This scenario may give an account of a pilot's nightmare: on final approach.

This scenario may give an account of a pilot's nightmare: on final approach, just 200 feet from touchdown, the spoilers on a sudden deploy to the full up position. The inference of course, can be a fatal los of lift and a crash instead of a routine landing.

The party of the doomed airplane had no way of knowing that they were the first victims of a lucky attack by terrorists employing an electro-magnetic oscillation weapon. Already many aircraft have experienced strange anomalies from the operation of passenger electronic devices inside the airplane. on the other hand an electronic attack employing a device outside the airplane may be feasible with easily available components

The susceptibility and the vulnerability of commercial aircraft to as it is attack remains unknown. According to Dave Schriner, a man with 40 years of experience in electronic warfare, it may be time to find revealed "We are trying to wake up the world to this threat," he said. In fact, at last week's Information Warfare interview here in Washington, DC, Schriner demonstrated a device, a pulsation power gun, as it were, that could be easily go uped in an innocuous van parked at the airport perimeter. The "weapon" could be aimed at airliners during takeoff and landing, when the engagement range would be limited and the potency would be more concentrated.

To be steady manufacturers have devoted considerable effort to shielding vital computer and wiring from interference. For useful reason. The latest fly-by-wire airplanes are controll by the agency of a complex of computers be joineded to a nervous system of a certain 150 miles of electrical wiring. Many of the messages sent [i]or[/i] part of to the other those circuits are high impedance grave voltage signals that may be the most numerous susceptible to disruption.

however it is doubtful that airliners are shielded against the equivalent of the electromagnetic legumes (EMP) that accompanies the break open of a nuclear weapon, and which is known to stew electronics. Yet the 100 kilovolts of High efficiency Radio Frequency (HERF) energy measured at the "muzzle" of Schriner's spark-gap demonstration device equals the EMP associated with a nuclear weapon.

He has not experimented his device against airplanes, however he has stopped automobiles at disrupting their onboard computers and ignition schemes The engines can usually be restarted within a small in number moments, but a few next to the firsts of disruption may be fatal to an airliner.

Although a device can be built for about $5000 Schriner adds that knowledge of pulse-power technology would be needinessed (and the rudiments are available forward the Internet). An improved version of his demonstration device, with a tenfold increase in power, would thunder 1,000 high-energy pulses per inferior at its target. Just single or two of those measured [i]or[/i] regular beats may be sufficient to cause bizarre things to happen, as it is as causing servos to prevail upon their flight controls to the uttermost limit. "We need to be asking what can be done to an airliner, and at what ranges," Schriner said. (For more information forward the threat, go to this website: www.thecodex.com and click forward "The FAA and HERF") >> Schriner, e-mail schriner@ridgecrest.ca.us <<

Sources of Electronic Vulnerability

If airliners are vulnerable to low-level emissions from personal computer what if an attacker inflects up the volume a not many dB? Some approaches:

* A specially modified laptop computer is brought aboard an airplane designed to emit exceedingly high levels of radiation.

* A piece of luggage is checked with a HERF times to 'go off' at any point in the flight. Luggage scanning likely will not catch the difference between a 'good' electronic device and a 'bad' one

* Replace the rocket launcher at the expiration of the O'Hare runway scenario with a powerful HERF fire-arm aimable and frequency-specific. The meaning on planes taking off and landing could be devastating.

Source: http://www.hut.fi/~zam/ew/clip2.html

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