From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM
	autolearn=unavailable autolearn_force=no version=3.4.4
X-Received: by 2002:a5d:954c:: with SMTP id a12mr2374664ios.31.1555055192001;
        Fri, 12 Apr 2019 00:46:32 -0700 (PDT)
X-Received: by 2002:a05:6830:1342:: with SMTP id
 r2mr37002563otq.105.1555055191841;
 Fri, 12 Apr 2019 00:46:31 -0700 (PDT)
Path: 
 eternal-september.org!reader01.eternal-september.org!feeder.eternal-september.org!news.gegeweb.eu!gegeweb.org!usenet-fr.net!proxad.net!feeder1-2.proxad.net!209.85.166.215.MISMATCH!b2no72730itd.0!news-out.google.com!w17ni112itb.0!nntp.google.com!b2no72725itd.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
Newsgroups: comp.lang.ada
Date: Fri, 12 Apr 2019 00:46:31 -0700 (PDT)
In-Reply-To: <8736mwi257.fsf@nightsong.com>
Complaints-To: groups-abuse@google.com
Injection-Info: glegroupsg2000goo.googlegroups.com;
 posting-host=125.234.20.170;
 posting-account=swBhQwoAAAASyh-mRsC176VDTWaaVHF2
NNTP-Posting-Host: 125.234.20.170
References: <8736mwi257.fsf@nightsong.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <2590d3d8-5f91-4f59-897e-e0c9b7e1b5ca@googlegroups.com>
Subject: Re: Boeing 737 and 737 MAX software
From: tranngocduong@gmail.com
Injection-Date: Fri, 12 Apr 2019 07:46:31 +0000
Content-Type: text/plain; charset="UTF-8"
Xref: reader01.eternal-september.org comp.lang.ada:56120
Date: 2019-04-12T00:46:31-07:00
List-Id: <comp.lang.ada>

On Saturday, April 6, 2019 at 4:16:22 AM UTC+7, Paul Rubin wrote:
> Does anyone know anything about this?  It has been under some criticism
> lately.
> 
> I have heard that the 777 software was almost entirely in Ada.  It also
> sounds as if Boeing's software operation may have slipped in recent
> years, not good news for the 737 MAX.

I know nothing about the software. But I don't think it is written in Ada. If it was, programmers must have chosen a wrong subtype.

In the crashed Ethiopian 302 aircraft, ~30 seconds before impact, the nose points 40 deg. toward ground, and the AoA indicates 75 deg. As 40 + 75 = 115 > 90 deg., this would imply negative airspeed.