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Date: Sat, 28 Dec 2013 11:38:18 -0500
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Subject: Re: [LML] Re: Advanced flight systems s-TEC GPSS interface
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From: Douglas Johnson <lancair1@bellsouth.net>
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How do you like the afs autopilot? Does it have altitude preselect and hold?=
 Good lateral and vertical precision? Did you have to switch out all your st=
ec servos and wiring?

Douglas Johnson MD
Sent from my iPad

On Dec 27, 2013, at 7:28 AM, Todd Long <toddlong1@gmail.com> wrote:

> I screwed around for a year with an stec 55x and the afs. Don't waste your=
 time. You will have headaches and be disappointed. Rob will even tell you t=
he stec works with limited functionality and only has had a few partial succ=
esses. It's not a sales ploy. Stec tech support tried to help but have almos=
t zero knowledge of afs equipment.  Also the interface for operation will be=
 a pain. I ended up putting in the afs pilot and should have from the start.=
 Took about 2 days to install.=20
> I had the stec in the plane when I bought it. And tried to make it work wi=
th the afs. FAIL.=20
>=20
> Sent from my iPhone
>=20
>> On Dec 26, 2013, at 16:23, Tom <n20087@yahoo.com> wrote:
>>=20
>> Folks=20
>>=20
>> I am interested in hearing from anyone with experience interfacing an adv=
anced flight systems efis with an Stec autopilot using the st901 GPSS module=
.  I would like to upgrade my panel incrementally and keep the basic autopil=
ot in place.  I believe I could still operate coupled approaches with little=
 or no change to my existing wiring but where things get a little fuzzy is a=
round the heading guidance selection from the efis source.  The af5000 has a=
n Stec selection for auto pilot type.  I am not certain if it is providing t=
he right ARINC tags to the GPSS. Ie ground speed and commanded roll rate.  A=
gain I would love to hear from anybody having experience with this arrangeme=
nt
>>=20
>> Thanks
>>=20
>> Tom
>> --
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>=20
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