Re: 757 flight recorder located

From: (Mark Krotz)
Organization: Evergreen Communications, Phoenix, Arizona
Date:         14 Mar 96 17:49:32 
References:   1 2 3
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In article <airliners.1996.303@ohare.Chicago.COM>,

>To carry the thought a step further (and perhaps to extremes), does current
>technology make it feasible for airliners to transmit their operating
>parameters to the ground in real time?
Not only is it feasible, it is actually in use.  Its called ACARS (aircraft
calling and reporting system).  It can provide automatic transmission from
air-to-ground of OUT-OFF-ON-IN times, flight number, crew identification,
fuel load, passenger count, data such as engine performance, position,
maintenance reports.  Also, it can include air-to-ground and ground-to-air
selective calling.  A lot of the information is provided automatically by
sensors, and it is sent in digital data clusters over VHF frequencies.