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NNTP-Posting-Date: Fri, 10 Jan 2020 11:14:00 -0600
From: Dennis Lee Bieber <wlfraed@ix.netcom.com>
Newsgroups: comp.lang.ada
Subject: Re: Curious bug in 737 glass instruments
Date: Fri, 10 Jan 2020 12:14:01 -0500
Organization: IISS Elusive Unicorn
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Xref: reader01.eternal-september.org comp.lang.ada:57815
Date: 2020-01-10T12:14:01-05:00
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On Fri, 10 Jan 2020 17:07:04 +0100, "Alejandro R. Mosteo"
<alejandro@mosteo.com> declaimed the following:

> > The bug affects 737-600, -700, -700C, -800, -900 and -900ER model 
>aircraft, which are running Common Display System Block Point 15 (CDS BP 
>15) software for their display electronic units (DEUs) together with 
>flight management computer (FMC) software version U12 or later.
>
>
>Just wondering if some Ada is be involved...

	Can't speak for the display units -- I think Rockwell makes those. Odd
that all displays blank at the same time... I could understand if the
displays showing the approach view blanked as some artifact of plotting
that heading. But... possibly the data is broadcast to all displays, and
the display mode is selectable via front panel buttons allowing pilots to
reroute displays as needed.

	The FMC is Ada-83. And the control panel unit obviously did not blank
if they could use it to select different runway/heading.


-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
	wlfraed@ix.netcom.com    http://wlfraed.microdiversity.freeddns.org/