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=0.2 required=5.0 tests=BAYES_00,INVALID_MSGID, REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,77b3d5e1a20fffd1 X-Google-Attributes: gid103376,public From: "John Apa" Subject: Re: About Ada... Date: 1997/12/18 Message-ID: <67a8a1$aro@mtinsc02.worldnet.att.net>#1/1 X-Deja-AN: 299236971 References: <19971130215101.QAA07721@ladder01.news.aol.com> <677hcg$s04@bgtnsc01.worldnet.att.net> Organization: AT&T WorldNet Services Reply-To: "John Apa" Newsgroups: comp.lang.ada Date: 1997-12-18T00:00:00+00:00 List-Id: I'm sure sorry if I threatened your belief system, but since I work for the company that does the work for most of Boeing's AC I think I can safely make that assertion. The 777, 737, 747-400, V-22, and CH-47 all run on a diet of Ada. New planes ship with Ada, and the retrofit market is mostly Ada also. The guis are c or VAPs. We have hundreds of Ada engineers working on Boeing, and even Airbus, products. So start believing. I'm currently developing under DO-178B (in Ada95 even!), the FAA's new standard for flight software. It's very daunting, but most new software has to be recertified anyway so having it in Ada isn't a big deal. Much of the earlier (pre-84) SW was written in PL/1 and was ported to Ada. No, not the best plan, but that's how we got to where we are. Much of the code has been redesigned since then in Ada. You sound like you're stating that it'd be harder to certify with Ada than anything else, that's just plain false. It also sounds like you're stating that planes are never upgraded to more recent flight management/control systems, wrong again. Airframes are around for quite a while and in this market at least they are upgraded to increase safety and efficiency. Both noble causes. The FAA and world authorities are coming out with new regs for flying and that means better avionics are required to keep everyone safe. Something I strongly believe in when I'm at 30K Feet. You could have checked these facts too, it's certainly not a secret. I posted this information informally to show that Ada is not just a military language. It is being accepted commercially where safety and reliability are critical. Please check your beliefs and repost. John Apa Arthur Evans Jr wrote in article ... > In article <677hcg$s04@bgtnsc01.worldnet.att.net>, > "John Apa" wrote: > > > Ada is used on almost every AC that Boeing delivers, not just the 777. > > Are you sure of this fact? I find it highly unlikely. Many aircraft > Boeing still delivers were developed long before Ada was considered a > practical solution -- or even before Ada existed. As rewriting in Ada > would require new FAA certification, a daunting obstacle, I find it hard > to believe that anyone would have done such an upgrade. > > Please check your facts and repost. > > Art Evans > > Arthur Evans Jr, PhD > Ada Consulting > evans@evans.pgh.pa.us >