The all weather passive imager recognizes runways in a straight line with descending-to-land aircraft causing the device to allow safe landing.