If Boeing does make a coupled cabin/flight control system initially
'foolproof', there always seems to be some unanticipated vulnerability a
bright, driven hacker could exploit. Also, software and hardware is
periodically fixed and improved. It is the nature of such complex systems
that later generations of developers will not completely understand the
built-in safeguards and may make the system more vulnerable.
Not allowing data to flow between the two systems is the safe way to avoid
later problems.

--
Best Regards,
Mike

http://photoshow.comcast.net/mikenoel


"Phil J" wrote in message
...
On Jan 6, 6:54 am, Bob Noel
wrote:


Notice that the Special Condition published in the 13 April 2007 Federal
Register (and later on 2 Jan 2008) adds the following requirement
for the 787 Type Certificate:

"The design shall prevent all inadvertent or malicious changes
to, and all adverse impacts upon, all systems, networks, hardware,
software, and data in the Aircraft Control Domain and in the Airline
Information Domain from all points within the Passenger Information
and Entertainment Domain."

If complied with, why complain?

Bob Noel

If they can safely accomplish this, that's great. I hope they do.
But just because the FAA writes a regulation saying it should be
foolproof, that doesn't mean it will be.

Phil