North American Network Operators Group

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Re: An Idea

  • From: Bill McGonigle
  • Date: Mon Sep 17 10:07:31 2001

On Saturday, September 15, 2001, at 12:14 AM, Jeffrey C. Ollie wrote:
1) In addition to traditional "black boxes" there would be
transmitters in planes that would transmit flight data to a network of
ground stations that would record the data.  The storage problems
would not be too bad as recordings would be recycled after N days.

4) The transmitters should be designed and installed so that they
would be difficult to disable while a plane is in flight.
Piggy-backing the signal on the in-flight telephone system would fit these criteria. Airfone (GTE?), and probably its competitors, have 130-some ground stations designed for signal coverage over most of the US and neighboring countries/oceans - they switch over to satellite service when out of range of the US infrastructure. The antenna is on the belly of the aircraft. The whole system should be able to run on one channel, squeezing the data portions in around the framing around the voice data.